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Polydimethylsiloxane self-assembled whispering gallery mode microbottle resonator for ethanol sensing.
- Source :
-
Optical Materials . Sep2020, Vol. 107, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- Ethanol gas has been widely used in biomedicine, transportation, and chemical industry. However, when ethanol gas reaches a certain concentration in a closed space, it is possible to cause explosion. Based on this, a self-assembled whispering gallery mode (WGM) microbottle resonator for ethanol gas sensing is proposed and demonstrated in theory and experiment. The microbottle can be simply fabricated by dipping and pulling a single-mode fiber repeatedly in polydimethylsiloxane (PDMS) by a dip coater. The refractive index and volume of the PDMS will change with the concentration variation of the ethanol gas, resulting in a shift of the resonance wavelength. Experimental results demonstrate that the maximum sensitivity of the sensor to ethanol gas is 36.24 pm/ppm with good stability. Besides, the proposed sensor can behave simple preparation process, low cost, and compact size. • The microbottle can be simply fabricated by dipping and pulling an SMF repeatedly in PDMS. • The microbottle can serve as sensitive film to ethanol gas. • The central radius of the microbottle can be controlled by adjusting the fabrication process. • The ethanol gas sensor based on WGM resonator avoids the fall-off problem of the sensitive material. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09253467
- Volume :
- 107
- Database :
- Academic Search Index
- Journal :
- Optical Materials
- Publication Type :
- Academic Journal
- Accession number :
- 146248642
- Full Text :
- https://doi.org/10.1016/j.optmat.2020.110024