Optical Sciences

Biomolecules and nanostructures

The Optical Sciences group studies the interaction of light and matter. Our current focus is on detection and sensing/imaging with an emphasis on the development of integrated photonics. We are part of Twente University's Department of Science and Technology and member of the MESA+ institute.

 

NEAR-FIELD OPTICAL MICROSCOPE USING A SILICON-NITRIDE PROBE

(full pdf)

VANHULST NF, MOERS MHP, NOORDMAN OFJ, TACK RG, SEGERINK FB, BOLGER B
APPLIED PHYSICS LETTERS
vol 62 issue 5: p461-p463 FEB 1 1993

Operation of an alternative near-field optical microscope is presented. The microscope uses a microfabricated silicon- nitride probe with integrated cantilever, as originally developed for force microscopy. The cantilever allows routine close contact near-field imaging o­n arbitrary surfaces without tip destruction. The effect of adhesion forces o­n the coupling to the evanescent wave has been observed. Images with a lateral resolution of about 50 nm are presented and compared with atomic force images. A specific sample area can be selected using an integrated conventional light microscope.
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