Dr. Henry Du's Ultra-Sensitive Sensing Research Published in Journal of Advanced Materials




   Story by Schaefer School of Engineering & Science

January 20, 2010

Dr. Henry Du, Professor and Director of the Department of Chemical Engineering and Materials Science, together with Dr. Svetlana Sukhishvili, Professor of Chemistry and Co-Director of Stevens Nanotechnology Graduate Program, have jointly authored a paper entitled “Towards Full-Length Accumulative SERS-active Photonic Crystal Fiber” that appears in a current issue of Advanced Materials, a prestigious weekly peer-reviewed scientific journal covering materials science.

The paper, which was developed in conjunction with a research team consisting of Yun Han, Siliu Tan, Maung Kyaw Khaing Oo, and Denis Pristinski, discusses the pioneering work towards the integration of nanotechnology with photonic crystal fibers (PCF) for ultra-sensitive sensing and detection based on surface-enhanced Raman scattering (SERS).

The Stevens team has demonstrated for the first time that a PCF optofluidic platform can be endowed with the SERS capacity along the entire fiber. They have shown the competitive interplay between SERS gain and light attenuation as the optical path length increases for PCFs containing immobilized Ag nanoparticles, with low particle coverage density being essential for a net accumulative Raman gain throughout the fiber.

This research has implications for homeland defense, work place safety, and health care. It may also be used in fundamental studies of chemical, biological, and catalytic interactions, as well as chemical and biological sensing and detection.

To read this article, visit the Advanced Materials website.


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