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Single Molecule Photonics
- AFM-TIRF / SNOM
Contact: Dr. Volker Walhorn |
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Research Topic: Single molecules can nowadays be investigated
by means of optical, mechanical and electrical methods. Single
molecule fluorescence imaging and spectroscopy yield valuable
and quantitative information about optical properties, spatial
distribution and temporal dynamics of single molecules.
We have developped 1) scanning near-field optical microscopy
(SNOM) for single molecule imaging and spectroscopy and 2) a
small-cantilever based AFM combined with total internal reflection
fluorescence (TIRF) microscopy for ultrasensitive LIF detection
of individual fluorophores and simultaneous AFM control and
manipulation at the molecular level. |
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Images: (a) Aperture-less SNOM setup and single
dye molecule imaged at 20 nm optical resolution. (b) combined
AFM-TIRF with imaging and control of single semiconductor nanocrystal. |
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References: ... see section Publications |
