Quartz Crystal Microbalance

Quartz crystal microbalance with dissipation monitoring system (QCM-D) measures change of mass and viscoelasity of material on the surface in real time. Frequency and dissipation are monitored simultaneously and give information about mass and rigidity. Adsorption/desorption, chemical reaction, and structural change on the surface in liquid can be analyzed in nanogram sensitivity.

Applications:

• Biomaterials
• Energy
• Environmental
• Cell & Molecular Biology
• Biomolecules (DNA, Lipids, and Proteins), surfactants, nanoparticles and polymers

Options:

• Q-sense E1/E4
• Flow module
• Window module
• Open module
• Electrochemistry module

Specifications:

• Number of sensors 1(E1), 4(E4)
• Volume above each sensor ~ 40μl
• Minimum sample volume ~ 300μl
• Working temperature 18 to 45 °C, controlled via the software, stability ± 0.02 K
• Cleaning All parts exposed to liquid can be removed and cleaned in e.g. ultrasound bath
• Sensor crystals 5 MHz, 14 mm diameter, polished, AT-cut, gold electrodes
• Frequency range 1-70 MHz (up to the 13th overtone, 65 MHz for a 5 MHz crystal)
• Maximum time resolution, 1 frequency up to 200 data points per second
• Maximum mass sensitivity in liquid ~ 0.5 ng/cm²(5pg/mm²)
• Normal mass sensitivity in liquid ~ 1.8 ng/cm²(18pg/mm²)
• Maximum dissipation sensitivity in liquid ~ 0.04 x 10^-6
• Normal dissipation sensitivity in liquid ~ 0.1 x 10-⁶
• Typical noise peak to peak (RMS) in liquid ~ 0.16 Hz (0.04 Hz)

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