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
Standard diffraction theory says that fields can only be focused down to a focus-size comparable to the free-space wavelength of the field. However that theory is based on a number of approximations. Since the Maxwell equations can be inverted in time it is clear that fields can be focused back to the size of an emitter which can be far sub-wavelength. In this project we will design an antenna that inverts the dipole radiation pattern to generate a field that focuses to a spot (sub-mm) that is much smaller than the wavelength (several meters).