Presenter:Dr.Ping Bai 

 A*SATRInstitute of High Performance Computing,Singapore

Topic:Plasmonic properties and applications of metallic nanostructures

Time: 9:30AM, Apr.18th (Monday)

Location:Conference Room B, BLDG 909-1F

Abstract

Whenlight interacts with free electrons in a metal, collective oscillations of theelectrons or plasmons can be excited. At plasmon resonant frequency,electromagnetic fields near the metal surface are greatly enhanced, promoting awide range of applications. We have researched into metallic nanostructures forvarious applications such as imaging, sensing, photovoltaic, photocatalysis andcosmetics. In this talk, I will focus on our developed plasmonic nanostructuresduring past 10 years for optoelectronic integration and biosensing. In theformer, a novel hybrid plasmonic waveguide is used as a building block todevelop high-performance plasmonic devices, including bends, filters,splitters, ring resonators and modulators. Charge transfer plasmons have beenexploited to develop on-chip plasmonic sources and THz-speed photodetectors.For the biosensing, a point-of-care sensing system has been developed basedlocalized surface plasmon resonance. Localized surface plasmons are alsocoupled with propagating plasmons including long range surface plasmons toimprove the sensitivity of the sensors. Florescence quenching with metallicstructures will also be discussed. 

Biography

Dr. Ping Bai is aSenior Scientist and Program Manager of Electronics & Photonics Departmentin the A*STAR Institute of High Performance Computing. His research interestscover nanoelectronics, nanophotonics and biosensing, with focus on biosensingbased on surface plasmon resonance and intra-chip optical data transmission byintegrating plasmonic, photonic and electronic devices into the same chip. Hehas authored or coauthored over 80 scientific articles in internationalreferred journals, such as Science, ACS Nano, and Nanoscale, given more than 30invited talks/seminars, and filed 13 patents and technical disclosures. 

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