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    Surface Science Blog You have only scratched the surface.

    < 3 min

    How Nouryon ranks detergent performance when the traditional tools fail

    When, Nouryon (former AkzoNobel speciality chemicals), launched a new surfactant with a good dermatological profile, they wanted to prove superior performance vs competitive benchmarks. As the current test methods were not sensitive enough, they turned to an analysis using QSense cleaning profile.

    ~ 3 min

    How to study the wettability of the contact lens?

    Contact lens should support a continuous tear film for optimum visual clarity. It should also resist the sorption of tear components as deposition can lead to decreased visual clarity and discomfort. Wettability of the surface affects both the tear film as well as biocompatibility of the lens.

    < 3 min

    Model membranes - How to characterize with QCM-D

    Model membranes are used in various fields of research. Read about how these lipid membranes can be characterized using QSense QCM-D technology.

    ~ 3 min

    Which surface free energy method should be used?

    You might find it confusing when seeing all the different methods for surface free energy calculations. As surface free energy can give you more information on your surface compared to the contact angle measurements alone, it is time well spent to study the different theories more in detailed.

    ~ 2 min

    Assess the cleaning efficiency as a function of detergent concentration within an hour

    What is the optimal surfactant concentration to use in a cleaning formulation? Here we show how the cleaning efficiency as a function of detergent concentration can be assessed within an hour.

    ~ 5 min

    Effect of solid wettability on oil displacement and liberation from host rock in water

    Unconventional oils, such as heavy oil, extra heavy oil, and bitumen, normally exist tightly on host solids such as rocks, sands and clay minerals. Successful liberation of unconventional oil from solids is essential for effective recovery.

    ~ 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.

    < 3 min

    Six measurement techniques for nanoparticle size characterization

    Nanoparticle size is one of the key parameters that are relevant to characterize in nanoparticle suspensions. Here we list six different methods that you can use to characterize the nanoparticle size.

    > 2 min

    Why is wettability important in enhanced oil recovery?

    In enhanced oil recovery wettability plays an important role as that determines the interactions between the solid (rock) and the liquids in the reservoirs (crude oil, brine). Wettability has been recognized as one of the key parameters controlling the remaining oil-in-place.

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