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. Author manuscript; available in PMC: 2014 Aug 8.
Published in final edited form as: Wiley Interdiscip Rev Nanomed Nanobiotechnol. 2011 Mar 9;3(3):229–246. doi: 10.1002/wnan.136

Figure 8.

Figure 8

a) Diagram illustrating binding of streptavidin to a biotin-functionalized CNT sensor. b) Frequency shift of a quartz crystal microbalance mass sensor as streptavidin solution is introduced to the functionalized nanobiosensor. Note that the response is specific to the streptavidin solution; negligible response is seen with solutions of other biomolecules. c) Electrical response of the CNT-based nanobiosensor as streptavidin solution is introduced at increasing concentrations. Again, the response is specific to streptavidin.152 Reproduced with permission from Chen RJ, Bangsaruntip S, Drouvalakis KA, Wong Shi Kam N, Shim M, Li Y, Kim W, Utz PJ, Dai H. Noncovalent functionalization of carbon nanotubes for highly specific electronic biosensors. Proceedings of the National Academy of Sciences of the United States of America 2003, 100:4984. Copyright 2003 National Academy of Sciences, U.S.A.