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    Surface Science Blog You have only scratched the surface.

    ~ 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.

    ~ 3 min

    What is wettability?

    Wettability is the preference of a liquid to be in contact with a solid surrounded by another fluid (liquid or gas). Depending on the application, wettability can be wanted or not.

    ~ 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.

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