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
Study of the leakage field of magnetic force microscopy thin- film tips using electron holography(full pdf)
Frost BG, vanHulst NF, Lunedei E, Matteucci G, Rikkers E
APPLIED PHYSICS LETTERS
vol 68 issue 13: p1865-p1867 MAR 25 1996
Electron holography is applied for the study of the leakage field of thin-film ferromagnetic tips used as probes in magnetic force microscopy. We used commercially available pyramidal tips covered on one face with a thin NiCo film, which were then placed in a high external magnetic field directed along the pyramid axis. Good agreement between simulated and experimental electron phase difference maps allows to measure the local flux from the ferromagnetic tips and therefore to evaluate the perturbation induced by the microprobe stray field on the sample area. (C) 1996 American Institute of Physics.