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Jamie Warner

Professor Jamie Warner
Professor of Materials
Royal Society University Research Fellow

Department of Materials
University of Oxford
16 Parks Road
Oxford OX1 3PH
UK

Tel: +44 1865 273790 (Room 195.20.03)
Tel: +44 1865 273777 (reception)
Fax: +44 1865 273789 (general fax)

Nanostructured Materials Group

Summary of Interests

Professor Jamie Warner's group is based in the Department of Materials and studies the next generation of nanostructured materials with unique properties that will impact electronic, opto-electronic, and energy applications. Particular focus is made to the atomic level structure and dynamics of nanomaterials probed by aberration-corrected transmission electron microscopy and spectroscopy. A wide range of nanoscale characterization tools (TEM, SEM, AFM, FIB) are used to probe materials across all dimension scales. New types of nanoscale devices are produced in clean-room nanofabrication facilities, utilizing materials ranging from 2D Crystals (graphene, BN, MoS2, WS2 etc), 1D wires and nanotubes, to 0D quantum dots. The group is multi-disciplinary and collaborates extensively with a wide range of scientists within Oxford, UK, USA, and internationally.

Research Publications

  1. G. Ryu, A. France-Lanord, Y. Wen, S. Zhou, J. C. Grossman, J. H. Warner, Atomic Structure and Dynamics of Self-Limiting Sub-Nanometer Pores in Monolayer WS2, ACS Nano, Articles ASAP (2018) DOI: 10.1021/acsnano.8b07051

 

  1. M. Tweedie, Y. Sheng, G. S. Sarwat, W. Xu, H. Bhaskaran, J. H. Warner, Inhomogeneous Strain Release during Bending of WS2, on Flexible Substrates, ACS Applied Materials and Interfaces, Accepted in press (2018)

 

  1. S. Sinha, Y. Sheng, I. Griffiths, N. P. Young, S. Zhou, A. I. Kirkland, K. Porfyrakis, J. H. Warner, In-situ Atomic Level Studies of Gd Atom Release and Migration on Graphene from a Metallofullerene Precursor, ACS Nano, 12, 10439-10451 (2018)

 

  1. H. Huang, W. Xu, T. Chen, R-J. Chang, Y. Sheng, Q. Zhang, L. Hou, J. H. Warner, High Performance 2D Schottky Diodes Utilizing Chemical Vapour Deposition Grown Graphene-MoS2 Heterojunctions, ACS Applied Materials and Interfaces, Articles ASAP, (2018) DOI: 10.1021/acsami.8b13507

 

  1. B. Song, Z. Ding, C. S. Allen, H. Sawada, F. Zhang, X. Pan, J. H. Warner, A. I. Kirkland, P. Wang, Hollow Electron Ptychographic Diffractive Imaging, Physical Review Letters, 121, 146101, (2018)

 

  1. P. Kidambi, G. D. Nguyen, S. Zhang, Q. Chen, J. Kong, J. H. Warner, A-P, Li, R. Karnik, Facile Fabrication of Large-Area Atomically Thin Membranes by Direct Synthesis of Graphene with Nanoscale Porosity, Advanced Materials, 1804977 (2018)

 

  1. G. G. D Han, B. D. Smith, W. Xu, J. H Warner, J. C Grossman, Nanoporous Silicon-Assisted Patterning of Monolayer MoS2 with Thermally Controlled Porosity: A Scalable Method for Diverse Applications, ACS Applied Nano Materials, 1, 3548–3556 (2018)

 

  1. P. Puczkarski, Q. Wu, H. Sadeghi, S. Hou, A. Karimi, Y. Sheng, J. H. Warner, C. J. Lambert, G. A. D. Briggs, J. A. Mol, Low-Frequency Noise in Graphene Tunnel Junctions, ACS Nano, 12, 9451-9460, (2018)

 

  1. Q. Chen, H. Li, S. Zhou, W. Xu, J. Chen, H. Sawada, C. S. Allen, A. I. Kirkland, J. C. Grossman, J. H. Warner, Ultralong 1D Vacancy Channels for Rapid Atomic Migration during 2D Void Formation in Monolayer MoS2, ACS Nano, 12, 7721-7730 (2018)

 

  1. S. Zhou, S. Wang, Z. Shi, H. Sawada, A. I. Kirkland, J. Li, J. H. Warner, Atomically Sharp Interlayer Stacking Shifts at Anti-phase Grain Boundaries in Overlapping MoS2 Secondary Layers, Nanoscale, 10, 16692-16702 (2018)

 

  1. X. Wang, Y. Sheng, R-J. Chang, J-K. Lee, Y. Zhou, S. Li, T. Chen, H. Huang, B. Porter, H. Bhaskaran, J. H. Warner, Chemical Vapour Deposition Growth of 2D Monolayer Gallium Sulfide Crystals Using Hydrogen Reduction of Ga2S3, ACS Omega, 3, 7897–7903 (2018)

 

  1. S. Wang, A. W. Robertson, J. H. Warner, Atomic Structure of Defects and Dopants in 2D Layered Transition Metal Dichalcogenides, Chemical Society Reviews, 47, 6764-6794 (2018)

 

  1. N. Goodfriend, S. Y. Heng, O. Nerushev, A. Gromov, A. Bulgakov, M. Okada, R. Kitaura, J. Warner, H. Shinohara, E. Campbell, Blister Based Laser Induced Forward Transfer: A Non-Contact, Dry Laser-Based Transfer Method for Nanomaterials, Nanotechnology, 29, 385301 (2018)

 

  1. S. Wang, H. Sawada, X. Han, S. Zhou, S. Li, Z. X. Guo, A. I. Kirkland, J. H. Warner, Preferential Pt Nanocluster Seeding at Grain Boundary Dislocations in Polycrystalline Monolayer MoS2, ACS Nano 12, 5626–5636 (2018)

 

  1. A. Abdelhafiz, A. Vitale, P. Buntin, B. Deglee, C. Joiner, A. Robertson, E. M. Vogel, J. H. Warner, F. M. Alamgir, Epitaxial and Atomically Thin Graphene-Metal Hybrid Catalyst Films: The Dual Role of Graphene as the Support and the Chemically-Transparent Protective Cap. Energy and Environmental Science, 11, 1610-1616, (2018).

 

  1. Y. Zhou, H. Tan, Y. Sheng, Y. Fan, W. Xu, J. H. Warner, Utilizing Interlayer Excitons in Bilayer WS2 for Increased Photovoltaic Response in Ultrathin Graphene Vertical Cross-Bar Photodetecting Tunneling Transistors, ACS Nano, 12, 4669-4677, (2018)

 

  1. R-J. Chang, H. Tan, X. Wang, B. Porter, T. Chen, Y. Sheng, Y. Zhou, H. Huang, H. Bhaskaran, J. H. Warner, High Performance All-2D Layered Tin Disulfide:Graphene Photodetecting Transistors with Thickness Controlled Interface Dynamics, ACS Applied Materials and Interfaces, 10, 13002-13010, (2018)

 

  1. G. S. Jung, S. Wang, Z. Qin, F. J. Martin-Martinez, J. H. Warner, M. J. Buehler, Interlocking Friction Governs the Mechanical Fracture of Bilayer MoS2, ACS Nano, 12, 3600-3608, (2018)

 

  1. G. S. Sarwat, M. Tweedie, B. Porter, Y. Zhou, Y. Sheng, J. Mol, J. H. Warner, H. Bhaskaran, Revealing Strain Induced Effects in Ultrathin Heterostructures at the Nanoscale, Nano Letters, 18, 247-2474, (2018)

 

  1. W. Xu, D. Kozawa, Y. Liu, Y. Sheng, V. B. Koman, S. Wang, X. Wang, T. Jiang, M. S. Strano, J. H. Warner, Determining the Optimized Interlayer Separation Distance in Vertically Stacked 2D WS2:hBN:MoS2 Heterostructures for Exciton Energy Transfer, Small, 14, 1703727, (2018)

 

  1. W. Xu, S. Li, S. Zhou, J-K. Lee, S. Wang, S. G. Sarwat, X. Wang, H. Bhaskaran, M. Pasta, J. H. Warner, Large Dendritic Monolayer MoS2 Grown by Atmospheric Pressure Chemical Vapour Deposition for Electrocatalysis. ACS Applied Materials and Interfaces, 10, 4630–4639 (2018)

 

  1. T. Chen, Y. Zhou, Y. Sheng, X. Wang, S. Zhou, J. H. Warner, Hydrogen Assisted Growth of Large Area Continuous Films of MoS2 on Monolayer Graphene, ACS Applied Materials and Interfaces, 10, 7304–7314 (2018)

 

  1. J. G. Swallow, J. Lee, T. Defferriere, G. M. Hughes, S. N. Raja, H. L. Tuller, J. H. Warner, K. J. Van Vliet, Atomic Resolution Imaging of Nanoscale Chemical Expansion in PrxCe1-xO2-d During In-situ Heating, ACS Nano 12, 1359–1372 (2018)

