The structural, chemical, and electronic properties of epitaxial graphene films grown by thermal decomposition of the Si-face of a semi-insulating 6H-SiC substrate in an argon environment are studied by Raman spectroscopy, X-ray photoelectron spectroscopy and angle-resolved photoemission. It was demonstrated the possibility of fabrication of the gas and biosensors that is based on grown graphene films. The gas sensors are sufficiently sensitive to NO2 at low concentrations. The biosensor operation was checked using an immunochemical system comprising fluorescein dye and monoclonal anti fluorescein antibodies. The sensor detects fluorescein concentration on a level of 1-10 ng/mL and bovine serum albumin- fluorescein conjugate on a level of 1-5 ng/mL. The proposed device has good prospects for use for early diagnostics of various diseases.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 30 Jan 2018|
|MoE publication type||A4 Article in a conference publication|
|Event||International Conference Modern Nanotechnologies and Nanophotonics for Science and Industry - Suzdal, Russian Federation|
Duration: 9 Nov 2017 → 13 Nov 2017
Conference number: 6