期刊
IEEE ELECTRON DEVICE LETTERS
卷 43, 期 12, 页码 2169-2172出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2022.3214830
关键词
Viscosity; Sensors; Optical devices; Photoconductivity; Liquids; Volume measurement; Detectors; GaN; optical device; viscosity sensor
资金
- National Natural Science Foundation of China [62004088, 12074170]
- Shenzhen Natural Science Foundation Stability Support Program [20200925160044004]
In this letter, a miniature viscosity sensor based on GaN-on-sapphire optical device integrated with an inclined flow channel is demonstrated. The monolithic device, consisting of a pair of GaN diodes responsible for light emission and detection, can monitor droplet sliding. The proposed elegant design of a few centimeters in size is capable of distinguishing the liquid viscosities from 2 to 600 mPa center dot s in tens of seconds. The proposed optical sensor exhibits attractive features, such as compactness, low cost, ease of operation, and small liquid volume required, making it suitable for practical applications in liquid viscosity measurement.
In this letter, we demonstrate a miniature viscosity sensor based on GaN-on-sapphire optical device integrated with an inclined flow channel. The monolithic device, consisting of a pair of GaN diodes responsible for light emission and detection, can monitor droplet sliding. Without the need for external optical components, the proposed elegant design of a few centimeters in size is capable of distinguishing the liquid viscosities from 2 to 600 mPa center dot s in tens of seconds. The proposed optical sensor exhibits attractive features, such as compactness, low cost, ease of operation, and small liquid volume required, making it suitable for practical applications in liquid viscosity measurement.
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