 

2017

  1. H. Tan, W. Xu, Y. Sheng, Y. Fan, Q. Chen, M. Tweedie, X. Wang, Y. Zhou, J. H. Warner, Lateral Graphene Contacted Vertically Stacked WS2/MoS2 Hybrid Photodetectors with Large Gain, Advanced Materials, 29, 1702917, (2017)

 

  1. G. G. D. Han, K-H. Tu, F. Niroui, W. Xu, S. Zhou, X. Wang, V. Bulovic, C. A. Ross, J. H. Warner, J. C. Grossman, Photoluminescent Arrays of Nanopatterned Monolayer MoS2, Advanced Functional Materials, 27, 1703688, (2017)

 

  1. Y. Fan, A. W. Robertson, Y. Zhou, Q. Chen, X. Zhang, N. D. Browning, H. Zheng, M. H. Rummeli, J. H. Warner, Electrical Breakdown of Suspended Mono- and Few Layer Tungsten Disulfide via Sulfur Depletion Identified by in-situ Atomic Imaging, ACS Nano, 11, 9435-9444, (2017)

 

  1. P. Gehrig, A. Harzheim, J. Spiece, Y. Sheng, G. Rogers, C. Evangeli, A. Mishra, B. Robinson, K. Porfyrakis, J. H. Warner, O. Kolosov, G. A. D. Briggs, J. A. Mol, Field-Effect Control of Graphene-Fullerene Thermoelectric Nanodevices, Nano Letters, 17, 7055-7061, (2017)

 

  1. S. Wang, H. Sawada, C. S. Allen, A. I. Kirkland, J. H. Warner, Orientation Dependent Interlayer Stacking Structure in Bilayer MoS2 Domains, Nanoscale, 9, 13060-13068, (2017)

 

  1. L-G. Chen, J. Warner, A. I. Kirkland, F-R. Chen, D. Van Dyck, Snapshot 3D Electron Imaging of Structural Dynamics, Scientific Reports, 10839, (2017)

 

  1. C. Gong, S. Lee, S. Hong, E. Yoon, G-D. Lee, J. H. Warner, Point Defects in Turbostratic Stacked Bilayer Graphene, Nanoscale, 9, 13725-13730, (2017)

 

  1. S. Wang, H. Sawada, Q. Chen, G. G. D. Han, C. S. Allen, A. I. Kirkland, J. H. Warner, In Situ Atomic Scale Studies of the Formation of Epitaxial Pt Nanocrystals on Monolayer Molybdenum Disulfide, ACS Nano, 11, 9057-9067, (2017)

 

  1. Q. Chen, H. Li, W. Xu, S. Wang, H. Sawada, C. S. Allen, A. I. Kirkland, J. C. Grossman, J. H. Warner, Atomically Flat Zigzag Edges in Monolayer MoS2 by Thermal Annealing, Nano Letters, 17, 5502-5507, (2017)

 

  1. R-J. Chang, X. Wang, S. Wang, Y. Sheng, B. Porter, H. Bhaskaran, J. H. Warner, Growth of Large Single Crystalline Monolayer Hexagonal Boron Nitride by Oxide-Assisted Chemical Vapour Deposition, Chemistry of Materials, 29, 6252-6260, (2017)

 

  1. P. Gehring, J. K. Sowa, J. Cremers, Q. Wu, H. Sadeghu, Y. Sheng, J. H. Warner, C. J. Lambert, G. A. D. Briggs, J. A. Mol, Distinguishing Lead and Molecule States in Graphene-Based Single Electron Transistors, ACS Nano, 11, 5325- 5331 (2017)

 

  1. S. Zhou, S. Wang, H. Li, Huashan; W. Xu, C. Gong, J. C. Grossman, J. H. Warner, Atomic Structure and Dynamics of Defects in 2D MoS2 Bilayers, ACS Omega, 2, 3315-3324 (2017)

 

  1. K. Agrawal, J. Benck, Z. Yuan, R. Misra, A. Govind Rajan, Y. Eatmon, S. Kale, X. Chu, D. Li, C. Gong, J. H. Warner, Q. H. Wang, D. Blankschtein, M. Strano, Fabrication, Pressure Testing and Nanopore Formation of Single Layer Graphene Membranes. Journal of Physical Chemistry C. 121, 14312-14321, (2017)

 

  1. H. Sawada, C. S. Allen, S. Wang, J. H. Warner, A. I. Kirkland, Aberration Measurement in the Probe-Forming System of an Electron Microscope using Two-Dimensional Materials, Ultramicroscopy, 182, 195-204, (2017)

 

  1. S. Wang, H. Li, J. Zhang, S. Guo, W. Xu, J. C. Grossman, J. H. Warner, Epitaxial Templating of Two-Dimensional Metal Chloride Nanocrystals on Monolayer Molybdenum Disulfide, ACS Nano, 11, 6404-6415 (2017)

 

  1. Y. Sheng, H. Tan, X. Wang, J. H. Warner, Hydrogen Addition for Centimeter-Sized Monolayer Tungsten Disulfide Continuous Films by Ambient Pressure Chemical Vapour Deposition, Chemistry of Materials, 29, 4904-4911, (2017)

 

  1. B. Siritanaratkul, C. F. Megarity, T. G. Roberts, T. O. M. Samuels, M. Winkler, J. H. Warner, T. Happe, F. A. Armstrong, Transfer of Photosynthetic NADP+/NADPH Recycling Activity to a Porous Metal Oxide for Highly Specific Electrochemically-Driven Organic Synthesis, Chemical Science, 8, 4579-4586 (2017)

 

  1. T. O. M. Samuels, A. W. Robertson, H. Kim, M. Pasta, J. H. Warner, Three Dimensional Hybrid Multi-Layered Graphene-CNT Catalyst Supports via Rapid Thermal Annealing of Nickel Acetate, Journal of Materials Chemistry A, 5, 10457-10469 (2017)

 

  1. G. S Sarwat, P. Gehring, G. R. Hernandez, J. H. Warner, G. A. D. Briggs, J. Mol, H. Bhaskaran, Scaling Limits of Graphene Nanoelectrodes, Nano Letters, 17, 3688-3693 (2017)

 

  1. Y. Sheng, X. Wang, K. Fujisawa, S. Ying, A. L. Elias, Z. Lim, W. Xu, Y. Zhou, A. M. Korsunsky, H. Bhaskaran, M. Terrones, J. H. Warner, Photoluminescence Segmentation within Individual Hexagonal Monolayer Tungsten Disulfide Domains Grown by Chemical Vapour Deposition, Applied Materials and Interfaces, 9, 15005-15014 (2017)

 

  1. S. Wang, H. Li, H. Sawada, C. S. Allen, A. I. Kirkland, J. C. Grossman, J. H. Warner, Atomic Structure and Formation Mechanism of Sub-Nanometer Pores in 2D Monolayer MoS2, Nanoscale, 9, 6417-6426, (2017)

 

  1. H. Li, S. Wang, H. Sawada, G. G. D. Han, T. Samuels, C. Allen, A. I. Kirkland, J. C. Grossman, J. H. Warner, Atomic Structure and Dynamics of Single Pt Atom Interactions with Monolayer MoS2, ACS Nano, 11, 3392-3403, (2017)

 

  1. S. Li, S. Wang, M. Salamone, A. W. Robertson, S. Nayak, H. Kim, E. Tsang, M. Pasta, J. H. Warner, Edge Enriched 2D MoS2 Thin Films Grown by Chemical Vapor Deposition for Enhanced Catalytic Performance, ACS Catalysis, 7, 877-886 (2017)

 

  1. S. Lee, D. Kim, A. W. Robertson, E. Yoon, S. Hong, J. Ihm, J. Yu, J. H. Warner, G-D. Lee, Graphene as a flexible template for controlling magnetic interactions between metal atoms, Journal of Physics: Condensed Matter. 29, 085001 (2017)

 

  1. G. Liu, A. W. Robertson, M. M-J Li, W. C. H. Kuo, M. T. Darby, M. H. Muhieddine, Y-C Lin, K. Suenaga, M. Stamatakis, J. H. Warner, S. C. E. Tsang, MoS2 monolayer catalyst doped with isolated Co atoms for the hydro-deoxygenation reaction

          Nature Chemistry, 9, 810-816, (2017)

 

  1. L. Flatten, D. Coles, Z. He, D. Lidzey, R. Taylor, J. H. Warner, J Smith, Electrically tunable organic-inorganic hybrid polaritons with monolayer WS2 Nature Communications, 14097 (2017)

 

2016

  1. Y. Fan, A. Robertson, X-W. Zhang, M. Tweedie, Y. Zhou, M. Rummeli, H. Zheng, J. H. Warner, Negative Electro-Conductance in Suspended 2D WS2 Nanoscale Devices, ACS Applied Materials and Interfaces, 8, 32963-32970 (2016)

