publication . Article . Other literature type . 2010

All-(111) Surface Silicon Nanowires: Selective Functionalization for Biosensing Applications

M. N. Masood; S. Chen; E. T. Carlen; A. van den Berg;
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  • Published: 23 Nov 2010
  • Country: Netherlands
Abstract
e demonstrate the utilization of selective functionalization of carbon-silicon (C-Si) alkyl and alkenyl monolayers covalently linked to all-(111) surface silicon nanowire (Si-NW) biosensors. Terminal amine groups on the functional monolayer surfaces were used for conjugation of biotin n-hydroxysuccinimide ester. The selective functionalization is demonstrated by contact angle, x-ray photoelectron spectroscopy (XPS), and high resolution scanning electron microscopy (HRSEM) of 5-nm diameter thiolated Au nanoparticles linked with streptavidin and conjugated to the biotinylated all-(111) surface Si-NWs. Electrical measurements of monolayer passivated Si-NWs show imp...
Subjects
Medical Subject Headings: technology, industry, and agriculture
free text keywords: nanowires, biosensing, EWI-19443, IR-75859, Si-C monolayers, METIS-277511, Silicon, General Materials Science, Nanowire, Monolayer, Alkyl, chemistry.chemical_classification, chemistry, Contact angle, Surface modification, Streptavidin, chemistry.chemical_compound, Nanotechnology, Materials science, Biosensor, chemistry.chemical_element
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