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
EVANESCENT-FIELD OPTICAL MICROSCOPY - EFFECTS OF POLARIZATION, TIP SHAPE AND RADIATIVE WAVES(full pdf)
VANHULST NF, SEGERINK FB, ACHTEN F, BOLGER B
vol 42: p416-p421 part A JUL 1992
Recent results in evanescent-field optical microscopy are presented. A resolution of 30 nm in the lateral directions and 0.1 nm in height has been obtained by suitable tip fabrication. Both the direction of the exciting field and the tip shape are shown to affect the optical coupling efficiency and resolution. Near-field diffraction patterns are observed with high lateral resolution by interference between evanescent and propagating waves.