 

  1. A. W. Robertson, Y-C. Lin, S. Wang, H. Sawada, C. S. AllenQ. Chen, S. LeeG-D. LeeJ. LeeS. HanE. YoonA. I. KirklandH. Kim, K. Suenaga, J. H. Warner, Atomic Structure and Spectroscopy of Single Metal (Cr, V) Substitutional Dopants in Monolayer MoS2 ACS Nano, 10, 10227–10236, (2016)

 

  1. Q. ChenK. He, A. W. RobertsonA. I. Kirkland, J. H. Warner, Atomic Structure and Dynamics of Epitaxial 2D Crystalline Gold on Graphene at Elevated Temperatures, ACS Nano, 10, 10418–10427 (2016)

 

  1. X. Wang, T. N. Hooper, A. Kumar, I. K. Priest, Y. Sheng, T. O. M. Samuels, S. Wang, A. W. Robertson, M. Pacios, H. Bhaskaran, A. S. Weller, J. H. Warner. Oligomeric Aminoborane Precursors for the Chemical Vapour Deposition Growth of Few-Layer Hexagonal Boron Nitride, CrystEngComm. 19, 285-294 (2017)

 

  1. N. Ares, T. Pei, A. Mavalankar, M. Mergenthaler, J. H. Warner, G. A. D. Briggs, E. A. Laird, Resonant Optomechanics with a Vibrating Carbon Nanotube and a Radio-Frequency Cavity. Physical Review Letters, 117, 170801 (2016)

 

  1. T. Pei, A. Palyi, M. Mergenthaler, N. Ares, A. Mavalankar, J. H. Warner, G. A. D. Briggs, E. A. Laird, Hyperfine and Spin-Orbit Coupling Effects on Decay of Spin-Valley States in A Carbon Nanotube. Physical Review Letters. 118, 177701, (2017)

 

  1. M. M-J. Li, P. Mills, S. Fairclough, A. Robertson, Y-K. Peng, J. H. Warner, C. Nie, E. Flahaut, S. C. E. Tsang, Importance of Structural Integrity of Carbon Conjugted Mediator for Photocatalytic Hydrogen Generation from Water over CdS-Carbon Nanotube-MoS2 Composite. Chemical Communications, 52, 13596-13599 (2016)

 

  1. C. Gong, K. He, Q. Chen, A. W. Robertson, J. H. Warner, In Situ High Temperature Atomic Level Studies of Large Closed Grain Boundary Loops in Graphene, ACS Nano, 10, 9165–9173 (2016)

 

  1. S. Wang, Z. Qin, G. S. Jung, F. J. Martin-Martinez, K. Zhang, M. J. Buehler, J. H. Warner, Atomically Sharp Crack Tips in Monolayer MoS2 and Their Enhanced Toughness by Vacancy Defects, ACS Nano, 10, 9831–9839 (2016)

 

  1. A. Markevich, M. Baldoni, J. H. Warner, A. I. Kirkland, E. Besley, Dynamic Behavior of Single Fe Atoms Embedded in Graphene, J. Phys. Chem. C. 120, 21998–22003 (2016)

 

  1. L. Flatten, Z. He, D. Coles, A. Trichet, A. Powell, R. Taylor, J. H. Warner, J. Smith, Room Temperature Exciton-Polaritons with Two-Dimensional WS2. Scientific Reports, 3, 33134, (2016)

 

  1. C. Gong, K. He, G-D. Lee, Q. Chen, A. W. Robertson, E. Yoon, S. Hong, J. H. Warner, In-Situ Atomic Level Dynamics of Heterogeneous Nucleation and Growth of Graphene from Inorganic Nanoparticle Seeds, ACS Nano, 10, 9397–9410 (2016)

 

  1. A. Mavalankar, T. Pei, E. M. Gauger, J. H. Warner, G. A. D. Briggs, E. A. Laird, Photon-assisted Tunneling and Charge Dephasing in a Carbon Nanotube Double Quantum Dot, Physical Review B, 93, 235428 (2016)

 

  1. H. Tan, Y. Fan, Y. Zhou, Q. Chen, W. Xu, J. H. Warner, Ultrathin 2D Photodetectors Utilizing Chemical Vapour Deposition Grown WS2 With Graphene Electrodes, ACS Nano, 10, 7866-7873, (2016)

 

  1. S. H. Dave, C. Gong, A. W. Robertson, J. H. Warner, J. C. Grossman, Chemistry and Structure of Graphene Oxide via Direct Imaging, ACS Nano, 10, 7515-7522, (2016)

 

  1. P. Gehring, H. Sadeghi, S. Sangtarash, C. S. Lau, J. Liu, A. Ardavan, J. H. Warner, C. J. Lambert, G. A. D. Briggs, J. A. Mol, Quantum Interference in Graphene Nanoconstrictions, Nano Letters, 16, 4210-4216, (2016)

 

  1. Z. He, X. Wang, W. Xu, Y. Zhou, Y. Sheng, Y. Rong, J. M. Smith, J. H. Warner, Revealing Defect-State Photoluminescence in Monolayer WS2 by Cryogenic Laser Processing, ACS Nano, 10, 5847-5855, (2016)

 

  1. Y. Fan, Y. Zhou, X. Wang, H. Tan, Y. Rong, J. H. Warner, Photo-Induced Schottky Barrier Lowering in 2D Monolayer WS2 Photodetectors, Advanced Optical Materials, 4, 1573–1581 (2016) 

 

  1. H. Q. Ta, A. Bachmatiuk, J. H. Warner, L. Zhao, Y. Sun, J. Zhao, T. Gemming, B. Trzebicka, Z. Liu, D. Pribat, M. H. Rummeli, Electron Driven Metal Oxide Effusion and Graphene Gasification at Room-Temperature, ACS Nano, 10, 6323-6330, (2016)

 

  1. D. S. Choi, A. W. Robertson, J. H. Warner, S. O. Kim, H. Kim, Low-Temperature Chemical Vapour Deposition Synthesis of Pt-Co Alloyed Nanoparticles with Enhanced Oxygen Reduction Reaction Catalysis, Advanced Materials, 28, 1573–1581 (2016)

 

  1. S. Wang, G-D. Lee, S. Lee, E. Yoon, J. H. Warner, Detailed Atomic Reconstruction of Extended Line Defects in Monolayer MoS2, ACS Nano, 10, 5419-5430, (2016)

 

  1. A. G. Rajan, J. H. Warner, D. Blankschtein, M. S. Strano, Generalized Mechanistic Model for the Chemical Vapour Deposition of 2D Transition Metal Dichalcogenide Monolayers, ACS Nano, 10, 4330-4344, (2016)

 

  1. A. L. Koh, S. Wang, C. Ataca, J. C. Grossman, R. Sinclair, J. H. Warner, Torsional Deformations in Sub-Nanometer MoS Interconnecting Wires, Nano Letters, 16, 1210-1217, (2016)

 

  1. Z. He, W. Xu, Y. Zhou, X. Wang, Y. Sheng, Y. Rong, S. Guo, J. Zhang, J. M. Smith, J. H. Warner, Biexciton Formation in Bilayer WS2, ACS Nano, 10, 2176-2183, (2016)

 

  1. Y. Sheng, W. Xu, X. Wang, Z. He, Y. Rong, J. H. Warner, Mixed Multilayer Vertical Heterostructures Utilizing Strained Monolayer WS2, Nanoscale, 8, 2639-2647, (2016)

 

  1. M. Pacios, P. Hosseini, Y. Fan, Z. He, O. Krause, J. Hutchison, J. H. Warner, H. Bhaskaran, Direct Manufacturing of Ultrathin Graphite on Three-Dimensional Nanoscale Features. Scientific Reports, 6, 22700 (2016)

 

  1. H. Tan, Y. Fan, Y. Rong, B. Porter, C. S. Lau, Y. Zhou, Z. He, S. Wang, H. Bhaskaran, J. H. Warner, Doping Graphene Transistors Using Vertical Stacked Monolayer WS2 Heterostructures Grown by Chemical Vapour Deposition. ACS Applied Materials and Interfaces, 8, 1644-1652, (2016)

 

  1. S. Wang, M. Pacios, H. Bhaskaran, J. H. Warner, Substrate Control for Large Area Continuous Films of Monolayer MoS2 by Atmospheric Pressure Chemical Vapour Deposition, Nanotechnology, 27, 085604, (2016)

 

  1. J. D. Wadey, A. Markevich, A. Robertson, J. Warner, A. Kirkland, E. Besley, Mechanisms of Monovacancy Diffusion in Graphene, Chemical Physics Letters, 648, 161-165 (2016)

