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Thermal Emissivity‐Based Chemical Spectroscopy through Evanescent Tunneling
Author(s) -
Poole Zsolt L.,
Ohodnicki Paul R.
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201505758
Subject(s) - emissivity , materials science , quantum tunnelling , spectroscopy , hydrogen , optoelectronics , nanotechnology , optics , chemistry , physics , organic chemistry , quantum mechanics
A new spectroscopic technique is presented , with which environmentalchemistry‐induced thermal emissivity changes of thin films are extracted with high isolation through evanescent tunneling. With this method the hydrogen‐induced emissivity changes of films of TiO 2 , Pd–TiO 2 , and Au–TiO 2 , with properties of high conductivity, hydrogen chemisorption, and plasmonic activity, are characterized in the UV–vis and NIR wavelength ranges, at 1073 K.