Biomolecules and nanostructures
The Optical Sciences group studies the interaction of light and matter at the nanoscale.
We do this by exploring ways to shape light and its environment. It's what we call
active and passive control. Our current focus is on the interaction of light with
biomolecules and nanostructures. We are part of Twente
University's Department of Science and Technology and member of the
NOVEL CALIXARENES IN THIN-FILMS FOR EFFICIENT 2ND-HARMONIC GENERATION(full pdf)
HEESINK GJT, VANHULST NF, BOLGER B, KELDERMAN E, ENGBERSEN JFJ, VERBOOM W, REINHOUDT DN
APPLIED PHYSICS LETTERS
vol 62 issue 17: p2015-p2017 APR 26 1993
Calixarenes are a novel type of molecules for nonlinear optics. In a single molecule four pi-conjugated systems are combined. Corona poled guest-host polymer systems [calixarenes-poly(methyl-methacrylate)] with transparency into the UV and loading up to 100% show a high degree of orientation. The maximum resonant d33 nonlinear coefficient measured at a fundamental wavelength of 590 nm is 51 pm/V. The d33 values of the thin films relax after poling to 65% of their maximum value. Results indicate self-organization of the molecules upon poling.