2015

  1. C. S. Lau, H. Sadeghi, G. Rogers, S. Sangtarash, P. Dallas, K. Porfyrakis, J. H. Warner, C. J. Lambert, G. A. D. Briggs, J. Mol, Redox-dependent Franck-Condon Blockade and Avalanche Transport in Graphene-Fullerene Single-Molecule Transistors. Nano Letters, 1, 170-176, (2015)

 

  1. Y. Rong, Y. Sheng, M. Pacios, X. Wang, Z. He, H. Bhaskaran, J. H. Warner. Electroluminescence from Grain Boundary Regions in Monolayer WS2. ACS Nano, 10, 1093-1100, (2015)

 

  1. Q. Chen, A. W. Robertson, K. He, C. Gong, E. Yoon, A. I. Kirkland, G-D. Lee, J. H. Warner, Elongated Silicon-Carbon Bonds at Graphene Edges, ACS Nano, 10, 142-149, (2015)

 

  1. L. L. Bonilla, A. Carpio, C. Gong, J. H. Warner, Measuring Strain and Rotation Fields at the Dislocation Core in Graphene, Phys. Rev. B., 92, 155417 (2015)

 

  1. H. Quang, A. Bachmatiuk, A. Dianat, F. Ortmann, J. Zhao, J. H. Warner, J. Eckert, G. Cuniberti, M. Rummeli, In-situ Formation of Free-Standing Graphene-like Mono- and Bi- layer ZnO Membranes, ACS Nano, 9, 11408-11413, (2015)

 

  1. A. W. Robertson, G-D. Lee, K. He, C. Gong, Q. Chen, E. Yoon, A. I. Kirkland, J. H. Warner, Atomic Structure of Sub-Nanometer Pores in Graphene, ACS Nano, 9, 11599-11607, (2015)

 

  1. Z. Liu, Y-C. Lin, J. H. Warner, P-Y. Teng, C-H. Yeh, P-W. Chiu, S. Iijima, K. Suenaga, Characterization of Graphene and Transition Metal Dichalcogenide at the Atomic Scale, J. Phys. Soc. Jpn. 84, 121005 (2015)

 

  1. C. Gong, A. W. Robertson, K. He, G-D. Lee, E. Yoon, C. Allen, A. I. Kirkland, J. H. Warner, Thermally Induced Dynamics of Dislocations in Graphene at Atomic Resolution, ACS Nano, 9, 10066-10075 (2015)

 

  1. A. W. Robertson, G-D. Lee, K. He, Y. Fan, C. S. Allen, S. Lee, H. Kim, E. Yoon, H. Zheng, A. I. Kirkland, J. H. Warner. Partial Dislocations in Graphene and Their Atomic Level Migration Dynamics. Nano Letters, 15, 5950-5955 (2015)

 

  1. J. S. Kim, J. H. Warner, A. W. Robertson, A. I. Kirkland, Formation of Klein Edge Doublets from Graphene Monolayers, ACS Nano, 9, 8916-8922 (2015)

 

  1. P. Puczkarski, P. Gehring, C. A. Lau, J. Liu, A. Ardavan, J. H. Warner, G. A. D. Briggs, J. A. Mol, Three-terminal Graphene Single Electron Transistors Fabricated using Feedback-Controlled Electroburning, Applied Physics Letters, 107, 133105, (2015)

 

  1. C. S. Allen, E. Liberti, J. S. Kim, Q. Xu, Y. Fan, K. He, A. W. Robertson, H. W. Zandbergen, J. H. Warner, A. I. Kirkland, Temperature Dependence of Atomic Vibrations in Monolayer Graphene, J. Appl. Phys., 118, 074302 (2015)

 

  1. Y. Sheng, Y. Rong, Z. He, Y. Fan, J. H. Warner, Uniformity of Large-Area Bilayer Graphene Grown by Chemical Vapour Deposition. Nanotechnology, 26, 395601, (2015)

 

  1. Q. Chen, A. W. Robertson, K. He, C. Gong, E. Yoon, G-D. Lee, J. H. Warner, Atomic Level Distributed Strain within Graphene Divacancies from Bond Rotations, ACS Nano, 9, 8599-8608 (2015)

 

155   Q. Chen, A-L. Koh, A. W. Robertson, K. He, S. Lee, E. Yoon, G-D. Lee, R. Sinclair, J. H. Warner, Rotating Anisotropic Crystalline Silicon Nanoclusters in Graphene, ACS Nano, 9, 9497-9506 (2015)

        

  1. J. A. Mol, C. S. Lau, W. J. M. Lewis, H. Sadeghi, C. Roche, A. Cnossen, J. H. Warner, C. J. Lambert, H. L. Anderson, G. A. D. Briggs, Graphene-porphyrin single-molecule transistors, Nanoscale, 7, 13181-13185 (2015)

 

  1. K. He, A. W. Robertson, C. Gong, C. S. Allen, Q. Xu, H. Zandbergen, A. I. Kirkland, J. H. Warner, Controlled Formation of Closed-Edge Nanopores in Graphene, Nanoscale, 7, 11602-11610 (2015)

 

  1. A. De Leuca, M. T. Cole, R. H. Hopper, S. Boual, J. H. Warner, A. R. Robertson, S. Z. Ali, F. Udrea, J. W. Gardener, W. I. Milne, Enhanced Spectroscopic Gas Sensors using In-situ Grown Carbon Nanotubes, Applied Physics Letters, 106, 194101 (2015)

 

  1. Z. Sun, J. Masa, P. Weide, S. M. Fairclough, A. W. Robertson, P. Ebbinghaus, J. H. Warner, S. C. E. Tsang, M. Muhler, W. Schuhmann, High-Quality Functionalized Few-Layer Graphene: Facile Fabrication and Doping with Nitrogen as a Metal-Free Catalyst for the Oxygen Reduction Reaction, Journal of Materials Chemistry A. 3, 15444-15450 (2015)

 

  1. H. Kim, A. W. Robertson, S. O. Kim, J. M. Kim, J. H. Warner, Resilient High Catalytic Performance of Platinum Nanocatalysts with Porous Graphene Envelope, ACS Nano, 9, 5947-5957, (2015). (Front cover article) - Featured in Nature Nanotechnology, 10, 568 (2015)

 

  1. S. Wang, X. Wang, J. H. Warner, All Chemical Vapour Deposition Growth of MoS2:h-BN Vertical van der Waals Heterostructures, ACS Nano 9, 5246-5254, (2015)

 

  1. K. He, A. W. Robertson, Y. Fan, C. S. Allen, Y-C. Lin, K. Suenaga, A. I. Kirkland, J. H. Warner, Temperature Dependence of the Reconstruction of Zig-Zag Edges in Graphene, ACS Nano, 9, 4786-4795, (2015)

 

  1. Y. Rong, K. He, M. Pacios, A. W. Robertson, H. Bhaskaran, J. H. Warner, Controlled Preferential Oxidation of Grain Boundaries in Monolayer Tungsten Disulfide for Direct Optical Imaging, ACS Nano, 9, 3695-3703, (2015)

 

  1. N. Hjerrild, D. Neo, A. Kasdi, H. Assender, J. Warner, A. A. R. Watt, Transfer Printed Silver Nanowire Transparent Conductors for PbS-ZnO Heterojunction Quantum Dot Solar Cells, ACS Applied Materials and Interfaces, 7, 6417-6421, (2015)

 

  1. H. Sadeghi, J. A. Mol, C. S. Lau, G. A. D. Briggs, C. J. Lambert, Conductance Enlargement in Picoscale Electroburnt Graphene Nanojunctions, PNAS, 112, 2658-2663 (2015)

 

  1. Z. He, Y. Sheng, Y. Rong, G-D, Lee, J. Li, J. H. Warner, Layer-Dependent Modulation of Tungsten Disulfide Photoluminescence by Lateral Electric Fields, ACS Nano, 9, 2740, (2015)

 

  1. C. Gong, K. He, A. W. Robertson, E. Yoon, G-D. Lee, J. H. Warner, Spatially Dependent Lattice Deformations for Dislocations at the Edges of Graphene, ACS Nano, 9, 656-662, (2015)

 

  1. L. Sun, F. Banhart, J. H. Warner, Two-Dimensional Materials Under Electron Irradiation, MRS Bulletin, 40, 29-37, (2015)

 

2014

  1. Y. Rong, J. H. Warner, Wired Up: Interconnecting Two-Dimensional Materials with One-Dimensional Atomic Chains, ACS Nano, Perspective Article, 8, 11907-11912 (2014).

