Optoelectronic tweezers under arbitrary illumination patterns: theoretical simulations and comparison to experiment

Arregui, Cándido; Ramiro, José Bruno; Alcázar, A.; Méndez, Alfredo; Burgos, Héctor; Garcı́a-Cabañes, A.; Carrascosa, M.

doi:10.1364/oe.22.029099

Cited by 38 publications

(29 citation statements)

References 20 publications

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“…This bulk field extends outside the crystal (evanescent fields) allowing particle manipulation by the corresponding electrical forces [14,16]. The evanescent PV fields can be calculated from the bulk fields through the boundary conditions at the sample surface and have been numerically simulated for periodic and arbitrary light illumination profiles [26]. In that work, the crystal substrate had the polar axis parallel to the surface, x-or y-cut, (see Figure 2a,b).…”

Section: Physical Basis Of the Pv Methodsmentioning

confidence: 99%

“…In that work, the crystal substrate had the polar axis parallel to the surface, x-or y-cut, (see Figure 2a,b). A recent work [27] includes a theoretical study for the same x-/y-cut geometry and using a very similar model than that of reference [26] but applied to a cylindrical light beam. Additionally, since 2013 another configuration with the polar axis normal to the surface, i.e., z-cut, (see Figure 2c) has been often employed in relation to 2D patterning (see Section 3) and a simple model to describe it has been already reported [28,29].…”

Section: Physical Basis Of the Pv Methodsmentioning

confidence: 99%

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Recent Achievements on Photovoltaic Optoelectronic Tweezers Based on Lithium Niobate

et al. 2018

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Abstract:This review presents an up-dated summary of the fundamentals and applications of optoelectronic photovoltaic tweezers for trapping and manipulation of nano-objects on the surface of lithium niobate crystals. It extends the contents of previous reviews to cover new topics and developments which have emerged in recent years and are marking the trends for future research. Regarding the theoretical description of photovoltaic tweezers, detailed simulations of the electrophoretic and dielectrophoretic forces acting on different crystal configurations are discussed in relation to the structure of the obtained trapping patterns. As for the experimental work, we will pay attention to the manipulation and patterning of micro-and nanoparticles that has experimented an outstanding progress and relevant applications have been reported. An additional focus is now laid on recent work about micro-droplets, which is a central topic in microfluidics and optofluidics. New developments in biology and biomedicine also constitute a relevant part of the review. Finally, some topics partially related with photovoltaic tweezers and a discussion on future prospects and challenges are included.

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Section: Physical Basis Of the Pv Methodsmentioning

confidence: 99%

Section: Physical Basis Of the Pv Methodsmentioning

confidence: 99%

Recent Achievements on Photovoltaic Optoelectronic Tweezers Based on Lithium Niobate

et al. 2018

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“…More specific expressions and analysis for the dielectrophoretic force on the particles can be found in references [7,11]. In addition theoretical calculations of the operation of PV tweezers with arbitrary light patterns have been reported in [12] including successful comparison with experimental results.…”

Section: Physical Basis Of Pv Tweezersmentioning

confidence: 99%

Photovoltaic tweezers an emergent tool for applications in nano and bio-technology

et al. 2015

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An overview of the work recently conducted by our group on the development and applications of photovoltaic tweezers is presented. It includes the analysis of the physical basis of the method and the main achievements in its experimental implementation. Particular attention will be paid to the main potential applications and first demonstrations of its use in nano-and bio-technology. Specifically: i) fabrication of metallic nanoestructures for plasmonic applications, ii) development of diffractive components, iii) manipulation and patterning (1D and 2D) of various types of bio-objects (spores or pollen…) and iv) effects of PV fields of LiNbO 3 in tumour cells.

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“…At the state of the art, few papers report numerical simulation and/or experimental results of DEP in Lithium Niobate [24][25][26][27][28][29][30]. In particular theoretical models and numerical results of photorefractivity-induced trapping (an important tool for the evaluation of DEP forces and their spatial distribution) are presented in references [24,25] and [28], while experimental data are reported in reference [26,27].…”

Section: Introductionmentioning

confidence: 99%

“…In particular theoretical models and numerical results of photorefractivity-induced trapping (an important tool for the evaluation of DEP forces and their spatial distribution) are presented in references [24,25] and [28], while experimental data are reported in reference [26,27]. Additionally, pyroelectricity-induced trapping of water droplets is described in reference [29,30].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study of Optoelectronic Trapping on Iron-Doped Lithium Niobate Substrate

et al. 2016

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Optoelectronic tweezers (OET) are a promising technique for the realization of reconfigurable systems suitable to trap and manipulate microparticles. In particular, dielectrophoretic (DEP) forces produced by OET represent a valid alternative to micro-fabricated metal electrodes, as strong and spatially reconfigurable electrical fields can be induced in a photoconductive layer by means of light-driven phenomena. In this paper we report, and compare with the experimental data, the results obtained by analyzing the spatial configurations of the DEP-forces produced by a 532 nm laser beam, with Gaussian intensity distribution, impinging on a Fe-doped Lithium Niobate substrate. Furthermore, we also present a promising preliminary result for water-droplets trapping, which could open the way to the application of this technique to biological samples manipulation.

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Optoelectronic tweezers under arbitrary illumination patterns: theoretical simulations and comparison to experiment

Cited by 38 publications

References 20 publications

Recent Achievements on Photovoltaic Optoelectronic Tweezers Based on Lithium Niobate

Recent Achievements on Photovoltaic Optoelectronic Tweezers Based on Lithium Niobate

Photovoltaic tweezers an emergent tool for applications in nano and bio-technology

Numerical and Experimental Study of Optoelectronic Trapping on Iron-Doped Lithium Niobate Substrate

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