ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
SiC is a biocompatible material and a candidate as a transducer for biosensors. Here wehave investigated the possibility to functionalize SiC with biomolecules. We have also processedvery simple devices and performed electrical characterization. Double polished SiC samples with aC-face substrate and Si-face low doped epilayer have been functionalized on both sides. The SiCwas first treated by HF in order to remove the native oxide, partly successful on the Si-face side butprobably not on the C-face side. MPTMS, 3-mercaptopropyl trimethoxysilane, was chosen as thebiomolecule since it has both a silanol group to be used as an anchoring group to the substrate and athiol group available for further linking possibilities. The functionalization was evaluated by XPS,contact angle experiments, AFM and electrical measurements. The MPTMS molecules attachedwith the thiol (or sulphur containing) group pointing out from the surface on both faces of the SiC.Interesting differences between the two faces are however revealed by the analysis
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.556-557.957.pdf
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