Sculptured thin film Šolc filters for optical sensing of gas concentration
Ertekin, E.; Lakhtakia, A.; Ertekin E.; Computational & Theoretical Materials Sciences Group (CATMAS), Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA 16802–1401, USA; Lakhtakia A.; Computational & Theoretical Materials Sciences Group (CATMAS), Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA 16802–1401, USA
Журнал:
The European Physical Journal Applied Physics
Дата:
1999
Аннотация:
The viability of sculptured thin film (STF) implementations of Šolc fan and folded filters for optical detection and determination of gas concentration is established. A nanoscopic–to–continuum model is devised for predicting the electromagnetic (optical) response of a STF Šolc filter whose void regions are filled with a chemically non–reacting gas. Ultra–narrow band–pass features in the transmission spectrum are shown to shift with the gas concentration.
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