material-science-2018-keynote

Page 7

Notes:

allied

academies

July 23-25, 2018 | Moscow, Russia

Materials Science and Engineering

International Conference on

Journal of Materials Science and Nanotechnology | Volume 2

ptical metamaterials have attracted intensive attention in recent

years due to their novel properties and high potential for a

wide range of applications. Integration of such metamaterials with

traditionalsemiconductorscouldpromotethatsemiconductordevice

performance to a high level. In this keynote, I will share with you our

recent work on split ring resonators (SRRs) and surface plasmon

enhanced photodetection. With the electron-beam-lithography

process we developed, we have demonstrated two and three

dimensional SRR arrays with controllable magnetic resonances for

radiationsfromlongwaveinfraredtonearultravioletandinvestigated

their applications for biochemical sensing. By integratingmetallichole

arraywithinAsSbbasedheterojunctionphotodiode,wehaverealized

strong enhancement in mid-wave infrared photodetection and

made them workable at room temperature. A room temperature

detectivity of 8×10

Jones has been demonstrated. We also

invented two-terminal millimeter wave photodetectors based on

fast transportation of SPP induced non-equilibrium electrons and

a noise equivalent power of 1.5×10

-13

WHz

-1/2

has been achieved.

Speaker Biography

Dao Hua Zhang received PhD degrees from the University of New South Wales, Australia.

He is a professor, Deputy Director of Centre of Excellence for Semiconductor Lighting

and Displays, Program Director of Photonic Nano-Structures and Application of Nanyang

Technological University, Singapore. He has published over 460 papers in international

journals and international conferences, 6 books and proceedings, and 3 book chapters.

He also filed 3 patents. He is the editor and guest editor of about 10 international journals,

including IEEE Transaction on Nano Technology, Journal of Crystal Growth, and Thin Solid

Films. He is in International Advisory Committee of several international conferences and

has chaired and co-chaired a number International conferences. He is a fellow of Institute

of Physics, UK.

Dao Hua Zhang

Nanyang Technological University, Singapore

Integration of optical metamaterials and semiconductors for enhanced optical sensing