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Measuring the volume of adhesive drops


Micron-sized shape measurement using a laser microscope

Adhesive

Adhesive

1.  Application

Mobile equipment such as smartphones and cell phones, compact cameras, car navigation displays, car stereos, and other electronic equipment are made up of numerous parts and need to function correctly in both high- and low-temperature environments. When electronic equipment expands or contracts due to changes in temperature, the adhesives used to bond components in the mobile equipment can loosen, negatively affecting the performance of the equipment. Therefore, it is important for the adhesives to be resistant to a wide range of temperatures. To evaluate the adhesive’s performance, manufacturers measure the volume of the adhesive drops at different temperatures. 

2.  The Olympus solution

Thanks to dedicated objective lenses with high numerical apertures and an optical system optimized to obtain maximum performance from the 405 nm semiconductor laser, Olympus' LEXT 3D scanning laser microscope can capture the profile of an adhesive drop without making contact with the viscous adhesive. Equipped with a photomultiplier that can capture weak reflections, the microscope can easily obtain the surface profile of a low-reflection transparent sample, which would be difficult to capture with a conventional optical system. By performing volume measurement using the height data obtained via these features, the contraction and expansion of adhesives before and after thermal tests can be quantitatively measured, enabling the selection of a material less affected by thermal changes.
 

Images

3D and Volume measurement image
3D and Volume measurement image

Olympus IMS

Products Used for This Application

The LEXT™ OLS5100 laser scanning microscope combines exceptional accuracy and optical performance with smart tools that make the system easy to use. The tasks of precisely measuring shape and surface roughness at the submicron level are fast and efficient, simplifying your workflow and delivering high-quality data you can trust.

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