Xiquan Cui
Graduate Student
MC 136-93, 34 Moore
Phone: (626) 395-4844
Email: xiquan@caltech.edu
Education
BS & MS, Optical engineering, Zhejiang University, China, 2003
MS, Physics, Portland State University, USA, 2005
Research Overview
My research is primarily focused on studying how light behave and interact with nano systems, and inventing novel micro/nano fluidic devices with optical components to push the diagnostic and measurement techniques in biomedicine.
Current project:
Compact optofluidic microscope (OFM)
OFM is a brand new imaging system developed by our group. It uses a line of nanoapertures on a metal film as a multiple near-field probes array to collect the near-field optical information of the cells or micro-organisms flowing in microfluidic channel. Because of its near-field detection feature, OFM has no bulky lens and can achieve resolution higher than the diffraction limit. Now I’m developing a new OFM fabrication method to make it compatible with current micro-fabrication techniques. My goal is to integrate OFM into microfluidic chips and make the smallest “camera” in the world.
Nanofluidic Fluorescent Display (NFD)
Based on Daniel Kleppner’s “Inhibited spontaneous emission” paper in 1981, we propose a new type of fluorescent flat panel display technique, which has the advantages of no limit of the screen size, fast response, energy economy and low cost. This display technique is based on controlling the fluorescent emission of charged fluorophores in nano metal fluidic channels by a bias voltage. Now I’m making nano metal fluidic channels which can suppress fluorescent emission in any designed wavelength, and studying the migrating dynamics of charged fluorophores in nano metal fluidic by electrophoresis. But this is not just a simple new display technique. It is a cool technique with which you can control the so-called “spontaneous” emission by tuning its environmental vacuum.
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