Volume-9 (04/2005)

Landing on the Point or Characterisation of Microscopically Small Surfaces by Means of Contact Angle Measurement

Please have a brief look at a full stop mark in a newspaper text. Can you imagine dosing 20 to 30 drops on an area this size and measure the contact angle? Or imagine the tip of a nail – even on this microscopically small area tiny little drops can be dosed and measured. Such measurements are currently possible with the innovative micro-dosing system of the contact angle measuring system DSA100M, which is able to dose precisely and on a point, very small drops down to a few picoliters. The following experiments show the potential of the new Micro-Dosing System DSA100M and may inspire you to new ideas.

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The role of surfactants, adhesion energy and interfacial tensions in fibre coating applications

 
Fibres play an important role for all of us whether it be in the form of a consumer product, or an industrial process used to produce an item that effects us in our daily lives. These range from the fibres used in composite materials, woven & non-woven technical textiles to fibre optic cables and reinforced concrete structures. The surface properties of such fibres play a key role in delivering the performance required by a particular process or final product.

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