P2.3 Miniaturized System for Vapor Pressure Measurement using a Combination of Knudsen Cell and Nanobalance
- Event
- SMSI 2020
-
(did not take place because of Covid-19 virus pandemic) - Band
- SMSI 2020 - Sensors and Instrumentation
- Chapter
- P2 Sensors and Measurement Systems for Physical Quantities
- Author(s)
- M. Schulz, H. Fritze - Clausthal University of Technology, Goslar (Germany)
- Pages
- 230 - 231
- DOI
- 10.5162/SMSI2020/P2.3
- ISBN
- 978-3-9819376-2-6
- Price
- free
Abstract
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.