Eur. Phys. J. Appl. Phys.
Volume 56, Number 1, October 2011
|Number of page(s)||3|
|Section||Biophysics and Biosensors|
|Published online||28 September 2011|
Scanning calorimeter for microliter-scaled samples based on lithium tantalite pyroelectric bulk material
Institut d’Électronique du Sud, IES, Université Montpellier II, UMR CNRS 5214, Place Eugène Bataillon, 34095 Montpellier, France
2 Laboratoire de Physique Appliquée (LPA), Département de Physique, Université Libanaise, Faculté des Sciences II, 90656 Jdeidet, Lebanon
3 École supérieure d’ingénieurs de Beyrouth, Campus des Sciences et Technologies, Mar Roukoz, B.P. 1514, Riad El Solh, Beyrouth 1107 2050, Lebanon
a e-mail: email@example.com
Revised: 3 August 2011
Accepted: 5 August 2011
Published online: 28 September 2011
We report the design and operation of a differential scanning calorimeter (DSC) for use with either solid or liquid samples with a volume down to a few microliters. The calorimeter is based on lithium tantalite pyroelectric bulk material used to perceive the energy involved in any phase transformation process. The device consists of a pyroelectric substrate, a thermoelectric cooler and a heat dissipation system. Its effectiveness is demonstrated by scanning the freezing and melting phase shifts of water droplets, ranging from 1 to 2 μl. The latent heat of fusion and solidification were measured to within 3% of the bulk value.
© EDP Sciences, 2011
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