Hydrophobins are amphiphilic proteins, which self-assemble at solid-liquid interface in nanometric biolayer, that can be used to passivate porous silicon (PSi) and PSi dioxide. Since these proteins interact with complex sugars in nature, we have used several protein-modified PSi dioxide optical transducers, such as rugate filter, Thue-Morse sequence, and micro-cavity, in monitoring hydrophobins-glucose binding. Sugar concentration of 1.2 mg/mL can be easily detected by measuring water contact angle.
24 Jan 2014
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