1. THz spectroscopy on graphene-like materials for bio-compatible devices
- Author
-
Antonello Andreone, Gian Paolo Papari, Alessandro Pezzella, Michela Alfè, Roberto Di Capua, Valentina Gargiulo, Papari, Gian Paolo, Gargiulo, Valentina, Alfè, Michela, Di Capua, Roberto, Pezzella, Alessandro, and Andreone, Antonello
- Subjects
hybrids ,Physics ,Permittivity ,Graphene ,graphene ,General Physics and Astronomy ,Nanotechnology ,Tz spectroscopy ,02 engineering and technology ,Surface finish ,Conductivity ,021001 nanoscience & nanotechnology ,01 natural sciences ,law.invention ,010309 optics ,biocompatibility ,Mean field theory ,law ,Materials properties, Permittivity, Biocompatibility, Terahertz spectroscopy, Oxidation ,0103 physical sciences ,Adhesive ,0210 nano-technology ,Hybrid material ,Electrical conductor ,graphene-like - Abstract
Graphene-like (GL) layers and eumelanin-based graphene-like (EUGL) hybrids have been investigated through THz time domain spectroscopy. The interest in these materials lies on their peculiar chemical-physical properties: the former are conductive water stable materials, whereas the latter are biocompatible materials with good conductive and adhesive properties. Both exhibit promising optoelectronic and bioelectronic applications. We measured mixtures of GL layers or EUGL hybrids with KBr, shaped in pellets with uniform thickness, in order to circumvent problems related to sample inhomogeneity and roughness. A mean field theory was applied to extract direct information on permittivity and conductivity. Data have been carefully fitted through the Drude-Smith theory, confirming the conductive nature of the hybrid materials. The results show that EUGL hybrid-based devices can be promising for the next generation of printable bio-circuits.
- Published
- 2017
- Full Text
- View/download PDF