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    Surface Science Blog You have only scratched the surface.

    ~ 3 min

    What is graphene oxide?

    Graphene oxide (GO) is the oxidized form of graphene. Graphene oxide is easy to process since it is dispersible in water and other solvents. Due to the oxygen in its lattice graphene oxide is not conductive, but it can be reduced to graphene by chemical methods.

    < 3 min

    What does self-cleaning mean?

    A self-cleaning surface is any surface with the ability to readily remove any dirt or bacteria on it. Self-cleaning surfaces can be divided into three different categories; superhydrophilic, photocatalytic and superhydrophobic.

    2 min

    How to characterize nanoparticle suspensions

    Nanoparticle suspensions are complex systems and their characterization includes several parameters such as size, concentration in solution, shape, surface charge and chemical composition. Here we provide a list of methods that could be used to characterize nanoparticle suspensions.

    > 2 min

    What is surface tension?

    The net force, which effectively aims to keep the liquid together, is called surface tension.

    ~ 3 min

    What are the differences between ASTM D971 and IEC 62961 standards?

    The new standard IEC 62961 for the transformer oil quality testing has just been released. In this blog post, the main differences between the old ASTM D971 and the new IEC 62961 standard are discussed.

    > 3 min

    How to measure contact angle hysteresis?

    Contact angle hysteresis can be measured with optical (needle and tilting methods) and force (Wilhelmy method) tensiometers.

    ~ 1 min

    Are you prepared for the new transformer oil quality standard?

    Interfacial tension of insulating liquids against water has been used for a long time as a criterion for aging evaluation. The latest revision for the ASTM D971 standard dates back to 2012. The new IEC standard is about the be released to improve the accuracy of the method.

    < 4 min

    How to deposit nanoparticles?

    There are several ways to deposit nanoparticles. Most methods are able to coat the surface, but for controlled monolayer deposition, more sophisticated methods are needed.

    ~ 4 min

    Characterization of polyelectrolyte multilayer build-up and structure

    The versatility of polyelectrolyte multilayers, PEMs, is high, which makes them interesting for e.g. biomedical applications. The functionality is largely determined by the layer properties, which needs to be understood to be tailored. Here, we show how PEMs can be characterized with QCM-D.

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