1,110 research outputs found

    Optical Aharonov-Bohm effect: an inverse hyperbolic problems approach

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    We describe the general setting for the optical Aharonov-Bohm effect based on the inverse problem of the identification of the coefficients of the governing hyperbolic equation by the boundary measurements. We interpret the inverse problem result as a possibility in principle to detect the optical Aharonov-Bohm effect by the boundary measurements.Comment: 34 pages. Minor changes, references adde

    Metabolomic Profiling for Identification of Novel Potential Biomarkers in Cardiovascular Diseases

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    Metabolomics involves the identification and quantification of metabolites present in a biological system. Three different approaches can be used: metabolomic fingerprinting, metabolic profiling, and metabolic footprinting, in order to evaluate the clinical course of a disease, patient recovery, changes in response to surgical intervention or pharmacological treatment, as well as other associated features. Characteristic patterns of metabolites can be revealed that broaden our understanding of a particular disorder. In the present paper, common strategies and analytical techniques used in metabolomic studies are reviewed, particularly with reference to the cardiovascular field

    Steady-State 3D Trapping and Manipulation of Microbubbles Using Thermocapillary

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    [EN] An experimental and theoretical study on the 3D trapping and manipulation of microbubbles by means low power laser-induced temperature gradients induced in ethanol by bulk light absorption (¿ 1550 nm) is presented. Two optical fibers were used: One for bubble generation (OFG) and the other for both trapping and manipulation (OFT). Light from a Q-switched pulsed laser (¿ 532 nm and pulse width ¿p 5 ns) propagates in fiber OFG and gets absorbed at silver nanoparticles (AgNPs), previously photodeposited, at the distal end of a fiber optic core, generating the microbubbles. In the fiber OFT, light of low power CW laser was used to trap and manipulate the bubbles by thermocapillary induced by light bulk absorption in ethanol. The microbubble generated on OFG migrates toward the fiber OFT. The equilibrium between the buoyancy force FB, drag force FD and the Marangoni force (also known as thermocapillary force) FM gives rise to a 3D stably trapping and manipulation of the microbubble for the best time to our best knowledge.This work was supported by CONACyT through the grant number A1-S-28440.Muñoz-Pérez, FM.; Ortega-Mendoza, JG.; Padilla-Vivanco, A.; Toxqui-Quitl, C.; Sarabia-Alonso, J.; Ramos-García, R. (2020). Steady-State 3D Trapping and Manipulation of Microbubbles Using Thermocapillary. Frontiers in Physics. 8. https://doi.org/10.3389/fphy.2020.585590
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