Any weighing device needs to provide repeatability and accuracy of measurement. Repeatability is the instrument's ability to display the same value for a given sample at different times. Accuracy is the instrument's ability to show the true weight of a sample within the repeatability of the instrument. In order to maintain these properties, an instrument has to be calibrated. This is usually performed by adjusting the instrument give the correct reading for a known standard weight (referenced to NIST). It is the precision of the microbalance that distinguishes it from other weighing devices.
Quartz crystal microbalance is a very sensitive mass deposition sensor based on the piezoelectric properties of the quartz crystal. This technique uses the changes in resonance frequency of the crystal to measure the mass on the surface because the resonance frequency is highly dependent on any changes of the crystal mass. A quartz crystal microbalance is capable of measuring mass deposition down to 0.1 nanograms.
Vacuum Microbalance and Thermoanalytical Techniques: 21-24 July 2009, Kazimierz Dolny, Poland.(Where 2B & Y: Announcement of conferences, symposia, workshops, meetings, and other upcoming activities)(Conference news)
Mar 01, 2009; The 32nd International Conference on Vacuum Microbalance and Thermoanalytical Techniques (IVMTTC32) will cover all aspects...
Application of a Quartz Crystal Microbalance (QCM) Twin Sensor for Selective Label-free Immunoassay to Simultaneous Antigen-antibody Reactions
Mar 24, 2012; Abstract: In this work a 30 MHz quartz crystal Microbalance (QCM) twin sensor system was used for simultaneous monitoring...