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Title: Highly sensitive pseudo-differential ac-nanocalorimeter for the study of the glass transition

We present a nanocalorimeter designed for the measurement of the dynamic heat capacity of thin films. The microfabricated sensor, the thermal conditioning of the sensor, as well as the highly stable and low noise electronic chain allow measurements of the real and imaginary parts of the complex specific heat with a resolution Δ C/C of about 10{sup −5}. The performances of this quasi-differential nanocalorimeter were tested on a model of polymeric glass-former, the polyvinyl acetate (PVAc). The high stability and low noise of the device are essential for accurate studies on non-equilibrium slow relaxing systems such as glasses.
Authors:
 [1] ;  [2] ;  [3] ; ;  [4] ;  [5] ; ; ;  [1] ;  [2]
  1. Institut NÉEL, CNRS, 25 Avenue des Martyrs, F-38042 Grenoble (France)
  2. (France)
  3. (LIMAT), Université Hassan II de Casablanca, Faculté des Sciences Ben M’Sik, Casablanca Maroc (Morocco)
  4. Laboratoire d’Ingénierie et des Matériaux (LIMAT), Université Hassan II de Casablanca, Faculté des Sciences Ben M’Sik, Casablanca Maroc (Morocco)
  5. Laboratoire de Physique de la Matière Condensée (LPMC), Université Hassan II de Casablanca, Faculté des Sciences Ben M’Sik, Casablanca Maroc (Morocco)
Publication Date:
OSTI Identifier:
22482620
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CALORIMETERS; DESIGN; EQUILIBRIUM; EQUIPMENT; GLASS; NOISE; POLYVINYL ACETATE; RESOLUTION; SENSORS; SPECIFIC HEAT; THIN FILMS