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Incheon, South Korea

Kim J.A.,Sungkyunkwan University | Qin H.,Sungkyunkwan University | Hwang T.,Sungkyunkwan University | Kim H.U.,Sungkyunkwan University | And 2 more authors.
ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning | Year: 2014

In this study, we have suggested various sensors for aerosol, VOCs (volatile organic compounds), and biomolecules detecting with diverse sensing layers such as, tetraethylorthosilicate (TEOS), thymol blue, polypyrrole, graphene, graphene oxide (GO), reduced graphene oxide (rGO), DNA, and so on. Every sensors have shown very interesting sensing characteristics with good performances. Steadily, we are proceeding various fiber optic sensors with fascinating sensing layers and mechanisms as well.

San B.H.,Sungkyunkwan Advanced Institute of Nanotechnology | San B.H.,Sungkyunkwan University | Kim J.A.,Sungkyunkwan Advanced Institute of Nanotechnology | Kulkarni A.,Sungkyunkwan University | And 13 more authors.
ACS Nano | Year: 2014

The electronic properties of biomolecules and their hybrids with inorganic materials can be utilized for the fabrication of nanoelectronic devices. Here, we report the charge transport behavior of protein-shelled inorganic nanoparticles combined with graphene and demonstrate their possible application as a bionanohybrid capacitor. The conductivity of PepA, a bacterial aminopeptidase used as a protein shell (PS), and the platinum nanoparticles (PtNPs) encapsulated by PepA was measured using a field effect transistor (FET) and a graphene-based FET (GFET). Furthermore, we confirmed that the electronic properties of PepA-PtNPs were controlled by varying the size of the PtNPs. The use of two poly(methyl methacrylate) (PMMA)-coated graphene layers separated by PepA-PtNPs enabled us to build a bionanohybrid capacitor with tunable properties. The combination of bioinorganic nanohybrids with graphene is regarded as the cornerstone for developing flexible and biocompatible bionanoelectronic devices that can be integrated into bioelectric circuits for biomedical purposes. © 2014 American Chemical Society.

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