The PolySense team has just published a new article on Applied Physics Letters reporting on a highly sensitive trace gas sensor based on light-induced thermoelastic spectroscopy (LITES) and a custom quartz tuning fork (QTF). A minimum detection limit of 325 ppb was achieved at an integration time of 1 s, nearly one order of magnitude better with respect to the value obtained with a standard 32.768 kHz under the same experimental conditions.
The following link provide access to the article.
http://polysense.poliba.it/wp-content/uploads/2020/01/111_QEPTS_APL_2020.pdf
