Ultra-fast Hygrometer based on U-shaped Optical Microfiber with Nanoporous Polyelectrolyte Coating.

Chen, George Y; Wu, Xuan; Kang, Yvonne Qiongyue; Yu, Li; Monro, Tanya M; Lancaster, David G; Liu, Xiaokong; Xu, Haolan

Chen, George Y; Wu, Xuan; Kang, Yvonne Qiongyue; Yu, Li; Monro, Tanya M; Lancaster, David G; Liu, Xiaokong; Xu, Haolan.

Afiliación

Chen GY; Laser Physics and Photonic Devices Laboratories, School of Engineering, University of South Australia, Mawson Lakes, South Australia, 5095, Australia. george.chen@unisa.edu.au.
Wu X; Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.
Kang YQ; Laser Physics and Photonic Devices Laboratories, School of Engineering, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.
Yu L; Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
Monro TM; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
Lancaster DG; Laser Physics and Photonic Devices Laboratories, School of Engineering, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.
Liu X; Laser Physics and Photonic Devices Laboratories, School of Engineering, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.
Xu H; Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia. xiaokong.liu@unisa.edu.au.

Sci Rep ; 7(1): 7943, 2017 08 11.

Article en En | MEDLINE | ID: mdl-28801678

ABSTRACT

ABSTRACT

Real-time measurement of the relative humidity of air has applications ranging from process control to safety. By using a microfiber form-factor, we demonstrate a miniature and fast-response hygrometer with the shortest-ever response time (3 ms). The sensor head consists of an optical microfiber of 10 µm diameter and 2 mm length configured to form a compact U-shaped probe, and functionalized with a polyelectrolyte multilayer coating of 1.0 bilayer. The sensing mechanism is primarily water-absorption-based optical loss. We have measured a response time of 3 ms and a recovery time of 36 ms. The sensitivity is as high as 0.4%/%RH, and the detection limit is as low as 1.6%RH. The maximum relative humidity is 99%RH, before reaching a recoverable dew-point.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2017 Tipo del documento: Article País de afiliación: Australia

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