Quartz Crystal Microbalance used for Characterisation of thin films
Post author: Karyn Jarvis. Last update: 22/09/2015 at 4:28 pm by Karyn Jarvis.
Manufacturer: Biolin Scientific, Q-Sense E4
QCM is a technique used to analyse surface phenomena such as thin film formation, interactions and reactions. The QCM sensor is sandwiched between a pair of electrodes and is oscillated at its resonance frequency by alternating voltage. Its resonance frequency is dependent on the total mass of the sensor and the layers attached to the sensor. The frequency of the sensor decreases when mass is attached to the sensor. The QCM sensor can be coated with a variety of films to investigate their interactions with molecules in solution. QCM is commonly used to measure the interactions of proteins, polymers, surfactants and cells with surfaces in solution.
Benefits of the Quartz Crystal Microbalance (QCM)
Applications in kinetic studies of self assembly processes, thin film formation, protein and drug interactions; and viscoelastic behaviours of thin films and adsorbed/immobilised layers.
Technical features and specifications
Number of sensors 4
Volume above each sensor ~ 40 μl
Minimum sample volume ~ 300 μl
Working temperature 15 to 65°C, (software controlled)
Typical flow rates 50-200 μl/min
Frequency and Dissipation analysis