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Nano-porous light-emitting silicon chip as a potential biosensor platform
Tianjin University Science and Technology, Coll Biotechnol, Tianjin Key Lab Ind Microbiol, Tianjin 300457, Peoples R China; Cranfield University, Silsoe, Beds, England; Lanlike Tianjin Electron Chemistry High Tech Ltd, Tianjin, Peoples R China; .
Tianjin University Science and Technology, Coll Biotechnol, Tianjin Key Lab Ind Microbiol, Tianjin 300457, Peoples R China; Cranfield University, Silsoe, Beds, England; Lanlike Tianjin Electron Chemistry High Tech Ltd, Tianjin, Peoples R China; .
Tianjin University Science and Technology, Coll Biotechnol, Tianjin Key Lab Ind Microbiol, Tianjin 300457, Peoples R China; Cranfield University, Silsoe, Beds, England; Lanlike Tianjin Electron Chemistry High Tech Ltd, Tianjin, Peoples R China; .
Cranfield University, UK.ORCID iD: 0000-0002-1815-9699
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2007 (English)In: Analytical Letters, ISSN 0003-2719, E-ISSN 1532-236X, Vol. 40, no 8, 1549-1555 p.Article in journal (Refereed) Published
Abstract [en]

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 x 10(-9) M.

Place, publisher, year, edition, pages
Taylor andamp;amp; Francis , 2007. Vol. 40, no 8, 1549-1555 p.
Keyword [en]
nano-porous silicon; label-free biosensor; optical sensor
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-65178DOI: 10.1080/00032710701380798ISI: 000247761700004OAI: oai:DiVA.org:liu-65178DiVA: diva2:395059
Available from: 2011-02-04 Created: 2011-02-04 Last updated: 2017-12-11

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P. F. Turner, Anthony

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