CHENG Zhenzhou, under supervision of Prof. TSANG Hon Ki, has been selected for the Postgraduate Research Output Award 2013. The award is nominated annually by each Faculty to recognize research postgraduate students with commendable research achievements during their studies. It consists of a plaque and a cash prize of HK$25,000. The award will be presented to Zhenzhou at the 76th Congregation for the Conferment of Degrees on November 20, 2014.
Project Title:
Graphene-on-Silicon Suspended Membrane Platform for Mid-Infrared Photonics Applications
Introduction:
Mid-infrared integrated photonics has many positional applications in spectroscopy, biochemical sensing, and communications. However, it is a difficult spectral region to operate in because of lacking of light source, room temperature photodetector and suitable integrated platform. Zhenzhou Cheng demonstrated for the first time that commercial available SOI wafer can be modified to be used in mid-infrared applications. By integrated graphene on top, the graphene-on-silicon suspended membrane waveguide is very promising to fabricate mid-infrared active device. And a high responsivity, room temperature, graphene-on-silicon waveguide photodetector was demonstrated together with another postdoctoral fellow in EE department.
From 2012 to 2013, Zhenzhou Cheng has published (or been accepted) six first author journal papers in Nature Photonics (equally contribution with a postdoctoral fellow), Optics Letters, Applied Physics Letters, and IEEE Journal of Selected Topics in Quantum Electronics, IEEE Photonics Journal and several conference papers.
Congratulations!

Dr. XU Ke, supervised by Prof. TSANG Hon Ki, won the 2014 Hong Kong Institution of Science (HKIS) Young Scientist Award in the category of Engineering Science and received the top prize of HK$10,000. The HKIS annual conference was held at the Hong Kong University of Science and Technology on 8 Nov 2014.

Congratulations!

In the recent IEEE International Microwave Symposium, our Ph.D. Student Ping ZHAO (Year 2) received a best student paper award, honorable mention, at the 2014 IEEE International Microwave Symposium (IMS2014) for his work on analytical optimal synthesis of microwave diplexer and multiplexer.

The paper, “An Analytical Approach to Synthesis of Diplexers with an Optimal Lumped-element Junction Model”, co-authored by Ping’s supervisor, Prof. Ke-Li WU, presented an elegant approach to this long-time outstanding issue in the wireless microwave industry. The proposed approach provides a means to optimally synthesize multiplexers analytically, rather than by brute force non-linear optimization.

The paper was selected from 266 student papers and was recognized as one of the top 10 student papers presented at the IMS 2014 conference, which is the flagship conference of the IEEE Microwave Theory and Techniques Society (MTT-S). Members of MTT-S are engaged in research, development, design, or manufacturing of high frequency materials, devices, circuits, components, or systems. The IEEE MTT-S International Microwave Symposium (IMS) is the premier annual international meeting for technologists involved in all aspects of microwave theory and practice.

MAK Kai Ho, Ph.D. student, and BU Shi, M.Phil. student, both supervised by Prof. LEUNG Ka Nang, won the Best Paper Awards at the 2014 IEEE Student Symposium on Electron Devices & Solid-State Circuits held on Dec. 5 2014 in Hong Kong. Their papers are entitled “Optimizations of Scaling Factor and Stage Number of a STCB Amplifier” by MAK Kai Ho, LEUNG Ka Nang and GOH Wang Ling, and “Optimization of Load Regulation for Low-Dropout Regulators” by BU Shi and LEUNG Ka Nang, respectively.

Congratulations!