Biolin

Attension® offers leading contact angle and surface tension solutions for industrial quality control and R&D as well as for academic research. The core of Attension solutions is a combination of easy-to-use, smart instrumentation with broad surface science capabilities.

Measurements

• Static contact angle
• Dynamic contact angle
• Roll-off angle
• Surface free energy (SFE)
• Surface tension
• Interfacial tension
• Batch contact angle
• Roughness corrected contact angle
• Interfacial rheology (viscoelasticity)

Technology

An optical tensiometer records drop images and analyzes the drop shape automatically. The drop shape is a function of the surface tension of the liquid, gravity and the density. On a solid, the drop shape and the contact angle also depends on the properties of the solid (e.g. surface free energy, topography). The captured image is analyzed with a drop profile fitting method in order to determine contact angle and surface tension. Surface free energy can be calculated by performing contact angle measurements with several known liquids.

As an optical method, the measurement precision of optical tensiometers depends on the quality of the pictures and the analysis software. Attension Optical Tensiometers utilize a high quality monochromatic cold LED light source to minimize undesirable sample evaporation. Image quality is guaranteed by a high-resolution digital camera, quality optics and the accuracy of the drop fitting method.

Measurements

• Surface tension
• Interfacial tension
• Critical Micelle Concentration
• Dynamic contact angle
• Surface free energy
• Powder wettability
• Density
• Sedimentation
• Adhesion force

Full Automation for High Precision

The systems can be fully automated, avoiding user variation and saving you time. Highly precise measurements can be performed easily with just one click.

Optimized Yet Versatile

Sigma 700 and 701 have full support of all measurement modes, making them adaptable to all measurements and applications. However, they are also optimized for different experiments. Sigma 700 is the optimal choice especially for powder wettability and contact angle experiments. Sigma 701 is a great choice for surface tension and interfacial tension experiments due to its very high sensitivity.

Sophisticated Software

The OneAttension Software provide all measurement modes, full automation, easy measurement setup and live results. But above all, it is really user friendly and intuitive.

QSense® is the world-leading, premium QCM-D solution for nanoscale tracking of interactions at surfaces and interfaces. It can provide you with unique, reproducible, in-depth data with high productivity and ease of use along the way.

This enables a fundamental understanding of processes, an early indication of real-life outcome and the ability to optimize products and processes for authentic conditions. By investing in a QSense instrument you put yourself and your team at the forefront of scientific progress and technological innovation.