Date & Time

Time: 12:00-1:00 pm (CST), Nov.8

Venue: IB 2025

Zoom ID: 715 337 7467

*Light refreshments will be provided

Speaker：

Prof. Changcheng Zheng

Associate Professor of Physics

 Prof. Domna Kotsifaki

Assistant Professor of Physics

DESCRIPTION：

Prof. Zheng and Prof. Kotsifaki will present light-matter interactions.

The light spectrum is a very power tool for studying carrier dynamics in various kinds of materials. Laser spectroscopy can be used to investigate the fundamental behavior of electrons and their interaction with photons (from laser) and phonons (from the materials), aided by an optical cryostat (with a temperature lower than 4 K).

The ability to manipulate small particles of matter using the forces of light forms the basis of a number of exciting research areas, spanning fundamental physics, applied chemistry, medicine and biology. Optical trapping can be used to manipulate micro-organisms, cells, and micro-/nano-plastics and engineer a new generation of biodegradable technology. Light controlled at the nanometer scale using nanostructured metals can be used for trapping, sensing and studying single nanoparticles, such as proteins and/or DNA. 

BIO： 

Prof. Changcheng Zheng

Associate Professor of Physics, Duke Kunshan University Director of Research Support Office (RSO)

His research focuses on experimental condense matter physics: optical properties of semiconductors and nanostructures, exciton dynamics in bulk and low-dimensional systems under different excitation conditions, and nonlinear optical properties of novel luminescent/fluorescent materials. His teaching interests at Duke Kunshan include courses on experimental physics research. Zheng has a B.Sc. in physics from the University of Science and Technology of China and a Ph.D. from the University of Hong Kong, where he also worked as a research assistant/associate. Before joining Duke Kunshan, he was a lecturer at Xi’an Jiaotong-Liverpool University.  Dr. Changcheng Zheng joined DKU in July 2019 and has worked (is working) with 6 UG students in the optical characterization lab. They are (or plan to) pursuing postgraduate studies in US including Duke and Cornell. He is looking forward to working with more excellent students who are interested in studying the physics of materials via experimental means. 

Prof. Domna Kotsifaki

Assistant Professor of Physics

Her research focuses on interface between nanophotonics and biophotonics to gain a better understanding of the processes involved to manipulate nanometer-sized particles using light fields which contribute to the development of new techniques for single-molecule level detection and analysis. Her research interests up to now are concerned mainly the study and control of dielectric nanoparticle/bio-particles, investigating fluid dynamics using plasmonic-based approaches, development of new sensing platforms, technologies enabled by optical resonators/metamaterial, implementation of novel techniques for new therapeutic approaches. Dr. Kotsifaki joined the DKU in 2022 and established the Photonics Lab, where six students are studying interactions between light and matter.