Regensburg 2010 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 32: Posters: Physics of Cells
BP 32.46: Poster
Donnerstag, 25. März 2010, 17:15–20:00, Poster B1
Quantitative temperature analysis by micro-thermo capillaries for biological systems — •Michael Stührenberg1, Rene Heimbuch1, Miriam Giesguth2, Karl-Josef Dietz2, Simone Herth1, and Günter Reiss1 — 1Fakultät für Physik, Universität Bielefeld — 2Fakultät für Biologie, Universität Bielefeld
Thermocouples based on the Seebeck effect between two metals are widely used for various applications. However, these thermocouples usually consist of wires of hundreds of nanometer thickness measuring the temperature in large objects and voluminous bulk phases. In a new setup, the two metals for the thermocouple are sputtered onto a glass micro capillary with an outer diameter of about 450 nm leading to very small contact and measurement areas. These thermo capillaries can be used in a micro manipulation system to measure the temperature in small tissues, single cells, or other biological objects, e.g. leaf epidermis and trichomes. This poster reports the fabrication of micro-thermo capillaries and demonstrates its calibration and use for quantitative measurements.