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- Title
Scanning calorimeter for microliter-scaled samples based on lithium tantalite pyroelectric bulk material.
- Authors
Youssef, S.; Podlecki, J.; Habchi, R.; Brouche, M.; Al Asmar, R.; Foucaran, A.
- 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.
- Subjects
DIFFERENTIAL scanning calorimetry; LITHIUM tantalate; PYROELECTRICITY; ENERGY dissipation; FUSION (Phase transformation)
- Publication
European Physical Journal - Applied Physics, 2011, Vol 56, Issue 1, pN.PAG
- ISSN
1286-0042
- Publication type
Article
- DOI
10.1051/epjap/2011110075