This paper presents a ferroelectric polymer-based temperature sensor designed for microfluidic devices. The integration of the sensor into a system-on-a-chip platform facilitates quick monitoring of localized temperature of a biological fluid, avoiding errors in the evaluation of thermal evolution of the fluid during analysis. The contact temperature sensor is fabricated by combining a thin pyroelectric film together with an infrared source, which stimulates the active element located on the top of the microfluidic channel. An experimental setup was assembled to validate the analytical model and to characterize the response rate of the device. The evaluation procedure and the operating range of the temperature also make this device suitable for applications where the localized temperature monitoring of biological samples is necessary. Additionally, ease of integration with standard microfluidic devices makes the proposed sensor an attractive option for in situ analysis of biological fluids.
Salvatore A. Pullano 1,2,* , Ifana Mahbub 2, Syed K. Islam 2 and Antonino S. Fiorillo 1
1 Department of Health Sciences, University Magna Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
2 Department of Electrical Engineering and Computer Science, University of Tennessee, 1520 Middle Drive, Knoxville, TN 37996, USA
* Author to whom correspondence should be addressed.
Received: 5 January 2017 / Revised: 27 March 2017 / Accepted: 11 April 2017 / Published: 13 April 2017
(This article belongs to the Special Issue Piezoelectric Micro- and Nano-Devices)