液体界面 Liquid interface

Liquid lens

Liquid lenses are a type of lenses that can adjust focus according to an external stimulus such as the application of an electric potential, or a mechanical or hydraulic pressure. Focus control is fast and continuous. Low interface reflectivity is a limitation for all the profilometry techniques except DHM^® which enables to follow the liquid deformation over time, i.e in 4D.

A liquid lens formed from a water/oil interface is reversed due to external pressure/force applied. DHM recorded the dynamic 3D profile of the reverse process.  

Description:

• Courtesy of : Santiago de Compostela University, Spain
• Material: water/oil
• Instrument: DHM^® T-1000
• Time scale: <800 ms
• Magnification: 10x