Academic Journal
Hopping of single nanoparticles trapped in a plasmonic double-well potential
| العنوان: | Hopping of single nanoparticles trapped in a plasmonic double-well potential |
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| المؤلفون: | Yoon Seung Ju, Song Da In, Lee Jungmin, Kim Myung-Ki, Lee Yong-Hee, Kim Chang-Kyu |
| المصدر: | Nanophotonics, Vol 9, Iss 16, Pp 4729-4735 (2020) |
| بيانات النشر: | De Gruyter, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Physics |
| مصطلحات موضوعية: | arrhenius factor, double-well potential, kramers hopping, nanoantenna, plasmonics, Physics, QC1-999 |
| الوصف: | Thermally induced particle hopping in the nanoscale double-well potential is fundamental in material design and device operation. After the proposal of the basic hopping theory, several experimental studies, including some using the optical trapping method, have validated the theoretical approach over various friction ranges of the surrounding medium. However, only external parameters, such as viscosity, temperature, and pressures, have been varied in practical circumstances, and other tools capable of adjusting the potential profile itself to modulate the hopping rate are needed. By using metallic nanoantenna with various gap sizes and different optical pump power, we engineered a double-well potential landscape and directly observed the hopping of a single nanoparticle with a diameter of 4 nm. The distance between the two potential wells was 0.6–5 nm, and the maximum well depth and maximum height of the central potential barrier were approximately 69 and 4 kBT, respectively. The hopping rate was governed by the Arrhenius law and showed a vertex when the barrier height was approximately 2 kBT, which was in good agreement with the computational expectations. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2192-8606 2192-8614 |
| Relation: | https://doaj.org/toc/2192-8606; https://doaj.org/toc/2192-8614 |
| DOI: | 10.1515/nanoph-2020-0411 |
| URL الوصول: | https://doaj.org/article/7dcda6a12259471c9bdca1c41b4ddaa9 |
| رقم الانضمام: | edsdoj.7dcda6a12259471c9bdca1c41b4ddaa9 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21928606 21928614 |
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| DOI: | 10.1515/nanoph-2020-0411 |