Surface Science Blog You have only scratched the surface.

Susanna Laurén

Susanna Laurén

Susanna is an Application Scientist at Biolin Scientific. In her PhD thesis, she developed fabrication methods for a new type of inorganic-organic polymers. Microfabricated polymer chips were utilized as tool for biomolecule separation in analytical chemistry.

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< 3 min

How to measure contact angle hysteresis and roll-off angle by tilting method?

Contact angle hysteresis is often measured with so-called tilting cradle or plate method. The measurement can be done either manually or automatically.

< 6 min

Enhanced oil recovery: How to measure the wettability of carbonate reservoir core?

Most commonly used methods to study reservoir wettability are Amott-Harvey, USBM, and sessile drop contact angle.

> 2 min

Automated dynamic contact angle measurement with the needle method

Dynamic contact angle measurements with the needle method has been automated for reliable and repeatable results.

> 2 min

How to alter wettability in carbonate reservoir?

Carbonate reservoirs are characterized as intermediate to oil- wet. Altering the wettability of the carbonates has been proposed as one of the main mechanisms for enhanced oil recovery.

< 3 min

Graphene oxide for biosensors

Biosensing is a crucial part of human well-being as early detection of diseases requires highly sensitive and selective methods. New materials, such as graphene oxide, are evaluated for improved biosensor performance.

~ 2 min

3 examples of how to utilize high pressure tensiometer

Different enhanced oil recovery methods are used to alter the wettability of the reservoir rock. To study the wettability alteration at the reservoir conditions, an instrument where the measurements can be done at high pressures and temperatures are needed.

~ 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.

~ 2 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.

> 1 min

How to check the transformer oil quality based on ASTM D971 and IEC 62961 standards?

Regular inspection of the transformer oil quality is important to ensure the operation of the transformer. Several methods are available, but the newly released IEC 62691 standard is based on the interfacial tension measurement between water and the transformer oil.

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