Тип публикации: статья из журнала
Год издания: 2017
Идентификатор DOI: 10.18287/2412-6179-2017-41-4-577-580
Ключевые слова: Nanostructure fabrication, plasmonics, optical tweezers or optical manipulation
Аннотация: This study considered a process of quantum dots' self-assembly into nanostructure arrays with predefined geometry, which proceeds in the external resonant laser field. We considered the simplest case of assembling a stable structure of two particles. The problem was solved numerically using a three-dimensional model of Brownian dynamics. The idea of the method is that the attraction of the dots occurs due to the interaction of resonantly induced dipole moments, with the dots being then captured by the Van der Waals force. Finally, a three-dimensional model was considered; the average nanoparticle aggregation time as a function of the laser radiation wavelength was calculated; the probability of such structures' being formed was estimated for the calculated average aggregation time and for the laser pulse duration used in the experiment. The wavelength of the maximum probability was found to be shifted from the single particle resonance wavelength of 525 nm to the red area of 535 nm, which is in qualitative agreement with the redshift of the resonance wavelength of interacting particles.
Журнал: COMPUTER OPTICS
Выпуск журнала: Vol. 41, Is. 4
Номера страниц: 577-580
ISSN журнала: 01342452
Место издания: MOSCOW
Издатель: IMAGE PROCESSING SYSTEMS INST, RUSSIAN ACAD SCIENCES
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