Results 31 to 40 of about 36,694 (225)
Upconversion in solar cells [PDF]
Nanoscale Research Letters, 2013 The possibility to tune chemical and physical properties in nanosized materials has a strong impact on a variety of technologies, including photovoltaics. One of the prominent research areas of nanomaterials for photovoltaics involves spectral conversion.
van Sark, W.G.J.H.M. +4 more
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Plasmon Modulated Upconversion Biosensors
Biosensors, 2023 Over the past two decades, lanthanide-based upconversion nanoparticles (UCNPs) have been fascinating scientists due to their ability to offer unprecedented prospects to upconvert tissue-penetrating near-infrared light into color-tailorable optical illumination inside biological matter. In particular, luminescent behavior UCNPs have been widely utilized
Anara Molkenova +4 more
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Upconversion nanoparticles for bioimaging
Nanotechnology Reviews, 2017 Fluorescent labeling is a widely used indispensable tool in biology. Conventional downconversion fluorescence labels with ultraviolet or short-wavelength excitation suffer from autofluorescence, low signal-to-noise ratio, and incident photo damage to ...
Song Chenxi +5 more
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, 2018 We propose a simplified rate-equation model for the 1500 nm to 980 nm upconversion in Er$^{3+}$. The simplifications, based on typical experimental conditions as well as on conclusions based on previously published more advanced models, enable an ...
Balling, Peter +5 more
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Upconversion Nonlinear Structured Illumination Microscopy [PDF]
Nano Letters, 2020 Video-rate super-resolution imaging through biological tissue can visualize and track biomolecule interplays and transportations inside cellular organisms. Structured illumination microscopy allows for wide-field super resolution observation of biological samples but is limited by the strong absorption and scattering of light by biological tissues ...
Baolei Liu +11 more
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Ultra-stable near-infrared Tm3+-doped upconversion nanoparticles for in vivo wide-field two-photon angiography with a low excitation intensity [PDF]
Journal of Innovative Optical Health Sciences, 2019 Two-photon luminescence with near-infrared (NIR) excitation of upconversion nanoparticles (NPs) is of great importance in biological imaging due to deep penetration in high-scattering tissues, low auto-luminescence and good sectioning ability ...
Wen Liu, Runze Chen, Sailing He
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Bioimaging with Upconversion Nanoparticles
Advanced Photonics Research, 2022 Bioimaging enables the spatiotemporal visualization of biological processes at various scales empowered by a range of different imaging modalities and contrast agents. Upconversion nanoparticles (UCNPs) represent a distinct type of such contrast agents with the potential to transform bioimaging due to their unique optical properties and functional ...
Evan M. Mettenbrink +2 more
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Recharging upconversion: revealing rubrene's replacement
Nanoscale, 2022 We demonstrate near-infrared-to-green upconversion using 1-chloro-9,10-bis(phenylethynyl)anthracene. The replacement of rubrene highlights that triplet generation at the perovskite/annihilator interface is a universal process.
Colette Sullivan, Lea Nienhaus
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Crystals, 2023 Scientists are increasingly interested in new inorganic luminescence materials that could be excited with near-infrared (NIR) radiation. These materials can be used as luminescent thermometers, bio-imaging agents, anti-counterfeiting pigments, etc.
Julija Grigorjevaite +1 more
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Mid-infrared upconversion spectroscopy based on a Yb:fiber femtosecond laser [PDF]
, 2011 We present a system for molecular spectroscopy using a broadband mid-infrared laser with near infrared detection. Difference frequency generation of a Yb:fiber femtosecond laser produced a mid-infrared (MIR) source tunable from 2100-3700 cm^-1 (2.7-4.7 ...
Diddams, Scott A., Johnson, Todd A.
core +3 more sources