by J. Matarrubia, A. García-Cabañes, J. L. Plaza, F. Agulló-López and M. Carrascosa
Abstract:
The role of light modulation m and particle size on the morphology and spatial resolution of nano-particle patterns obtained by photovoltaic tweezers on Fe : LiNbO 3 has been investigated. The impact of m when using spherical as well as non-spherical (anisotropic) nano-particles deposited on the sample surface has been elucidated. Light modulation is a key parameter determining the particle profile contrast that is optimum for spherical particles and high- m values ( m ∼ 1). The minimum particle periodicities reachable are also investigated obtaining periodic patterns up to3.5 µ m. This is a value at least one order of magnitude shorter than those obtained in previous reported experiments. Results are successfully explained and discussed in light of the previous reported models for photorefraction including nonlinear carrier transport and dielectrophoretic trapping. From the results, a number of rules for particle patterning optimization are derived.
Reference:
J. Matarrubia, A. García-Cabañes, J. L. Plaza, F. Agulló-López and M. Carrascosa, “Optimization of particle trapping and patterning via photovoltaic tweezers: role of light modulation and particle size”, Journal of Physics D: Applied Physics, vol. 47, no. 26, pp. 265101.
Bibtex Entry:
@article{matarrubia_optimization_2014,
title = {Optimization of particle trapping and patterning via photovoltaic tweezers: role of light modulation and particle size},
volume = {47},
issn = {0022-3727},
shorttitle = {Optimization of particle trapping and patterning via photovoltaic tweezers},
url = {http://stacks.iop.org/0022-3727/47/i=26/a=265101},
doi = {10.1088/0022-3727/47/26/265101},
abstract = {The role of light modulation m and particle size on the morphology and spatial resolution of nano-particle patterns obtained by photovoltaic tweezers on Fe : LiNbO 3 has been investigated. The impact of m when using spherical as well as non-spherical (anisotropic) nano-particles deposited on the sample surface has been elucidated. Light modulation is a key parameter determining the particle profile contrast that is optimum for spherical particles and high- m values ( m ∼ 1). The minimum particle periodicities reachable are also investigated obtaining periodic patterns up to3.5 µ m. This is a value at least one order of magnitude shorter than those obtained in previous reported experiments. Results are successfully explained and discussed in light of the previous reported models for photorefraction including nonlinear carrier transport and dielectrophoretic trapping. From the results, a number of rules for particle patterning optimization are derived.},
language = {en},
number = {26},
urldate = {2017-10-23},
journal = {Journal of Physics D: Applied Physics},
author = {Matarrubia, J. and García-Cabañes, A. and Plaza, J. L. and Agulló-López, F. and Carrascosa, M.},
year = {2014},
pages = {265101},
file = {IOP Full Text PDF:E:\cmam_papers\files\1273\Matarrubia et al. - 2014 - Optimization of particle trapping and patterning v.pdf:application/pdf;IOP Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\L2J4LQFV\Matarrubia et al. - 2014 - Optimization of particle trapping and patterning v.pdf:application/pdf},
}