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Scanning calorimeter for microliter-scaled samples based on lithium tantalite pyroelectric bulk material

Published online by Cambridge University Press:  28 September 2011

S. Youssef ,
J. Podlecki ,
R. Habchi ,
M. Brouche ,
R. Al Asmar  and
A. Foucaran
S. Youssef*
Affiliation:
Institut d’Électronique du Sud, IES, Université Montpellier II, UMR CNRS 5214, Place Eugène Bataillon, 34095 Montpellier, France Laboratoire de Physique Appliquée (LPA), Département de Physique, Université Libanaise, Faculté des Sciences II, 90656 Jdeidet, Lebanon École supérieure d’ingénieurs de Beyrouth, Campus des Sciences et Technologies, Mar Roukoz, B.P. 1514, Riad El Solh, Beyrouth 1107 2050, Lebanon
J. Podlecki
Affiliation:
Institut d’Électronique du Sud, IES, Université Montpellier II, UMR CNRS 5214, Place Eugène Bataillon, 34095 Montpellier, France
R. Habchi
Affiliation:
Laboratoire de Physique Appliquée (LPA), Département de Physique, Université Libanaise, Faculté des Sciences II, 90656 Jdeidet, Lebanon
M. Brouche
Affiliation:
École supérieure d’ingénieurs de Beyrouth, Campus des Sciences et Technologies, Mar Roukoz, B.P. 1514, Riad El Solh, Beyrouth 1107 2050, Lebanon
R. Al Asmar
Affiliation:
Laboratoire de Physique Appliquée (LPA), Département de Physique, Université Libanaise, Faculté des Sciences II, 90656 Jdeidet, Lebanon
A. Foucaran
Affiliation:
Institut d’Électronique du Sud, IES, Université Montpellier II, UMR CNRS 5214, Place Eugène Bataillon, 34095 Montpellier, France
*
ae-mail: [email protected]
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Abstract

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.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 56 , Issue 1: Topical Issue: 5th Colloquium Interdisciplinary in Instrumentation (C2I) 2010 , October 2011 , 11201
Copyright
© EDP Sciences, 2011

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