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
A DETAILED ANALYSIS OF THE OPTICAL BEAM DEFLECTION TECHNIQUE FOR USE IN ATOMIC FORCE MICROSCOPY(full pdf)
PUTMAN CAJ, DEGROOTH BG, VANHULST NF, GREVE J
JOURNAL OF APPLIED PHYSICS
vol 72 issue 1: p6-p12 JUL 1 1992
A Michelson interferometer and an optical beam deflection configuration (both shot noise and diffraction limited) are compared for application in an atomic force microscope. The comparison shows that the optical beam deflection method and the interferometer have essentially the same sensitivity. This remarkable result is explained by indicating the physical equivalence of both methods. Furthermore, various configurations using optical beam deflection are discussed. All the setups are capable of detecting the cantilever displacements with atomic resolution in a 10 kHz bandwidth.