 

  1. K. He, A. W. Robertson, S. Lee, E. Yoon, G-D. Lee, J. H. Warner, Extended Klein Edges in Graphene, ACS Nano, 8, 12272-12279, (2014)

 

  1. J. I. Sohn, W-K. Hong, S. Lee, J. Ku, Y. J. Park, J. Hong, S. Hwang, K. H. Park, J. H. Warner, S. Cha, J. M. Kim, Surface Energy-Mediated Construction of Anisotropic Semiconductor Wires with Selective Crystallographic Polarity, Scientific Reports, 4, 5680 (2014)

 

  1. J. H. Warner, Y-C. Lin, K. He, M. Koshino, K. Suenaga, Stability and Spectroscopy of Single Nitrogen Dopants in Graphene at Elevated Temperatures, ACS Nano, 8, 11806-11815, (2014)

 

  1. S. Wang, Y. Rong, Y. Fan, M. Pacios, H. Bhaskaran, K. He, J. H. Warner, Shape Evolution of Monolayer MoS2 Crystals Grown by Chemical Vapour Deposition, Chemistry of Materials, 26, 6371-6379, (2014)

 

  1. J. H. Warner, Y-C. Lin, K. He, M. Koshino, K. Suenaga, Atomic Level Spatial Variations of Energy States Along Graphene Edges, Nano Letters, 14, 6155-6159 (2014)

 

  1. G-D. Lee, E. Yoon, K. He, A. Robertson, Jamie. H. Warner, Detailed Formation Processes of Stable Dislocations in Graphene, Nanoscale, 6, 14836-14844, (2014).

 

  1. M. Cichocka, J. Zhao, A. Backmatiuk, H. T. Quang, S. Gorantla, G. Martinez, I. Guillermo, J. Eckert, J. H. Warner, M. Rummeli, In-situ Observations of Pt Nanoparticles Coalescing Inside Carbon Nanotubes, RSC Advances, 4, 49442-49445, (2014)

 

  1. C. S. Lau, J. A. Mol, J. H. Warner, G. A. D. Briggs, Nanoscale Control of Graphene Electrodes, Physical Chemistry Chemical Physics, 16, 20398-20401 (2014)

 

  1. Y. Rong, Y. Fan, A-L. Koh, A. W. Robertson, K. He, S. Wang, H. Tan, R. Sinclair, J. H. Warner, Controlling Sulphur Precursor Addition for Large Single Crystal Domains of WS2, Nanoscale, 6, 12096-12103 (2014)

 

  1. Y. FanK. HeH. TanS. Speller, and J. H. Warner, Crack-Free Growth and Transfer of Continuous Monolayer Graphene Grown on Melted Copper, Chemistry of Materials, 26, 4984–4991 (2014)

 

  1. A. W. Robertson, G-D. Lee, K. He, E. Yoon, A. I. Kirkland, J. H. Warner. The Role of the Bridging Atom in Stabilizing Odd Numbered Graphene VacanciesNano Letters, 14, 3972–3980, (2014)

 

  1. Z. He, K. He, A. W. Robertson, A. I. Kirkland, D. Kim, J. Ihm, E. Yoon, G-D. Lee, J.H. Warner, Atomic Structure and Dynamics of Metal Dopant Pairs in GrapheneNano Letters, 14, 3766–3772, (2014)

 

  1. A. W. Robertson, G.D. Lee, K. He, E. Yoon, A. I. Kirkland, J. H. Warner, Stability and Dynamics of the Tetravacancy in Graphene, Nano Letters, 14, 1634-1642 (2014)

 

  1. C. Gong, A. W. Robertson, K. He, C. Ford, A. A. R. Watt, J. H. Warner, Interactions of Pb and Te atoms with Graphene, Dalton Transactions, 43, 7442-7448, (2014)

 

  1. M. Mukai, J. S. Kim, K. Omoto, H. Sawada, A. Kimura, A. Ikeda, J. Zhou, T. Kaneyama, N. P. Young, J. H. Warner, P. D. Nellist, A. I. Kirkland, The Development of a 200kV Monochromated Field Emission Electron Source, Ultramicroscopy, 140, 37-43 (2014)

 

  1. A. W. Robertson, K. He, A. I. Kirkland, J. H. Warner, Inflating Graphene with Atomic Scale Blisters, Nano Letters, 14, 908-814, (2014)

 

  1. P. Mthunzi, K. He, S. Ngcobo, T. Khanyile, J. H. Warner, Graphene for Improved Femtosecond Laser Based Pluripotent Stem Cell Transfection. Journal of Biophotonics, 7, 351-362 (2014)

 

  1. C. S. Allen, G. Liu, Y. Chen, A. W. Robertson, K. He, K. Porfyrakis, J. Zhang, G. A. D. Briggs, J. H. Warner, Optically Enhanced Charge Transfer Between C60 and Single-Wall Carbon Nanotubes in Hybrid Electronic Devices, Nanoscale, 6, 572 (2014)

 

  1. A. W. Robertson, C. Ford, K. He, A. I. Kirkland, A. A. R. Watt, J. H. Warner, PbTe Nanocrystal Arrays on Graphene and the Structural Influence of Capping Ligands, Chemistry of Materials, 26, 1567-1575, (2014)

 

  1. K. He, G-D. Lee, A. W. Robertson, E. Yoon, J. H. Warner, Hydrogen-Free Graphene Edges, Nature Communications, 5, 3040 (2014)

 

  1. C. Li, M. Y. Cole, W. Lei, K. Qu, K. Ying, Y. Zhang, A. R. Robertson, J. H. Warner, S. Ding, X. Zhang, B. Wang, W. I. Milne, Highly Electron Transparent Graphene for Field Emission Triode Gates, Advanced Functional Materials, 24, 1218-1227, (2014)

 

2013

  1. J. H. Warner, G-D. Lee, K. He, A. W. Robertson, E. Yoon, A. I. Kirkland, Bond Length and Charge Density Variations within Extended Arm Chair Defects in Graphene. ACS Nano, 7, 9860-9866, (2013)

 

  1. J. H. Warner, Y. Fan, A. W. Robertson, K. He, E. Yoon, G. D. Lee, Rippling Graphene at the Nanoscale Through Dislocation Addition. Nano Letters, 13, 4937-4944, (2013)

 

  1. H. E. Lim, Y. Miyata, R. Kitaura, Y. Nishimura, Y. Nishimoto, S. Irle, J. H. Warner, H. Kataura, H. Shinohara, Growth of Carbon Nanotubes via Twisted Graphene Nanoribbons, Nature Communications, 3548, (2013)

 

  1. J. H. Warner, Z. Liu, K. He, A. W. Robertson, K. Suenaga, Sensitivity of Graphene Edge States to Surface Adatom Interactions. Nano Letters, 13, 4820-4826, (2013)

 

  1. L. Gong, R. J. Young, I. A. Kinloch, S. J. Haigh, J. H. Warner, J. A. Hinks, Z. Xu, L. Li, F. Ding, I. Riaz, R. Jalil, K. Novoselov, Reversible Loss of Bernal Stacking during the Deformation of Few-Layer Graphene in Nanocomposites. ACS Nano, 7, 7287-7294, (2013)

 

  1. A. W. Robertson, B. Montanari, K. He, C. S. Allen, Y. A. Wu, N. Harrison, A. I. Kirkland, J. H. Warner, Structural Reconstruction of the Graphene Monovacancy, ACS Nano, 7, 4495-4502, (2013)

 

  1. C. A. Cattley, C. Cheng, S. M. Fairclough, L. M. Droessler, N. P. Young, J. H. Warner, J. M. Smith, H. E. Assender, A. A. R. Watt, Low Temperature Phase Selective Synthesis of CuZnSnS quantum dots. Chemical Communications, 49, 3745-3747, (2013)

 

  1. A. W. Robertson, J. H. Warner, Atomic Resolution Imaging of Graphene by Transmission Electron Microscopy, Nanoscale (Feature Article), 5, 4079-4093 (2013)

 

  1. A. W. Robertson, B. Montanari, K. He, J. Kim, C. S. Allen, Y. A. Wu, J. Olivier, J. Neethling, N. Harrison, A. I. Kirkland, J. H. Warner, Dynamics of Single Fe Atoms in Graphene Vacancies, Nano Letters, 13, 1468-1475 (2013)

 

  1. D. H. Choi, Q. Wang, Y. Azuma, Y. Majima, J. H. Warner, Y. Miyata, H. Shinohara, R. Kitaura, Fabrication and Characterization of Fully Flattened Carbon Nanotubes: A New Graphene Nanoribbon Analogue, Scientific Reports, 3, 1617 (2013)

 

  1. R. Nakanishi, R. Kitaura, J. H. Warner, Y. Yamamoto, S. Arai, Y. Miyata, H. Shinohara, Thin Single-Wall BN-Nanotubes Formed Inside Carbon Nanotubes. Scientific Reports, 3, 1385 (2013)

 

  1. W. Li, C. Li, M. T. Cole, K. Qu, S. Ding, Y. Zhang, J. H. Warner, X. Zhang, B. Wang, W. I. Milne, A Graphene-Based Large Area Surface-Conduction Electron Emission Display. Carbon, 56, 255-263 (2013)

 

2012

  1. A. W. Robertson, C. S. Allen, Y. A. Wu, K. He, J. Olivier, J. Neethling, A. I. Kirkland, J. H. Warner, Spatial Control of Defect Creation in Graphene at the Nanoscale, Nature Communications, 3, 1144 (2012)

 

  1. J. Luo, W. Ouyang, X. Li, Z. Jin, L. Yang, C. Chen, J. Zhang, Y. Li, J. H. Warner, L-M. Peng, Q. Zheng, J. Zhu, Pointwise Plucking of Suspended Carbon Nanotubes. Nano Letters, 12, 3363-3367 (2012).

