DataPhysics Instruments has established a worldwide reputation for the provision of high quality and innovative measurement equipment within the field of surface and interfacial science. With more than 2500 installations across a diverse range of laboratories, DataPhysics Instruments is regarded as a reliable and professional partner, providing specialised products and individual advice. And the customer base continues to grow, year on year.
The foundations for this success story were laid in August 1997 when original shareholders, Dr. Ulrich Busch, Torsten Holz and Horst Rau, started their business, with seven employees, in Filderstadt near Stuttgart, Germany. The vision of the founders was clear: they would develop highly beneficial, trendsetting measuring devices, sold and supported worldwide, with a highly qualified team of scientists and engineers, working in close cooperation with those investing in the technology. The commitment, enthusiasm, and creativity of the small team meant that after just nine months the first optical contact angle measuring instrument could be introduced at Analytica in 1998 – a major success!
The optical analysis of drops that hang from a dosing needle or are placed on a solid surface facilitates the determination of different surface and interfacial parameters. The contact angle that a liquid drop establishes on a solid surface characterises the solid’s wetting behaviour with said liquid.
Having measured the contact angles of multiple test liquids the surface energy of the solid can be determined and the latter can be used to calculate the work of adhesion for different liquids.
The reliable and experimentally robust measurement of the contact angle aids on the development of surface coatings, composite materials, paints and varnishes or cleaning agents. In short: the measurement of contact angle helps in all situations where solids and liquids meet and advantage is to be gained by the control of wetting and adhesion properties.
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