(41-4) 17 * << * >> * Russian * English * Content * All Issues

 PDF 96 kB

DOI: 10.18287/2412-6179-2017-41-4-577-580

Pages: 577-580.

Abstract:
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.

Keywords:
Nanostructure fabrication; plasmonics; optical tweezers or optical manipulation.

Citation:
Tkachenko VA, Tsipotan AS, Aleksandrovsky AS, Slabko VV.Three-dimensional model of quantum dots' self-assembly under the action of laser radiation. Computer Optics 2017; 41(4): 577-580. DOI: 10.18287/2412-6179-2017-41-4-577-580.

1. Yang Y, Zheng Y, Cao W, Titov A, Hyvonen J, Manders JR, Xue J, Holloway PH, Qian L. High-efficiency light-emitting devices based on quantum dots with tailored nanostructures. Nature Photonics 2014; 9: 259-266. DOI: 10.1038/nphoton.2015.36.
2. Volkov Y. Quantum dots in nanomedicine: Recent trends, advances and unresolved issues. Biochemical and Bio­physical Research Communications 2015; 468(3): 419-427. DOI: 10.1016/j.bbrc.2015.07.039.
3. Zhang J, Cheng F, Li J, Zhu J, Lu Y. Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives. Nanotoday 2016; 11(3): 309-329. DOI: 10.1016/j.nantod.2016.05.010.
4. Frecker T, Bailey D, Arzeta-Ferrer X, McBride J, Rosen­thal SJ. Review – Quantum dots and their application in lighting, displays, and biology. ESC Journal of Solid State Science and Technology 2016; 5(1): R3019-R3031. DOI: 10.1149/2.0031601jss.
5. Tikhomirov G, Hoogland S, Lee PE, Fischer A, Sargent EH, Kelley SO. DNA-based programming of quantum dot valency, self-assembly and luminescence. Nature Nano­technology 2011; 6; 485-490. DOI: 10.1038/nna­no.2011.100.
6. Wang T, LaMontagne D, Lynch J, Zhuangc J, Cao YC. Colloidal superparticles from nanoparticle assembly. Chem Soc Rev 2013; 42(7): 2804-2823. DOI: 10.1039/c2cs35318k.
7. Slabko VV, Khachatryan GG, Aleksandrovsky AS. Self-organized aggregation of small metal particles controlled by an external light field. JETP Letters 2006; 84(6): 300-304. DOI: 10.1134/S0021364006180056.
8. Slabko VV, Tsipotan AS, Aleksandrovsky AS. Resonant light-controlled self-assembly of ordered nanostructures. Photonics and Nanostructures – Fundamentals and Appli­cations 2012; 10(4): 636-643. DOI: 10.1016/j.photo­nics.2012.06.002.
9. Slabko VV, Tsipotan AS, Aleksandrovsky AS. Self-organised aggregation of a pair of particles with different resonant frequencies and electric dipole moments of transitions, controlled by an external quasi-resonant field. Quantum Electronics 2013; 43(5): 458-462. DOI: 10.1070/QE2013v043n05ABEH015021.
10. Tsipotan AS, Gerasimova MA, Slabko VV, Aleksandrov­sky AS. Laser-induced wavelength-controlled self-assem­bly of colloidal quasi-resonant quantum dots. Optics Express 2016; 24(10): 11145-11150. DOI: 10.1364/OE.24.011145.
11. Wang C-L, Fang M, Han J-S, Zhang H, Cui Y-P, Yang B. Two opposite effects of alcohols in the precipitation of aqueous nanocrystals. The Journal of Physical Chemistry C 2009; 113(45): 19445-19451. DOI: 10.1021/jp905407y.
12. Xu J, Xu S, Lv C, Wang C, Cui Y. Excellent dynamic stability under saturated salt solution for aqueous quantum dots capped by multi-branched ligands. Materials Research Express 2016; 3(9): 095903. DOI: 10.1088/2053-1591/3/9/095903.
13. Zhang H, Liu Y, Zhang J, Wang C, Li M, Yang B. Influence of interparticle electrostatic repulsion in the initial stage of aqueous semiconductor nanocrystal growth. The Journal of Physical Chemistry C 2008; 112(6): 1885-1889. DOI: 10.1021/jp710110n.
14. Slabko VV, Tsipotan AS, Aleksandrovsky AS, Slyusareva EA. Dynamics of self-organized aggregation of resonant nanoparticles in a laser field. Applied Physics B 2014; 117(1): 271-278. DOI: 10.1007/s00340-014-5831-0.