Optoelectronic generation of bio-aqueous femto-droplets based on the bulk photovoltaic effect
Entity
UAM. Departamento de Biología; UAM. Departamento de Física de MaterialesPublisher
Optical Society of AmericaDate
2020-02-21Citation
10.1364/OL.383770
Optics Letters 45.5 (2020): 1164-1167
ISSN
0146-9592 (print); 1539-4794 (online)DOI
10.1364/OL.383770Funded by
Ministerio de Ciencia, Innovación y Universidades of Spain (MAT2017-83951-R); Marie Sklodowska-Curie Action COFUND (713366-InterTalentum)Editor's Version
https://doi.org/10.1364/OL.383770Subjects
Absorption coefficient; Electric fields; Laser beams; Lithium niobate; Nd:YAG lasers; Visible light; Biología y Biomedicina / Biología; FísicaNote
"© 2020 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited"Rights
© 2020 Optical Society of AmericaEsta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
The generation and manipulation of small aqueous droplets is an important issue for nano- and biotechnology, particularly, when using microfluidic devices. The production of very small droplets has been frequently carried out by applying intense local electric fields to the fluid, which requires power supplies and metallic electrodes. This procedure complicates the device and reduces its versatility. In this work, we present a novel and flexible, to the best of our knowledge, electrodeless optoelectronic method for the production of tiny droplets of biologically friendly aqueous fluids. Our method takes advantage of the photoinduced electric fields generated by the bulk photovoltaic effect in iron-doped lithium niobate crystals. Two substrate configurations, presenting the polar ferroelectric axis either parallel or perpendicular to the active surface, have been successfully tested. In both crystal geometries, small droplets on the femtoliter scale have been obtained, although with a different spatial distributions correlated with the symmetry of the photovoltaic fields. The overall results demonstrate the effectiveness of the optoelectronic method to produce femtoliter droplets, both with pure water and with aqueous solutions containing biological material
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Google Scholar:Muñoz-Cortés, Esmeralda
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Puerto, Andres
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Blazquez-Castro, Alfonso
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Arizmendi López, Luís
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Bella Sombría, José Luis
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Lopez-Fernandez, Carmen
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Carrascosa Rico, Mercedes
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García Cabañes, Ángel
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