Optoelectronic generation of bio-aqueous femto-droplets based on the bulk photovoltaic effect
EntityUAM. Departamento de Biología; UAM. Departamento de Física de Materiales
PublisherOptical Society of America
10.1364/OL.383770Optics Letters 45.5 (2020): 1164-1167
ISSN0146-9592 (print); 1539-4794 (online)
Funded byMinisterio de Ciencia, Innovación y Universidades of Spain (MAT2017-83951-R); Marie Sklodowska-Curie Action COFUND (713366-InterTalentum)
SubjectsAbsorption coefficient; Electric fields; Laser beams; Lithium niobate; Nd:YAG lasers; Visible light; Biología y Biomedicina / Biología; Física
Note"© 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 America
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
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
Google Scholar:Munoz-Cortes, Esmeralda - Puerto, Andres - Blazquez-Castro, Alfonso - Arizmendi, Luis - Bella Sombría, José Luis - Lopez-Fernandez, Carmen - Carrascosa Rico, Mercedes - Garcia-Cabanes, Angel
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