Regensburg 2004 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 16: POSTER: Computational Physics, Complex Systems

CPP 16.26: Poster

Tuesday, March 9, 2004, 17:00–19:00, B

Calorimetry on thin films — •Heiko Huth — Universität Rostock, Fachbereich Physik, Universitätsplatz 3, 18051 Rostock

There is an increasing interest in the behavior of confined geometries as small samples and thin films in the last years. Interesting questions are the influence on glass transition or the change in crystallization behavior in the nm range. Beside dielectric methods and structural investigations, calorimetric data as heat capacity are of interest in such systems. For small sample mass as thin films in the µm…nm range we run into problems with the standard calorimetric methods like commercial DSC because of the limited sensitivity. One method to solve these problems are thin film calorimeter used by different authors. These systems are developed to achieve fast heating rates not possible with usual commercial DSC. To realize this, small samples and sensors are used. This idea can also be applied for measuring frequency dependent heat capacity of small samples. We present a measuring system based on thin film sensors which makes it possible to measure heat capacity of thin films down to the nm range with sample mass in the µg range or below. First results are presented.