Research laboratories across Australia, Europe, and North America face a recurring challenge: selecting the appropriate surface characterisation technology for nanoscale measurements. The decision between an Atomic Force Microscope (AFM), Scanning Electron Microscope (SEM), and Optical Profiler directly impacts data quality, … Continued
Researchers at leading universities and industrial laboratories worldwide face a common challenge in sample preparation: selecting the wrong process gas in the plasma cleaning process can compromise surface characterisation results, damage delicate substrates, or leave residual contamination that undermines months … Continued
Surfactants form ordered aggregates called micelles once their concentration exceeds a threshold value. The Critical Micelle Concentration (CMC) is the point where micelles start to form. CMC measurements are used to measure the surface tension of surfactant liquids. This can … Continued
Critical surface tension (γc) is estimated by extrapolating a Zisman plot, obtained by plotting the cosine of the contact angle of pure liquids on a solid surface to be studied, against the surface tension of the same series of liquids. … Continued
Sedimentation measurements are used to observe precipitation measurements for various batches of finely dispersed powders. This measurement method can be used to evaluate the sedimentation, wetting, and dispersibility of powders. Wetting property using initial dispersibility of powder: Use the sedimentation … Continued
Penetration measurements are used to analyse the penetration resistance of sediment or soft solids such as gels and pastes. The purpose of the test is to measure the upward force exerted by a soft solid on a penetrating object, and … Continued
When the dynamic contact angle values or parameters of a Washburn test need to be determined, it is necessary to know the density of the test liquids. If that is unknown, then by using the density Kit, which consists of … Continued
Wicking experiments are used to obtain weight pick-up information for porous solid samples. These experiments can also be used to identify unknown samples. If the sample under investigation is porous, it can be attached to the fixing device either with … Continued
The two most common types of surface tension measurements are Ring (Du Noüy) and Plate (Wilhelmy) methods. Du Noüy Ring method During measurement, a Platinum-Iridium ring is first dipped below the surface. The stage containing the beaker is slowly lowered … Continued
The DST series of analysers perform surface and interfacial tension measurements using the Wilhelmy Plate and Du Nuoy Ring methods. The DCA series of dynamic contact angle analysers are extremely sensitive instruments offering a wide range of measurements for surface … Continued