A Spectroscopic Technique for Local Temperature Measurement in a Micro-Optofluidic System
article
We present a spectroscopy technique to measure temperature locally in a polydimethylsiloxane micro-optofluidic chip with integrated optical fibers and minimal optical components. The device was fabricated in one step with fiber coupler grooves followed by the manual integration of the optical fibers. The experimental setup consists of a micro-optofluidic chip with a pair of optical fibers for excitation and fluorescence collection, a laser module, and a spectrometer. The laser module is coupled to one of the optical fibers to guide the light into the microchannel. The fluorescence signal is collected by a second integrated optical fiber placed orthogonally. A spectroscopy technique is used to measure the local temperature in a microchannel ( 500 μm wide and 125 μm in height) using Rhodamine B as a temperature indicator. It is shown that for a flow rate between 200 and 400 μL/min, the local temperature can be determined.
TNO Identifier
546209
ISSN
1530437X
Source
IEEE Sensors Journal, 16(13), pp. 5232-5235.
Publisher
Institute of Electrical and Electronics Engineers Inc.
Article nr.
7457613
Pages
5232-5235
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