The fluorescence resonance energy transfer (FRET) process is investigated between donor dye molecules deposited on the sample surface and acceptor dye molecules deposited on the tips of scanning near-field and atomic force microscopes. The FRET process was observed only when the tip acquired contact with the sample and took place in regions of sizes of only a few tens of nanometers with only a few thousands (or even hundreds) of molecules involved. The dependence of the FRET intensity on the tip-sample acting force is recorded and interpreted. In relation with the obtained results, the construction of a previously proposed one - atom FRET SNOM is described.
|Original language||English (US)|
|Number of pages||10|
|Journal||Zhurnal Eksperimental'noj i Teoreticheskoj Fiziki|
|State||Published - 2000|
ASJC Scopus subject areas
- Physics and Astronomy(all)