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Please use this identifier to cite or link to this item: http://dspace.lib.cranfield.ac.uk/handle/1826/3447

Document Type: Postprint
Title: Nano-Porous Light-Emitting Silicon Chip as a Potential Biosensor Platform
Authors: Zhang, Juankun
Zhang, Weiliang
Dong, Shanmu
Turner, Anthony P. F.
Fan, Qingjie
Jia, Shiru
Issue Date: Jan-2008
Citation: Juankun Zhang; Weiliang Zhang; Shanmu Dong; Anthony P. F. Turner; Qingjie Fan; Shiru Jia, Nano-Porous Light-Emitting Silicon Chip as a Potential Biosensor Platform,Analytical Letters, Volume 40, Issue 8 January 2007 , pages 1549 - 1555
Abstract: Nano-porous silicon (PS) offers a potential platform for biosensors with benefits both in terms of light emission and the large functional surface area. A light emitting PS chip with a stable and functional surface was fabricated in our laboratory. When protein was deposited on it, the light emission was reduced in proportion to the protein concentration. Based on this property, we developed a rudimentary demonstration of a label-free sensor to detect bovine serum albumin (BSA). A serial concentration of BSA was applied to the light chip and the reduction in light emission was measured. The reduction of the light intensity was linearly related to the concentration of the BSA at concentrations below 10-5 M. The detection limit was 8×10-9 M.
URI: http://dx.doi.org/10.1080/00032710701380798
http://hdl.handle.net/1826/3447
Appears in Collections:Staff publications - Cranfield Health

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