Drop Shape Analyzer

DSA30M

Precision wettability analysis of microscopically small surfaces

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The wettability of very small surfaces can have a great influence on product quality, e.g. for contact points on circuit boards or in microfluidics. The DSA30M Drop Shape Analyzer enables drops in the picoliter range to be accurately positioned and analyzed. The resulting contact angle is exactly the information you need for optimizing wetting and coating processes on very small surfaces.

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Applications

Investigation of synthetic and natural fibers for composites
Wettability of contact points in microelectronics
Optimization and development of hair care products
Wettability of biochips
Micromechanical components, e.g. in watches
Microfluidics

Measuring methods

Contact angle of a drop on a solid surface
Surface free energy of a solid using contact angle data

Measuring results

Contact angle
Surface free energy
Work of adhesion between solid and liquid
Interfacial tension between solid and liquid
Spreading coefficient between solid and liquid

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The DSA30M allows drops to be placed with pinpoint accuracy between the lens and camera.

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Perfectly equipped for microdrop analysis

The available dosing units for 20 or 60 picoliter minimum volume dispense microscopically small drops of test liquid onto the sample. The fine positioning of the dosing unit and the sample allows precise placement of the drops. The dosing unit for 20 picoliters can also be heated.

The standard equipment for water dosing can be expanded to include modules for diiodomethane and glycerine in order to determine the surface free energy with contact angles of two or three liquids. Together with other evaluation options, this result provides important information for adhesion, e.g. of fiber coatings.

Thanks to the high-quality microscope lens and the particularly powerful illumination, the DSA30M ensures high image quality, which enables reliable measurement results from the image analysis. With the help of the instrument's high-speed camera, even the smallest, rapidly evaporating or absorbed droplets can be analyzed with ease.

Intuitive software with a workflow-oriented user interface
Swift and repeatable analyses thanks to measurement templates and powerful automation functions
Superior algorithms for image analyses provide for precise results even with difficult images
A wide range of evaluation methods makes ADVANCE a reliable scientific tool