Graphene Week 24th & 25th Ivan Buckley
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Graphene introduction and overview Ivan Buckley Project Manager NGI #GrapheneWeek
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Transcript of Graphene Week 24th & 25th Ivan Buckley
- 1. Graphene introduction and overview Ivan Buckley Project Manager NGI #GrapheneWeek
- 2. http://www.graphene.manchester.ac.uk Unexpected Science from a Pencil Trace Ivan Buckley Project Manager National Graphene Institute (NGI) at the University of Manchester [email protected]
- 3. http://www.graphene.manchester.ac.uk
- 4. Made in Manchester
- 5. Limitless Potential?? V
- 6. Graphene Superlatives 6 thinnest imaginable material strongest material ever measured (theoretical limit) stiffest known material (stiffer than diamond) most stretchable crystal (up to 20% elastically) record thermal conductivity (outperforming diamond) highest current density at room T (million times of those in copper) highest intrinsic mobility (100 times more than in Si) conducts electricity in the limit of no electrons lightest charge carriers (zero rest mass) longest mean free path at room T (micron range) most impermeable (even He atoms cannot squeeze through) ?
- 7. Graphene Properties 7 Morphological Surface area 1gr = 2630 m2 Aspect ratio varies typically 2 for solvent exfoliation. Transparent to light (97.7 %) and electrons Mechanical Stiffness = 1 TPa Strength = 130 GPa Chemical Easily functionalised Processable
- 8. What is GRAPHENE? Graphene is defined as: -2 dimensional - an allotrope of carbon - one-atom-thick planar sheets of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice. but accepted as - less than 10 layers thick - less than 30 nm. Buckyballs Carbon Nanotubes Graphite
- 9. How to make GRAPHENE? Micromechanical cleavage of Graphite (a)Attach a piece of graphite to sticky-tape (Cellotape) (b)Use the sticky tape to thin out the graphite (c) Place the thin graphite on a Silicon wafer, with a surface layer of Silicon Dioxide (d)Remove most layers of graphite leaving behind graphene.
- 10. How to make GRAPHENE? Micromechanical cleavage of Graphite Images courtesy P. Blake
- 11. Strongly layered material Can We Cheat Nature? Slice down to one atomic plane
- 12. Production by removing elements from a large starting material. Assembly of a nanostructure from smaller elements. How to make graphene
- 13. Graphene & its derivatives A D B C E CVD Graphene (Gr) Graphite (Gt) Reduced Graphene Oxide (ReGO) Graphene oxide (GO) Graphite oxide (GtO) Graphene
- 14. Mass Production Price Quality Mechanical Exfoliation research prototyping Liquid Phase Exfoliation coating, composites, energy, bio CVD electronics photonics coating bio Molecular Assembly nanoelectronics SiC electronics RF transistors
- 15. Early Graphene Applications Composites (Light weight, multifunctional and highly damage tolerant structures) Graphene electronics: specialist devices (e.g. high frequency transistors, spintronics) or in combination with other electronics technologies (e.g. printed electronics). Flexible Electronics (e.g. as replacement for indium tin oxide in a range of applications such as touch screens, solar cells etc.) Paints and coatings (e.g. barrier, modification of optical/electrical properties of chemical derivatives of graphene). Graphene Photonics (e.g. photomodulators, photodetectors, plasmonics, ultra-fast lasers, metamaterials). Graphene sensors (e.g. chemical, strain sensors). Energy storage (e.g. graphene-based batteries, super-capacitors) ..??
- 16. Graphene Applications
- 17. Graphene Applications Introducing the new GR Graphene stick range for 2014/15 The New Graphene Enhanced Technology will offer greater energy transfer and performance, whilst the Graphene composite construction gives greater power when hitting and improved response when controlling the ball, as well as shock absorbing properties for added feel and response.
- 18. Graphene Applications
- 19. Graphene Technology Roadmap
- 20. Graphene Applications are already here
- 21. Barriers/challenges to exploitation 21 Hype Bubble Manufacturability - Good and reproducible quality graphene materials, t for purpose Development of eective and reliable processing techniques (e.g. to disperse, align, deposit, functionalise, integrate etc.) Scalability, aordability and security of supply Clear demonstration of competitive advantage supported by cost benet data. Confusing nomenclature No standards No Killer App Health and Safety uncertainties
- 22. 22
- 23. Graphene@Manchester NGI Centre for Doctoral Training for Graphene Graphene Engineering Innovation centre Commercialisation Graphene Research at Manchester The City of Manchester
- 24. Research Excellence the largest single graphene research group (Over 200 researchers, PDRAs and Post Grads) Total Income of c170m over the last 4 years Interdisciplinary Physics, Materials Science, EEE, Bio and Life Sciences, Chemistry, Chem Eng, etc., 30 groups Unique Graphene Integrated Research Approach Production, Characterisation, Materials Modelling, through to Application
- 25. Funding/Investment Gap in the Manufacturing-Innovation Process Valley of Death
- 26. Beyond Graphene Novoselov et al PNAS (2005) 1 m 2D Bi2Sr2CaCu2Ox in SEM 2D crystals from other layered materials High Quality Different From 3D Precursor 2D MoS2 in TEM 5 m 1m 0 8 232D NbSe2 in AFM 10 m 2D boron nitride in optics
- 27. Composite materials and Heterostructures Few materials determine our world Electronics: silicon Construction: steel Aerospace: aluminium Few materials narrow opportunities Composite materials & Heterostructures InGaN laser Plastics Fibres Carbon Fibres Still need wider range of properties AlInN HEMT
- 28. Layer by Layer Material Engineering Building materials atom by atom Wide range of compositions - wide range of functionalities sensor solar cell transistor interconnect reinforcement Composite materials & Heterostructures InGaN laser Plastics Fibres Carbon Fibres Still need wider range of properties AlInN HEMT
- 29. http://www.graphene.manchester.ac.uk Contact: [email protected]
- 30. National Graphene Institute (NGI) Contact: [email protected] http://www.graphene.manchester.ac.uk/