On-chip thermal calibration with 8 CB liquid crystal of micro-thermal device.
A temperature sensor integrated on a micro-device for biological experiments requires affordable, rapid and easy thermal calibration. However, such calibration cannot usually be done directly under the microscope, a fact that impedes biological experiments. We present in this paper an inexpensive and rapid method to achieve thermal calibration directly under the microscope. It is based on the use of a thermotropic liquid crystal: the 4-n-octyl-4-cyanobiphenyl (8 CB) exhibiting an isothermal phase change at 313 K that can be monitored optically. We demonstrate the advantages of this method by calibrating the temperature sensor integrated onto a micro-device.
Gillot
Frédéric
F
Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Tokyo, Japan. gillot@iis.u-tokyo.ac.jp
Morin
Fabrice Olivier
FO
Arata
Hideyuki F
HF
Guégan
Régis
R
Tanaka
Hajime
H
Fujita
Hiroyuki
H
D002138:Calibration; D044085:Microfluidics / Q000295:instrumentation*; D013696:Temperature