Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

Laser Induces Patterns in Polymer Solutions

Facebook Twitter LinkedIn Email Comments
Researchers from the Institute of Electronic Structure and Laser and the University of Athens, both in Greece, and the Max Planck Institute for Polymer Research in Mainz, Germany, have reported the formation of patterns in homogeneous polymer solutions induced by a low-power, CW visible laser. Their findings are described in the July 5 issue of Science.

They trained a red krypton-ion laser onto optical cells containing various polymer solutions and directly observed both profile modifications of the laser on a screen and a smooth beam trace using dark-field coherent microscopy and a CCD camera. Most polymer solutions scatter low-power laser light. However, when the scientists applied the laser to a solution of poly(isoprene-1,4) in n-hexane, they observed a richly structured pattern. Concurrently, dark-field imaging revealed stable stringlike and dotlike patterns in the solution parallel to the laser beam propagation direction.
The team continues to investigate the phenomenon. The technological importance of light-matter interactions indicates that these observations could lead to photorefractive, micro-optics and nanotechnology applications.

Photonics Spectra
Aug 2002
As We Go To PressBreaking NewsMicroscopyPresstime Bulletin

Comments
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, info@photonics.com

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.