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)


A Poormans Superlens for Visible Light

  • Robert Moerland - Former member
  • L. (Kobus) Kuipers - Former member

  • We try to realize and test the first superlens for visible light. Its predicted imaging properties will be addressed with a combination of single molecule detection and near-field optics. The object that is to be imaged is a subwavelength aperture. Single molecules at the other side of the film will report o­n the local fields built-up by the lens. Their fluorescence intensity will reveal not o­nly the magnitude of the electric field but also its direction. Variation of the relative position of object and detector (single molecule) will expose the imaging properties of the poormans superlens.


    The following articles have been published regarding this project:

    Reversible Polarization Control of Single Photon Emission

    (abstract) (full pdf)
    Robert J. Moerland, Tim H. Taminiau, Lukas Novotny, Niek F. van Hulst and Laurens Kuipers
    Nano Letters
    Vol. 8, No. 2 p606-p610 jan15, 2008

    Probing the negative permittivity perfect lens at optical frequencies using near-field optics and single molecule detection

    (abstract) (full pdf)
    Robert J. Moerland and Niek F. van Hulst, University of Twente; Henkjan Gersen, University of Aarhus; Laurens Kuipers, FOM Institute for Atomic and Molecular Physics
    Optics Express
    Vol. 13, No. 5 p1604 - p1614 march 07 2005
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