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Article Dans Une Revue European Physical Journal: Applied Physics Année : 2011

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

Résumé

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 l. The latent heat of fusion and solidification were measured to within 3% of the bulk value.

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Dates et versions

hal-00736282 , version 1 (28-09-2012)

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S. Youssef, J. Podlecki, R. Habchi, M. Brouche, R. Al Asmar, et al.. Scanning calorimeter for microliter-scaled samples based on lithium tantalite pyroelectric bulk material. European Physical Journal: Applied Physics, 2011, 56 (1), pp.11201. ⟨10.1051/epjap/2011110075⟩. ⟨hal-00736282⟩
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