Berlin 2012 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MM: Fachverband Metall- und Materialphysik

MM 17: Poster Session

MM 17.11: Poster

Montag, 26. März 2012, 17:00–19:00, Poster B

Design and Operation of a Nano-Calorimeter for high Sensitive and Fast heating rates measurements — •Mostafa Mohamed, Joachim Bokeloh, Tae-Eun Song, and Gerhard Wilde — Institute of Materials Physics, Westfalische Wilhelms University Muenster,Muenster,48148,Germany

A thin-film differential scanning calorimetric (TDSC) technique has been developed based on Silicon-Nitride (Si-Nx) membranes, for use as a Nano-calorimeter detector in high-sensitivity measurements. The Nano-calorimeter is specifically designed to determine the thermal properties and heat capacity of nano-structured materials, with very high sensitivity values and fast heating rates (104 K/S). The (Si-Nx) membrane was used as a low thermal mass mechanical support structure. The measurements of the system are accomplished via electrodes of Pt or Au that are used for resistive heating and resistive temperature measurement simultaneously. The method shall be applied first to measure the melting of various amounts of pure evaporated metal thin films.