|
Semiconductor Physics, Quantum Electronics & Optoelectronics. 2011. V. 14, N 3. P. 313-320.
Multi-element gas sensor based on surface plasmon resonance:
recognition of alcohols by using calixarene films
1V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine,
41, prospect Nauki, 03028 Kiev, Ukraine, khristosenko@ukr.net
Abstract.
This work is devoted to development of a multi-element gas sensor based on
surface plasmon resonance (SPR) to recognize some alcohols. As sensitive layers capable
to change their optical properties when interacting with volatile alcohol molecules, we
investigated bulk-porous sorbents – calixarenes (tret-butyl-calix[4,6,8]arenes (С[4]А,
С[6]А, С[8]А), tetra-amyl-calix[4] resorchinolaren (C[4]Re). Each calixarene was
studied to obtain its kinetic concentration SPR characteristics for interaction with
ethanol, isopropanol and penthanol vapors. To realize SPR measurements, the sensitive
calixarene films (d ∼ 100 nm) were deposited on a gold film (d ∼ 45 nm) by using the
method of thermal evaporation in vacuum. Experimental multi-element SPR device was
designed as based on the analysis of TV image obtained for the studied array of
calixarene films and tested using saturated ethanol vapors.
Keywords: Surface plasmon resonance, imaging gas sensor, sensor array, calixarene
films, alcohols.
| ||