Open-Source Quartz Crystal Microbalance
The sensor is a surface sensitive quartz crystal capable of measuring phenomena at molecular scale. It works in vacuum, air and liquid environments. The QCM sensor is based on the piezoelectric properties of the quartz crystal. The application of an alternating current causes the mechanical vibration of the quartz crystal in the MHz range. The QCM technique measures the variations in quartz frequency for measuring the mass variations on its surface.
