Evaluate the orientation process of the entire coated film
High-speed optical property measurements of structural changes during coating and drying processes.
Nagaoka University of Technology, Heat and Fluid Engineering Group, Professor, TAKAHASHI Tsutomu
If a device that could simultaneously determine birefringence and orientation angle as a 2D image at high speed were to exist, many research problems would be easier to solve.
For example, the flow birefringence observation method for a two-dimensional flow field of a polymer fluid is a technique developed several decades ago.
However, previous methods involving counting stripes to obtain phase differences greater than the measurement wavelengths, required a fluid with extremely strong birefringence and a flow path with a long optical path length, lacked sensitivity.
Using CRYSTA, the research team was able to measure the flow birefringence distribution of a viscoelastic fluid in a microchannel very easily, without the constraints evoked above. Furthermore, combined with micro PIV, simultaneous measurement of velocity and stress fields was possible, which is pretty impressive.
CRYSTA was researched and developed as the first polarization-sensitive high-speed camera and took more than five years to complete. It enables measurement and visualization of physical quantities and properties in various fields such as biotechnology, military, and aerospace.
- #Birefringence & stress strain measurement solutions
- #Polarization high-speed camera
- #High-speed Polarization Camera