 

  1. C. S. Allen, A. R. Robertson, A. I. Kirkland, J. H. Warner, The Identification of Inner Tube Defects in Double-Wall Carbon Nanotubes, Small, 8, 3810-3815, (2012)

 

  1. J. H. Warner, E. R. Margine, M. Mukai, A. W. Robertson, F. Giustino, A. I. Kirkland, Dislocation Driven Deformations in Graphene. Science, 337, 209-212 (2012).

 

  1. L. D. Nyamen, V. S. R. R. Pullabhotla, A. A. Nejo, P. T. Ndifon, J. H. Warner, N. Revaprasadu, Synthesis of anisotropic PbS nanoparticles using heterocyclic dithiocarbamate complexes. Dalton Transactions, 41, 8297-8302, (2012)

 

  1. J. H. Warner, M. Mukai, A. I. Kirkland. The Atomic Structure of ABC Rhombohedral Stacked Trilayer Graphene. ACS Nano, 6, 5680-5686, (2012)

 

  1. M. J. Holmes, Y. S. Parks, X. Wang, C. C. S. Chan, B. P. L. Reid, H. Kim, J. Luo, J. H. Warner, R. A. Taylor, Optical Studies of GaN nanocolumns containing InGaN quantum disks and the effect of strain relaxation on the carrier distribution. Phys. Stat. Sol. C., 9, 712-714 (2012)

 

  1. M. Fouquet, B. C. Bayer, S. Esconjaurequi, R. Blume, J. H. Warner, S. Hofmann, R. Schlogl, C. Thomsen, J. Robertson, Highly chiral-selective growth of single-walled carbon nanotubes with a simple monometallic Co catalyst. Phys. Rev. B., 85, 235411 (2012)

 

  1. Y. Wu, Y. Fan, S. Speller, G. Creeth, J. Sadowski, K. He, A. W. Robertson, C. Allen, J. H. Warner. Large Single Crystals of Graphene on Melted Copper using Chemical Vapour Deposition. ACS Nano, 6, 5010-5017, (2012).

 

  1. J. Moghul, Y. Wu, J. H. Warner, Mechanical Response of Few-Layer Graphene Films on Copper. Scripta Materialia, 67, 273-276, (2012)

 

  1. G.Zhong, J. H. Warner, M. Fouquet, A. W. Robertson, B. Chen, J. Robertson, Growth of Ultrahigh Density Single-Walled Carbon Nanotube Forests by Improved Catalyst Design, ACS Nano, 6, 2893-2903 (2012)

 

  1. I. Ibrahim, A. Bachmatiuk, J. H. Warner, B. Büchner, G. Cuniberti, M. H. Rümmeli, CVD grown horizontally aligned single wall carbon nanotubes: Synthesis routes and growth mechanisms. Small, 8, 1973-1992 (2012)

 

  1. B. Li, H. Cao, J. Yin, Y. A. Wu, J. H. Warner, Synthesis and separation of dyes via Ni@reduced graphene oxide nanostructures. Journal of Materials Chemistry, 22, 1876-1883, (2012)

 

  1. A. Wongariyakawee, F. Schaeffel, J. H. Warner, D. O’Hare, Surfactant directed synthesis of calcium aluminium layered double hydroxides nanoplatelets. Journal of Materials Chemistry, 22, 7751-7756, (2012)

 

  1. H. Cao, X. Wu, G. Yin, J. H. Warner, Synthesis of Adenine Modified Reduced Graphene Oxide Nanosheets. Inorganic Chemistry, 51, 295-2960 (2012)

 

  1. M.T. Cole, K. Hou, J.H. Warner, J.S. Barnard, K. Ying, Y. Zhang, C. Li, K.B.K. Teo, W.I. Milne, In-situ deposition of sparse vertically aligned carbon nanofibres on catalytically activated stainless steel mesh for field emission applications. Diamond & Related Materials, 23, 66-71, (2012)

 

  1. Y. A. Wu, J. H. Warner, Shape and Property Control of Mn Doped ZnSe Quantum Dots: From Branched to Spherical. Journal of Materials Chemistry, 22, 417-424, (2012).

 

  1. Y. S. Chaudhary, T. W. Woolerton, C. S. Allen, J. H. Warner, E. Pierce, S. W. Ragsdale, F. A. Armstrong. Visible Light-Driven CO2 Reduction by Enzyme Coupled CdS Nanocrystals. Chemical Communications, 48, 58-60, (2012)

 

2011

  1. A. W. Robertson, A. Bachmatiuk, Y. A. Wu, F. Schaeffel, B. Buechner, M. Ruemelli, J. H. Warner, Structural Distortions in Few Layer Graphene from Creases, ACS Nano, 5, 9984-9991, (2011)

 

  1. C. S. Allen, Y. Ito, A. W. Robertson, H. Shinohara, J. H. Warner, Two-Dimensional Coalescence Dynamics of Encapsulated Metallofullerenes in Carbon Nanotubes. ACS Nano, 5, 10084-10089 (2011).

 

  1. F. Schaeffel, M. Wilson, J. H. Warner, Motion of Light Adatoms and Molecules on the Surface of Few-Layer Graphene. ACS Nano, 5, 9428-9441, (2011)

 

  1. J. H. Warner, N. P. Young, A. I. Kirkland, G. A. D. Briggs, Resolving Strain in Carbon Nanotubes at the Atomic Level, Nature Materials, 10, 958-962, (2011)

 

  1. Y. A. Wu, A. W. Robertson, F. Shaeffel, S. C. Speller, J. H. Warner, Aligned Rectangular Few-Layer Graphene Domains on Copper Surfaces, Chemistry of Materials, 23, 4543-4547, (2011).

 

  1. A. W. Robertson, A. Bachmatiuk, Y. A. Wu, F. Schaffel, B. Rellinghaus, B. Buchner, M. H. Rummeli, J. H. Warner, Atomic Structure of Interconnected Few Layer Graphene Domains, ACS Nano, 5, 6610–6618, (2011)

 

  1. I. Ibrahim, A. Bachmatiuk, F. Borrnert, J. Bluher, U. Wolff, J. H. Warner, B. Buchner, C. Cuniberti, M. H. Rummeli. Optimizing substrate surface and catalyst conditions for high yield chemical vapor deposition grown epitaxially aligned single-walled carbon nanotubes, Carbon 49, 5029-5037 (2011)

 

  1. M. J. Holmes, Y. S. Park, X. Wang, C. C. S. Chan, B. P. L. Reid, H. Kim, R. A. Taylor, J. H. Warner, J. Luo, Optical studies on a single GaN nanocolumn containing a single InxGa1-xN quantum disk, Applied Physics Letters, 98, 251908 (2011)

 

  1. E. J. Lawrence, G. G. Wildgoose, L. Aldous, Y. A. Wu, J. H. Warner, R. G. Compton, 3-Aryl-3-(trifluoromethyl)diazirines as versatile photoactivated

         "linker" molecules for the improved covalent modification of graphitic and carbon nanotube surfaces, Chemistry of Materials, 23, 3740–3751 (2011)

 

  1. H. Wang, J. Luo, F. Schaeffel, M. Ruemmeli, G. A. D. Briggs, J. H. Warner, Carbon Nanoelectronic Devices Compatible with Transmission Electron Microscopy. Nanotechnology, 22, 245305 (2011)

 

  1. Y. A. Wu, A. Kirkland, F. Schaeffel, K. Porfyrakis, N. P. Young, G. A. D. Briggs, J. H. Warner. Utilizing Boron Nitride Sheets as thin supports for high resolution imaging of nanocrystals. Nanotechnology, 22, 195603 (2011)

 

  1. A. Robertson, J. H. Warner, Hexagonal single crystal domains of few layer graphene on copper foils. Nano Letters, 11, 1182-1189 (2011)

 

  1. A. Scott, A. Dianat, F. Borrnert, A. Bachmatiuk, S. Zhang, J. H. Warner, E. Borowiak-Palen, M. Knupfer, B. Buchner, G. Cuniberti, M. H. Rummeli, The catalytic potential of high k dielectrics for graphene formation. Applied Physics Letters, 98, 073110 (2011)

 

  1. F. Shaeffel, M. Wilson, A. Bachmatiuk, M. Rummeli, U. Queitsch, B. Rellinghaus, G. A. D. Briggs, J. H. Warner, Atomic Resolution Imaging of the Edges of Catalytically Etched Suspended Few Layer Graphene. ACS Nano, 5, 1975-1983, (2011)

