Surface modification enhancement frequency stability of tuning fork sensor

A practical surface modification method for the QTF sensors which is used as the sensing element for a digitalized measurement system, has been experimentally evaluated and demonstrated a 14% reduction of the overall deviation in the digitized resonance frequency measurement result. In recent years, digitized sensing measurement has become more popular in the research field of Quartz Tuning Fork (QTF) sensing technology due to the simplicity of its system structure compared to the conventional system. However, the inherent issue of noise interference for the highly sensitive sensing element is accompanied, raising the challenge of achieving reliable stability. The proposed method aims to effectively reduce the deviation in the measurement of highly sensitive QTF sensing elements in a digitized measurement system. The method utilising PTFE-based composition as coating material achieved an effective insulation for noise cancellation. The method can potentially be improved by adopting suitable post-treatment. Further analysis of the consistency in the repeatability was also carried out.