P2.3 Miniaturized System for Vapor Pressure Measurement using a Combination of Knudsen Cell and Nanobalance
- SMSI 2020
(did not take place because of Covid-19 virus pandemic)
- SMSI 2020 - Sensors and Instrumentation
- P2 Sensors and Measurement Systems for Physical Quantities
- M. Schulz, H. Fritze - Clausthal University of Technology, Goslar (Germany)
- 230 - 231
A miniaturized system for measurement of vapor pressure is presented. It consists of a Knudsen cell and a langasite based resonant nanobalance. The molecular beam from the cell hits the surface of the nanobalance and forms a thin film which results in an increase of the mass and thus in a shift of the resonance frequency. The mass sensitivity of the high-temperature stable nanobalance enables even detection of single monolayers of deposited material. The resonance data is analyzed using impedance spectroscopy as well as frequency counting techniques.