 

  1. B. Li, H. Cao, J. Shao, M. Qu, J. H. Warner, Superparamagnetic Fe3O4 Nanocrystals@Graphene Composites for Energy Storage Devices. Journal of Materials Chemistry, 21, 5069-5075 (2011)

 

  1. J. Luo, P. Tian, C-T. Pan, A. Robertson, J. H. Warner, E. Hill, G. A. D. Briggs. Ultralow Secondary Electron Emission of Graphene. ACS Nano, 5, 1047-1055, (2011)

 

  1. J. H. Warner, S. Plant, N. P. Young, K. Porfyrakis, A. Kirkland, G. A. D. Briggs, Atomic Scale Growth Dynamics of Nanocrystals within Nanotubes. ACS Nano, 5, 1410-1417 (2011)

         - Featured as a ‘Research Highlight’, Nanoscience: Glimpses of Crystal Growth, Nature, 470, 142 (2011)

 

  1. J. K. Sprafke, S. D. Stranks. J. H. Warner, R. J. Nicholas, H. L. Anderson, Noncovalent Binding of Carbon Nanotubes by Porphyrin Oligomers. Angewandte Chemie International Edition, 50, 2313-2316 (2011)

 

  1. C. J. Wang, Y. A. Wu, R. M. J. Jacobs, J. H. Warner, G. R. Williams, D. O’Hare, Reverse Micelle Synthesis of Co-Al LDHs: Control of Particle Size and Magnetic Properties. Chemistry of Materials, 23, 171-180, (2011)

 

2010

  1. M. Zaka, Y. Ito, H. Wang, W. Yan, A. Robertson, Y. A. Wu, M. H. Rummeli, D. Staunton, T. Hashimoto, J. J. L. Morton, A. Ardavan, G. A. D. Briggs, J. H. Warner, Electron paramagnetic resonance investigations of purified catalyst-free single-walled carbon nanotubes. ACS Nano, 4, 7708-7716 (2010)

 

  1. H. Wang, J. Luo, A. Robertson, Y. Ito, W. Yan, V. Lang, M. Zaka, F. Schaffel, M. H. Rummeli, G. A. D. Briggs, J. H. Warner. High performance field effect transistors from solution processed carbon nanotubes. ACS Nano, 4, 6659-6664 (2010)

 

  1. F. Schaffel, J. H. Warner, A. Bachmatiuk, U. Queitsch, B. Rellinghaus, B. Buchner, L. Schultz, M. H. Rummeli, Tracking down the catalytic hydrogenation of multilayer graphene. Physica Status Solid C., 7, 2731-2734 (2010)

 

  1. S. Gorantla, F. Borrnert, A. Bachmatiuk, M. Dimitrakopoulou, R. Schonfelder, F. Schaffel, J. Thomas, T. Gemming, J. H. Warner, B. I. Yakobson, J. Eckert, B. Buchner, M. H. Rummeli, In-situ observations of fullerene fusion and endocytotic entry into carbon nanotubes. Nanoscale, 2, 2077-2079, (2010)

 

  1. J. H. Warner, M. H. Rummeli, A. Bachmatiuk, B. Buchner, Examining the stability of folded graphene edges against electron beam induced sputtering with atomic resolution. Nanotechnology, 21, 325702 (2010)

 

  1. M. H. Rummeli, A. Bachmatiuk, A. Scott, F. Borrnert, J. H. Warner, V. Hoffman, J-H. Lin, G. Cuniberti, B. Buechner, Direct Low Temperature Nano-Graphene Synthesis over a Dielectric Insulator. ACS Nano, 4, 4206-4210 (2010)

 

  1. J. H. Warner, M. Wilson, Elastic distortions of carbon nanotubes induced by chiral fullerene chains. ACS Nano, 4, 4011-4016, (2010)

 

  1. R. M. Brown, Y. Ito, J. H. Warner, A. Ardavan, H. Shinohara, G. A. D. Briggs, J. J. L. Morton, Spin coherence times of metallofullerenes: Y, Sc, La@C82. Physical Review B, 82, 033410 (2010)

 

  1. R. J. Nicholls, K. Sader, J. H. Warner, S. R. Plant, K. Porfyrakis, P. D. Nellist, G. A. D. Briggs, D. J. H. Cockayne, Direct imaging and chemical identification of the encapsulated metal atoms in bimetallic endofullerene peapods. ACS Nano, 4, 3943-3948 (2010)

 

  1. A. Bachmatiuk, F. Borrnert, F. Schaeffel, M. Zaka, G. S. Martynkowa, D. Placha, R. Schoenfelder, P. M. F. J. Costa, N. Ioannides, J. H. Warner, R. Klingeler, B. Buchner, M. H. Rummeli, The formation of stacked-cup carbon nanotubes using chemical vapour deposition from ethanol over silica. Carbon, 48, 3175-3181 (2010)

 

  1. J. H. Warner, The influence of the number of layers of graphene on the atomic resolution images obtained from aberration-corrected high resolution transmission electron microscopy. Nanotechnology, 21, 255707 (2010)

 

  1. J. Luo, J. H. Warner, C. Feng, Y. Yao, Z. Jin, H. Wang, C. Pan, S. Wang, L. Yang, Y. Li, J. Zhang, A. A. R. Watt, L. Peng, J. Zhu, G. A. D. Briggs, Ultrahigh secondary electron emission of carbon nanotubes. Applied Physics Letters, 96, 213113 (2010)

 

  1. F. Borrnert, S. Gorantla, A. Bachmatiuk, J. H. Warner, I. Ibrahim, J. Thomas, T. Gemming, J. Eckert, G. Cuniberti, B. Buchner, M. H. Rummeli, In-situ observations of self-repairing single-walled carbon nanotubes. Physical Review B., 81, 201401(R) (2010)

 

  1. J. H. Warner, M. H. Ruemmeli, A. Bachmatiuk, B. Buchner, Structural transformations of carbon chains inside nanotubes. Physical Review B., 81, 155419 (2010)

 

  1. F. Borrnert, C. Borrnert, S. Gorantla, X. Liu, A. Bachmatiuk, J-O. Joswig, F. R. Wagner, F. Schaffel, J. H. Warner, R. Schonfelder, B. Rellinghaus, T. Gemming, J. Thomas, M. Knupfer, B. Buchner, M. H. Rummeli, Single-wall-carbon-nanotube/single-carbon-chain molecular junctions. Physical Review B., 81, 085439 (2010)

 

  1. R. Beal, A. Stavrinados, J. H. Warner, J. Smith, H. Assender, A. A. R. Watt, The molecular structure of polymer-fullerene composite solar cells and its influence on device performance. Macromolecules, 43, 2343-2348, (2010)

 

  1. J. H. Warner, M. H. Rummeli, A. Backmatiuk, B. Buchner, Atomic resolution imaging and topography of hexagonal boron nitride sheets produced by chemical exfoliation. ACS Nano, 4, 1299-1304, (2010)

 

  1. M. Zaka, J. H. Warner, Y. Ito, J. J. L. Morton, M. H. Rummeli, T. Pichler, A. Ardavan, H. Shinohara, G. A. D. Briggs. Exchange Interactions of Spin-Active Metallofullerenes in Solid-State Carbon Networks. Physical Review B, 81, 075424 (2010).

 

  1. J. H. Warner, M. H. Rummeli, A. Bachmatiuk, M. Wilson, B. Buchner. Examining Co Based Nanocrystals on Graphene Using Low-Voltage Aberration Corrected Transmission Electron Microscopy. ACS Nano, 4, 470-476, (2010)

 

  1. Y. Ito, J. H. Warner, M. Zaka, R. Pfeiffer, T. Aono, N. Izumi, H. Okimoto, J. J. L. Morton, A. Ardavan, H. Shinohara, H. Kuzmany, H. Peterlik, G. A. D. Briggs, Controlling Intermolecular Spin Interactions of La@C82 in Empty Fullerene Matrices Physical Chemistry Chemical Physics. 12, 1618-1623 (2010)

 

  1. S. Gorantla, F. Borrnert, A. Bachmatiuk, M. Dimitrakopoulou, F. Schaffel, R. Schonfelder, J. Thomas, T. Gemming, J. H. Warner, G. Cuniberti, J. Eckert, B. Buchner, M. H. Rummeli, Enhanced π-π Interactions Between a C60 Fullerene and a Buckle Bend on a Double-Walled Carbon Nanotube. Nano Research, 3, 92-97 (2010)

 

  1. H. Cao, H. Zheng, K. Liu, X. Zhang, J. H. Warner, Bioinspired Peonylike b-Ni(OH)2 Nanostructures with Enhanced Electrochemical Activity and Superhydrophobicity. ChemPhysChem, 11, 489-494 (2010)

