Simultaneous Widefield Voltage and Dye-Free Optical Mapping Quantifies Electromechanical Waves in Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes
Sign Up to like & getrecommendations! Published in 2023 at "ACS Photonics"
DOI: 10.1021/acsphotonics.2c01644
Abstract: Coupled electromechanical waves define a heart’s function in health and diseases. Optical mapping of electrical waves using fluorescent labels offers mechanistic insights into cardiac conduction abnormalities. Dye-free/label-free mapping of mechanical waves presents an attractive non-invasive… read more here.
Keywords: simultaneous widefield; free optical; dye free; voltage ... See more keywords
1/f-noise-free optical sensing with an integrated heterodyne interferometer
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-22271-4
Abstract: Optical evanescent sensors can non-invasively detect unlabeled nanoscale objects in real time with unprecedented sensitivity, enabling a variety of advances in fundamental physics and biological applications. However, the intrinsic low-frequency noise therein with an approximately… read more here.
Keywords: heterodyne interferometer; free optical; noise free; optical sensing ... See more keywords
Plasmofluidic Microlenses for Label-Free Optical Sorting of Exosomes
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-44801-3
Abstract: Optical chromatography is a powerful optofluidic technique enabling label-free fractionation of microscopic bioparticles from heterogenous mixtures. However, sophisticated instrumentation requirements for precise alignment of optical scattering and fluidic drag forces is a fundamental shortcoming of… read more here.
Keywords: fluidic drag; microlenses label; label free; drag forces ... See more keywords
Heading-Error-Free Optical Atomic Magnetometry in the Earth-Field Range.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.130.153601
Abstract: We demonstrate an alignment-based ^{87}Rb magnetometer that is immune to nonlinear Zeeman (NLZ) splitting, addressing an important problem in alkali-metal atomic magnetometry. In our scheme, there is a single magnetic resonance peak and well-separated hyperfine… read more here.
Keywords: atomic magnetometry; free optical; error free; heading error ... See more keywords
Waveband-Shift-Free Optical Phase Conjugator for Spectrally Efficient Fiber Nonlinearity Mitigation
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2790799
Abstract: We discuss a novel broadband, polarization-insensitive, and wavelength-shift-free optical phase conjugator (OPC). In the OPC scheme, the original input signal is inherently suppressed in a polarization-diversity loop setup. This allows for spectrally efficient, wavelength-(band)-shift-free generation… read more here.
Keywords: shift; optical phase; shift free; free optical ... See more keywords
INS-fOCT: a label-free, all-optical method for simultaneously manipulating and mapping brain function
Sign Up to like & getrecommendations! Published in 2020 at "Neurophotonics"
DOI: 10.1117/1.nph.7.1.015014
Abstract: Abstract. Significance: Current approaches to stimulating and recording from the brain have combined electrical or optogenetic stimulation with recording approaches, such as two-photon, electrophysiology (EP), and optical intrinsic signal imaging (OISI). However, we lack a… read more here.
Keywords: label free; free optical; method; ins foct ... See more keywords
Dipole force free optical control and cooling of nanofiber trapped atoms.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.004315
Abstract: The evanescent field surrounding nanoscale optical waveguides offers an efficient interface between light and mesoscopic ensembles of neutral atoms. However, the thermal motion of trapped atoms, combined with the strong radial gradients of the guided… read more here.
Keywords: force free; trapped atoms; control; dipole force ... See more keywords
A Contact-Free Optical Device for the Detection of Pulmonary Congestion—A Pilot Study
Sign Up to like & getrecommendations! Published in 2022 at "Biosensors"
DOI: 10.3390/bios12100833
Abstract: Background: The cost of heart failure hospitalizations in the US alone is over USD 10 billion per year. Over 4 million Americans are hospitalized every year due to heart failure (HF), with a median length… read more here.
Keywords: congestion; free optical; detection; contact free ... See more keywords
ZnO Tetrapods for Label-Free Optical Biosensing: Physicochemical Characterization and Functionalization Strategies
Sign Up to like & getrecommendations! Published in 2023 at "International Journal of Molecular Sciences"
DOI: 10.3390/ijms24054449
Abstract: In this study, we fabricated three different ZnO tetrapodal nanostructures (ZnO-Ts) by a combustion process and studied their physicochemical properties by different techniques to evaluate their potentiality for label-free biosensing purposes. Then, we explored the… read more here.
Keywords: label free; free optical; zno tetrapods; optical biosensing ... See more keywords
Nonlocality-Enabled Magnetic Free Optical Isolation in Hyperbolic Metamaterials
Sign Up to like & getrecommendations! Published in 2021 at "Materials"
DOI: 10.3390/ma14112865
Abstract: Hereby, we present an optical isolator (optical diode) based on a hyperbolic metamaterial (HMM). We demonstrate that a grating-free planar linear non-magnetic HMM structure deposited on a high-index substrate, which, due to presence of strong… read more here.
Keywords: nonlocality enabled; optical isolation; enabled magnetic; magnetic free ... See more keywords
Label-Free Optical Detection of Mycotoxins Using Specific Aptamers Immobilized on Gold Nanostructures
Sign Up to like & getrecommendations! Published in 2018 at "Toxins"
DOI: 10.3390/toxins10070291
Abstract: This work focuses on the development of the novel label-free optical apta-sensors for detection of mycotoxins. A highly sensitive analytical method of total internal reflection ellipsometry (TIRE) combined with Localized Surface Plasmon Resonance (LSPR) phenomenon… read more here.
Keywords: detection; specific aptamers; aptamers immobilized; detection mycotoxins ... See more keywords