Department of Physics

Indian Institute Of Technology Madras , Chennai

The Little Laser That Could A Focused Laser Beam: Useful Tool for Nanoscience Research

Speaker : Prof. C.H. Sow, National University of Singapore

2016-11-09

Abstract :

Nanoscale materials have attracted great interests in recent years. Low dimensional systems such as 2D materials, nanoparticles, nanorods, nanowalls or networks are an important category of nanostructured materials with great potential as important components for nanoscale devices with various interesting functions. Thus, in the past decade, many techniques have been developed for the synthesis of such nanostructured materials. In addition, researchers have put in great effort in the studies of hybrid nanomaterials. With these efforts, a wide variety of nanostructured materials have been investigated. After the synthesis of the nanomaterials, it is desirable to be able to further modify the properties of the nanomaterials to improve the functionality of these nanomaterials. If we can create micropatterns on these as-grown nanomaterials, it will be able to further expand their potential applications. In recent years, efforts involve the alteration of physical and/or chemical properties of nanomaterials via the use of a focused laser beam have generated a lot of interests. In this presentation, we will present our efforts in the studies of hybrid nanomaterials with the emphasis on how the focused laser beam can be used as/for (a) Micro Manipulation Tool: Optical Tweezers, (b) Micropatterning and Microstructuring Tool, (c) Micro-Architecturing, (d) Micro-Photocurrent Studies, (e) Micro Photochemical Reaction (f) Micro light-House and (g) Micro-Actuating Tool.

ABOUT THE SPEAKER:

Prof. Chorng Haur Sow is a condensed matter physicist specializing in nano and 2D materials. He is currently the Head of the Department of Physics at the National University of Singapore (NUS). After graduating from NUS with an M.Sc. in Physics he moved to the University of Chicago to undertake his Ph.D. Upon completion of his doctorate he spent two years at Bell Labs before returning to NUS as faculty. He is the author of over 200 publicationns and was awarded the 2016 Omicron Prize for outstanding research in nanotechnology performed in Singapore. In addition to this illustrious research career, he is a renowned teacher and has won many accolades in this regard. He is also a past President of the Institute of Physics Singapore.

Key Speaker Prof. C.H. Sow, National University of Singapore
Guests None
Place CLT
Start Time 5:00 PM
Finish Time 6:00 PM
External Link https://physics.iitm.ac.in/colloquium/Sow_nov16.pdf