首页 | 学院概况 | 机构设置 | 本科教育 | 研究生教育 | 科学研究 | 学生工作 | 党建工作 | 招生就业 | 全国计算机等级考试 
站内搜索:
今天是:
文章内容
当前位置: 首页>>公示公告>>正文
光电工程学院/国际半导体学院“教授博士论坛”:From absorbers to lenses: designing highly-efficient metasurfaces
2019-03-05 16:01   审核人:

时间:2019年3月7日(星期四)9:00

地点:老图书馆学术报告厅

主讲人: Dr Mitchell Guy Kenney (PhD, MSci)  格拉斯哥大学

主讲人简介:

    Dr Mitchell Guy Kenney is currently Postdoctoral Research Associate, Microsystems Technology Group, School of Engineering, University of Glasgow. He obtained the M.Sci. (2011) and Ph.D. (2016) Physics with Nanotechnology, University of Birmingham, UK. He is currently in charge of Project: Superspectral camera focal-plane array (SUPERCAMERA) (EP/J018678/1) and Project: Nanostructured Ultra-Thin Lenses (QuantIC phase 2 project). 

    He has 11 journal publications in renowned international peer-reviewed journals 4 as equally contributing (1st) author, one in Nature Nanotechnology, two in Advanced Materials,one in ACS Photonics, 977 citations, H-Index of 7 (Google Scholar).  Impact factor of 123.6 , Average impact factor per paper is 11.2. Co-Investigator on successful Quantic grant application, worth £245k. Contribution to grant is 20% ownership, equivalent to £49k personal income. Researcher Co-Investigator of unfunded EPSRC grant application (final-stage status). 

    Invited talk at invite-only Rank Prize Funds symposium on Metasurfaces (Lake District, 2017), ~40 world-leading speakers, including Prof. Sir. John Pendry, Prof. Andrea Alu, Prof. Nader Engheta. Peer-reviewer for ACS Photonics, Royal Society Open Science, Optics Express, Optical Materials Express, Journal of Applied Physics, APL Photonics, Annalen der Physik (Publons accredited). Conferences attended: Oral – Nanop 2017, Rank Prize funds 2017;  Poster – Nanop 2017, NanoMeta 2015.

内容简介:

    Metasurfaces, the 2D variant of metamaterials, have been at the forefront of optics research in the past decade, due to the simplicity and flexibility of their design, and the impact of novel devices which can  be  realised.  Primarily  designed  using  plasmonic  effects  –  fabricated  from  patterned  metallic nanostructures  –  metasurfaces  suffered  from  poor  performance  when  carrying  out  the  desired response.  This  is  due  to  the  low  interaction  of  light  when  transmitted  through  metallic  thin  films, where the efficiency is typically limited to ~15% or less. Here, I will talk about my work carried out during the last 5 years at both the University of Birmingham (Prof. Shuang Zhang) and, more recently, at the University of Glasgow (Prof. David Cumming), on developing metasurfaces which exhibit very high  performance  utilising  reflection  or  transmission  operation.  As  examples,  I  will  talk  about  the following  projects;  firstly,  visible-IR  holograms,  which  were  realised  using  spatially-oriented  gold nanorods atop a groundplane (reflectarrays), were able to reach 80% efficiency (Nature Nano, 2015). Secondly, by utilising silicon herringbone structures and geometric phase, asymmetric transmission of circularly polarised THz light was achieved, with conversion efficiencies exceeding 60% (Adv. Mater, 2016).  Thirdly,  whilst  working  towards  the  “SuperCamera”  (triple  wavelength)  project  at  UoG,  I designed ultra-broadband THz absorbers of one octave bandwidth and an average absorption of 86% using  supercells  of  fractal  antennas  (ACS  Photon,  2017).  Finally,  my  current  work  lies  with  the production of large aperture dielectric metalenses (1 mm and 10 mm) operating in the near Infrared, with a range of f-numbers and reaching focussing efficiencies of 60% (in progress). Metasurfaces are now at a standard of interest to commercial prospects and show real promise for being a highly sought after commodity in the future.

主办单位:光电工程学院/国际半导体学院

热忱欢迎广大师生参加交流!

关闭窗口

重庆邮电大学光电学院  版权所有2016-