报告内容摘要

This paper gives an overview of various fabrication methods of nanostructured materials. Special highlight will be given on the use of sustainable Aerosol Assisted Chemical Vapour Deposition (AACVD) based technologies which can create a wide range of materials (e.g. ceramics, polymer, composite, semiconductor and biomaterials) with unique structures and superior properties through fine structural and compositional control at molecular level. These include vacuum CVD and low cost non vacuum AACVD technologies for the fabrication of nanomaterials (e.g. nanoparticles, nanowires, nanocomposites) and thin/thick films synthesis platform of high performance materials for high value added structural, functional and biomedical applications. Non vacuum AACVD is becoming increasingly important due to its low cost and eco-friendly features. The process principle, deposition mechanism, and reaction chemistry of CVD in general, as well as AACVD in particular will be presented. The process/structure/property relationships of nanomaterials produced by AACVD based technologies will be discussed. Case studies of nanomaterials fabricated by AACVD for structural, electrical, catalytic, clean energy and biomedical applications will be presented. The scientific and technological significant of the emerging non vacuum AACVD based methods will be highlighted and compared with other chemical and physical vapour processing techniques for the fabrication of nanostructured materials.

报告人简介

UCL Institute for Materials Discovery, University College of London, United Kingdom

http://www.ucl.ac.uk/institute-for-materials-discovery

Professor Kwang-Leong Choy (DSc, FIMMM, FRSC) leads a team of 20 researchers performing pioneering research into novel, sustainable, and cost-effective processing of nanostructured thin films and thick coatings using non-vacuum and environmentally friendly Chemical Vapour Deposition (CVD) based methods, characterised by unique nanocrystalline microstructure and superior properties for structural and functional applications. She has over 25 years experience in surface coating and nanomaterials.  She is an international leading expert in cost-effective, sustainable non vacuum processing technologies. She has authored over 200 peer-reviewed publications, including 2 books and 20 patents related to CVD based nanoparticles, nanowires, nanostructured ceramic and composite thin and thick films. She has been invited to author a review article on “CVD of coatings” for Progress in Materials Science, published by Pergamon Press (Vol.48 [2], 2003). She has given over 60 keynote/invited lectures. Professor Choy obtained her D.Phil. in Materials Science from the University of Oxford, where she was awarded the Hetherington Prize and Oxford Metallurgical Society Award. She was a Violette and Samuel Glasstone Research Fellow at Oxford where she has developed flame assisted vapour deposition (a variant of CVD) of films, before joining Imperial College in 1994 as a Governor's Lecturer, where she was promoted to Reader in 2001. At Imperial, she pioneered the innovative non-vacuum Electrostatic Spray Assisted Vapour Deposition (ESAVD) method at Imperial College London, which has led to the Grunfeld Medal and Prize from Institute of Materials (UK) and a spin-out company, IMPT Ltd. ESAVD is capable of addressing the increasing industrial demand in cost-effective and environmentally friendly manufacturing of high performance ceramic films with fine structural and composition control at the nanoscale level for high value added engineering applications. ESAVD has been exploited and being scaled-up by industry for the manufacture of functional films for selective gas separation, reforming catalyst, thermal barrier coatings and thin films for solar cells and clean energy applications. She has been invited to publish her work on ESAVD and edited a book on “Innovative Processing of Films and Nanocrystalline Powders” by Imperial College Press (2002). She joined the University of Nottingham on October 2002 to take a Professorship in Materials. She is the research director of the an industrial sponsored University Innovation Centre. Her team  has invented a novel Aerosol-Assisted Ion Deposition (AAID) process specifically for thin and super thin polymeric films and polymer nanocomposite coatings for engineering and renewable energy applications. Over the past four years, Professor Choy’s work has led to her participation in numerous multimillion pounds research programmes. These include EU, EPSRC and government flagship grants, as well as research contracts and collaboration. She has been the international expert reviewer. She has been awarded Guest Professorships at the University of Uppsala (2001/03), Ningbo Institute of Materials Technology and Engineering (NIMTE, 2010/2012), and Chinese Academy of Sciences (CAS) Visiting Professorship for Senior International Scientist (2011/2013). Professor Choy is now a Director of UCL Centre of Materials Discovery and Professor of Materials Discovery at University College London since February 2014 to lead a multidisciplinary research centre to integrate fundamental chemistry, physics, materials, engineering and biological principles across the disciplines to create new opportunities in materials creation, discovery and exploitation for the development in clean energy, nanotechnology, engineering and biomedicine technologies.

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