| Issue |
EPL
Volume 129, Number 5, March 2020
|
|
|---|---|---|
| Article Number | 58001 | |
| Number of page(s) | 7 | |
| Section | Interdisciplinary Physics and Related Areas of Science and Technology | |
| DOI | https://doi.org/10.1209/0295-5075/129/58001 | |
| Published online | 02 April 2020 | |
Nanoscale optical trap for fluorescent nanoparticles
1 Université de Rennes 1, Campus de Beaulieu - F-35000 Rennes, France
2 Université de Rennes 1, CNRS IPR UMR 6251 - F-35000 Rennes, France
Received: 4 December 2019
Accepted: 23 March 2020
Optical trapping has offered new potentialities in the manipulation of bacteria, living cells, organelles, or microparticles in micrometric volumes. Its extension to the nanometer scale may create exceptional opportunities in many areas of science. We report here the trapping of a single 100 nm radius particle in a nanometric volume. The trapping relies on stimulated emission of the fluorescent particle in the evanescent wave of a totally reflected Arago spot on a glass-liquid interface. The trapping volume is a 200 nm height and 125 nm radius cylinder. Such a nano-trap, aside from applications in nano-physics, may echo the needs of life scientists to manipulate ever-smaller biological samples.
PACS: 87.80.Cc – Optical trapping / 42.50.Wk – Mechanical effects of light on material media, microstructures and particles / 78.45.+h – Stimulated emission
© EPLA, 2020
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