~ 3 min

Why is the resonance frequency of a QCM sensor 5MHz?

The fundamental resonance frequency of QCM-sensors is often 5MHz. Learn about the theory behind the number.

~ 11 min

Why it is useful to use multiple overtones in QCM measurements

Read about why it is possible to gain valuable information from a viscoelastic sample by monitoring multiple overtones in QCM measurements.

~ 7 min

What does the dissipation factor in QCM-D tell us?

The D-factor provides information that is complementary to the frequency response. Read about how it can be understood and what information it reveals.

~ 3 min

Time-resolved analysis of surfactant-surface interaction

Surfactants are key components in many products and processes where the surfactant-surface interaction dynamic could be critical. Here we show how the surfactant interaction with surfaces can be analyzed in a time-resolved manner at the nanoscale.

~ 3 min

Polymer brush swelling and collapse - characterization with QCM-D

Polymer brushes, polyelectrolyte multilayers and hydrogels are typically used to achieve desirable properties. Key parameters influencing these properties are layer conformation and the degree of hydration. Here we show a straightforward way to measure polymer brush swelling and collapse.

~ 4 min

How to measure crosslinking and collapse with QCM-D

Polymers and polyelectrolytes of various conformations are used in many applications where there is a need to tailor the interfacial properties to promote a certain interaction with the surrounding environment. Here we show how polymer layer crosslinking and collapse can be characterized.

~ 5 min

QCM-D mass and thickness - How to measure

Read about how molecule-surface interaction processes and binding can be characterized by QCM-D via time-resolved measurements of mass and thickness.

< 7 min

What is a Viscoelastic material?

Viscoelasticity is a quality involving both viscous and elastic properties at the same time. QCM-D is a surface-sensitive technology that can characterize the viscoelastic properties of thin films.

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