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)

 

Control of quantum dot luminescence

Collaboration with the Materials Science and Technology of Polymers Group of Prof. Julius Vancso

  • Jennifer Herek - Chair
  • Oya Tagit - Former member


  • This project aims at tailoring fluorescent nanoparticles based on semiconductor materials ("quantum dots", QDs) for bio-nanophotonic applications. QDs behave like "artificial atoms" showing discrete optical spectral lines due to the low number of atoms that make up their structure. We shall tackle QDs which will be incorporated in polymeric nano- and microspheres. The optical emission of QDs will be "engineered" by controlling the ligand periphery at the QD surface and the surrounding polymeric medium.


    Articles

    The following articles have been published regarding this project:

    Influence of the length and grafting density of PNIPAM chains on the colloidal and optical properties of quantum dot/PNIPAM assemblies

    (abstract) (full pdf)
    Oya Tagit, Nikodem Tomczak, Aliakbar Jafarpour, Dominik JaƄczewski, Ming Yong Han, G Julius Vancso and Jennifer L Herek
    Nanotechnology
    vol 22 issue 26 p265701 may 17, 2011
    doi:10.1088/0957-4484/22/26/265701
    Printable version