 

2009

  1. F. Shaffel, J. H. Warner, A. Bachmatiuk, B. Rellinghaus, B. Buchner, L. Schultz, M. H. Rummeli, On the catalytic hydrogenation of graphite for graphene nanoribbon fabrication. Physica Status Solidi (b), 246, 2540-2544 (2009)

 

  1. M. H. Holmes, Y. S. Park, J. H. Warner, R. A. Taylor, Quantum confined Stark effect and corresponding lifetime reduction in a single InxGa1-xN quantum disk. Applied Physics Letters, 95, 181910 (2009)

 

  1. A. Bachmatiuk, F. Borrnert, M. Grobosch, F. Schaffel, U. Wolff, A. Scott, M .Zaka, J. H. Warner, R. Klingeler, M. Knupfer, B. Buchner, M. H. Rummeli, Investigating the graphitization mechanism of SiO2 nanoparticles in CVD. ACS Nano, 3, 4098-4104 (2009)

 

  1. S. Tetali, M. Zaka, R. Schoenfelder,; A. Bachmatiuk, F. Boerrnert, I. Ibrahim, J. Lin, G. Cuniberti, J. H. Warner, B. Buechner, M. Rummeli, Unravelling the mechanisms behind mixed catalysts for the high yield production of single walled carbon nanotubes. ACS Nano, 3, 3839-3844 (2009).

 

  1. G. Zhong, S. Hofmann, F. Yan, H. Telg, J. H. Warner, D. Eder, C. Thomsen, W. Milne, J. Robertson, Acetylene: a key growth precursor for single-walled carbon nanotube forests Journal of Physical Chemistry C., 113, 17321-17325, 2009

 

  1. A. Stavrinados, S. Xu, J. H. Warner, J. L. Hutchinson, J. M. Smith, A. A. R. Watt, Superstructures of PbS nanocrystals in a conjugated polymer and the aligning role of oxidation. Nanotechnology, 20, 445608 (2009)

 

  1. J. H. Warner, Y. Ito, M. H. Rümmeli, B. Büchner, H. Shinohara, G. A. D. Briggs, Capturing the motion of molecular nanomaterials encapsulated within carbon nanotubes with ultrahigh temporal resolution. ACS Nano, 3, 3037-3044 (2009)

 

  1. J. H. Warner, M. H. Rümmeli, L. Ge, T. Gemming, B. Montanari, N. M. Harrison, B. Büchner, G. A. D. Briggs, Structural transformations in graphene studied with high spatial and fast temporal resolution, Nature Nanotechnology, 4, 500 (2009)

 

  1. J. H. Warner, Y. Ito, M. H. Rümmeli, T. Gemming, B. Büchner, H. Shinohara, G. A. D. Briggs, One-Dimensional confined motion of single metal atoms inside double-walled carbon nanotubes, Physical Review Letters, 9, 195504 (2009)

           

  1. J. H. Warner, F. Schäffel, G. Zhong, M. H. Rümmeli, B. Büchner, J. Robertson, G. A. D. Briggs, Investigating the diameter dependent stability of single-walled carbon nanotubes, ACS Nano, 3, 1557 (2009)

 

38     F. Schäffel, J.  H. Warner, A. Bachmatiuk, B. Rellinghaus, B. Büchner, L. Schultz, M. H. Rümmeli, Shedding light on the crystallographic etching of graphene at the atomic scale, Nano Research, 2, 695-705 (2009)

        

  1. J. H. Warner, F. Schaeffel, M. Ruemmeli, B. Buechner, Examining the edges of few-layer graphene sheets, Chemistry of Materials, 21, 2418 (2009)

        

  1. J. H. Warner, M. H. Ruemmeli, T. Gemming, B. Buechner, G. A. D. Briggs, Direct imaging of rotational stacking faults in few layer graphene, Nano Letters, 9, 102-106 (2009)

        

  1. S. R. Plant, T. Cheong Ng, J. H. Warner, G. Dantelle, A. Ardavan, G. A. D. Briggs, K. Porfyrakis, A bimetallic endohedral fullerene: PrSc@C80, Chemical Communications, 27, 4082-4084 (2009)

 

2008

  1. J. H. Warner, Y. Ito, M. Zaka, L. Ge, T. Akachi, H. Okimoto, K. Porfyrakis, A. A. R. Watt, H. Shinohara, G. A. D. Briggs,

Projects Available

Sensor Technology Based on Large Area Synthetic Graphene
Jamie Warner

Sensor technology, such as touch screen displays and pressure/strain sensors, will be developed using graphene. The graphene will be synthetic and of large area, produced using metal catalyst assisted chemical vapour deposition. Processing methods for transferring the graphene onto transparent flexible polymer substrates will be developed. This project aims at bringing graphene into application and will utilize recent advances within the group for producing outstanding synthetic graphene material. Optical and electron beam lithography will be used to pattern the graphene and metal electrodes for devices. Interfacing with computer hardware will be undertaken to achieve functioning sensor technology.

Also see homepages: Jamie Warner

Structural studies of Graphene and other 2D crystals with single atom sensitivity
Jamie Warner, Angus Kirkland

Graphene is a 2D crystal only one atom thick and is ideal for studying individual atoms by transmission electron microscopy. This project will focus on understanding fundamental crystal defects in graphene and other 2D crystals such as boron nitride, MoS2 and WS2. Mono-vacancies and the other non-6 member ring structures that exist in the unique 2D crystal. It will also investigate the grain boundary interface between two graphene domains with the aim of mapping out the unique atomic stitching that occurs. Graphene will be grown by chemical vapour deposition. This project will use Oxford's state-of-the-art aberration-corrected high resolution transmission electron microscope, equipped with a monochromator for the electron beam to give unprecedent spatial resolution at a low accelerating voltage of 80 kV. Advanced image analysis techniques, including exit-wave reconstruction, and comparison to image simulations will be utilized for a deeper understanding of the atomic structure.

Also see homepages: Angus Kirkland Jamie Warner

Insulating and Semiconducting 2D crystals for electronic applications
Jamie Warner

Graphene is a semi-metal 2D crystal, Boron Nitride (BN) an insulating 2D crystal, and MoS2/WS2 are semiconducting 2D crystals. Realizing the potential of 2D crystals in electronic applications requires all 3 of these variants. We have undertaken years of research in growing graphene crystals by chemical vapour deposition and can now produce high quality materials. However, further improvement is needed to advance the synthesis of BN and MoS2/WS2 2D crystals to obtain similar quality films. In this project 2D crystals will be synthesized by chemical vapour deposition to produce materials with varying band structure. New synthetic strategies will be developed in order to produce large single crystal structures on a variety of substrates compatible with device processing. The atomic structure of the new 2D crystals will be characterized using advanced electron microscopy (scanning electron microscopy and transmission electron microscopy). The electronic properties of the new materials will be analysed by fabricating nanoelectronic devices such as transistors. This is a unique opportunity to undertake a project involving new materials synthesis, characterization of the atomic structure, and implementation in nanoelectronic transistor arrays. The project is well integrated into the group's goals by developing new 2D crystals that will have large up-take amongst other researchers for applications ranging from flexible electronics, pressure sensors, optical detectors, LEDs and solar cells.

Also see homepages: Jamie Warner

Graphene based 2D nanoelectronics
Jamie Warner

Graphene has exceptional electronic properties, combined with a 2D structure that makes it attractive for a wide range of electronic applications. Other 2D crystals such as MoS2 and BN have similar 2D structure, but are semiconducting and insulating. This project will focus on the fabrication and characterization of nanoelectronic devices such as field effect transistors and ultrathin optoelectronic devices using 2D crystals. It will involve working in a clean-room environment using electron beam lithography to fabricate nanostructured electrodes and the patterning of graphene from the top down. The graphene and other 2D materials will be available within the group and are grown by chemical vapour deposition. The aim of this project is to solve processing and materials issues that currently limit the potential of 2D materials in electronics.

Also see homepages: Jamie Warner

Spectroscopy and device applications of monolayer semiconductors coupled to optical microcavities
Prof Jamie Warner, Prof Jason Smith

Monolayer semiconductor materials such as WS2 and MoSe2 display strong optical transitions that are attractive for nanoscale optoelectronic devices. These properties can be both enhanced and harnessed by coupling the materials to optical microcavities, opening possibilities for fast optical switches, ultra-low threshold lasers, and advanced quantum light sources. This project brings together the expertise of two leading research groups in 2D materials (Prof Jamie Warner) and in microcavity photonics (Prof Jason Smith). The project will build on some preliminary work which provides first demonstrations of basic phenomena, and will develop the experiments further to investigate ‘strong coupling’ (ie the creation of polaritons - part electronic excitation, part photon) and the switching of polariton states to realise ambient temperature devices.

Also see homepages: Jason Smith Jamie Warner

Also see a full listing of New projects available within the Department of Materials.