Optical Sciences

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 MESA+ institute.
We participate in the EU-COST actions MP1102: Coherent Raman microscopy (MicroCor) and CM1202: Supramolecular photocatalytic water splitting (PERSPECT-H2O)

 

VACUUM CHAMBER FOR SAMPLE ATTACHMENT IN ATOMIC FORCE MICROSCOPY


PUTMAN CAJ, VANDERWERF KO, VANOORT G, DEGROOTH BG, VANHULST NF, GREVE J
REVIEW OF SCIENTIFIC INSTRUMENTS
vol 63 issue 8: p4012-p4013 AUG 1992

A small ring-shaped vacuum chamber has been constructed and connected to the piezotube used for scanning samples in the atomic force microscope (AFM). Samples made up of any material, up to 50 mm in diameter, can be firmly attached o­nto the piezotube without causing damage to the sample. A 50-l beer container forms a buffer between vacuum pump and chamber. With this supply of vacuum, the AFM can be operated for a 4-8 h period without turning o­n the vacuum pump again. Samples can be changed within 30 s. The scan frequency when using microscope slides is limited to 40 Hz due to resonance effects of the microscope slides.
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