Results 11 to 20 of about 36,694 (225)
Annual Review of Physical Chemistry, 2023 Photochemical upconversion is a process whereby two lower-energy photons are converted into a higher-energy photon by sensitized triplet–triplet annihilation. While recent interest in this process has been motivated by improving the efficiencies of solar cells, many applications are being explored.
Jiale, Feng +3 more
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Theranostic Upconversion Nanoparticles (I) [PDF]
Theranostics, 2013 This theme issue provides a comprehensive collection of original research articles as well as reviews on the creation of diverse types of theranostic upconversion nanoparticles, their fundamental interactions in biology, as well as their biophotonic applications in noninvasive diagnostics and therapy.
Han, Gang, Chen, Guanying
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Upconversion Spectrophotofluorometry [PDF]
, 2013 As the other chapters attest, sensitivity of fluorescent molecules to their local environment has created powerful tools in the study of molecular biology, particularly in the study of protein, DNA, and lipid dynamics. Surprisingly, even events faster than the nanosecond lifetimes of fluorophores are important in protein function, and in particular ...
Arianna, Biesso +2 more
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Mode-selective image upconversion [PDF]
Optics Letters, 2018 5 pages, 3 figures and 1 ...
Santosh Kumar +3 more
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Aminal-linked Covalent Organic Frameworks for Light Energy Upconversion. [PDF]
Angew Chem Int Ed EnglAminal‐linked covalent organic frameworks incorporating anthracene units are introduced as solid‐state platforms for triplet–triplet annihilation upconversion. The crystalline materials retain chromophore electronic properties and exhibit fluorescence quantum yields of up to 40%.
Brzeziński M +7 more
europepmc +3 more sources
Growth, processing, and optical properties of epitaxial Er_2O_3 on silicon [PDF]
, 2008 Erbium-doped materials have been investigated for generating and amplifying light in low-power chip-scale optical networks on silicon, but several effects limit their performance in dense microphotonic applications.
Atanackovic, P. B. +10 more
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Upconversion of a relativistic Coulomb field terahertz pulse to the near infrared [PDF]
, 2010 We demonstrate the spectral upconversion of a unipolar subpicosecond terahertz (THz) pulse, where the THz pulse is the Coulomb field of a single relativistic electron bunch.
Berden, G. +4 more
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Frontiers in Physics, 2021 High-performance terahertz (THz) imaging devices have drawn wide attention due to their significant application in a variety of application fields. Recently, the upconversion device based on the integrated homo-junction interfacial workfunction internal ...
Peng Bai +5 more
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Population mechanisms of the green Er3+:LiYF4 laser [PDF]
, 1995 In computer simulations the mechanisms that lead to room-temperature continuous-wave green upconversion lasing in Er3+:LiYF4 are investigated. The rate-equation system considers the full erbium level scheme up to 2H9/2, ground-state depletion, excited ...
Lüthy, W., Pollnau, M., Weber, H.P.
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The Dispersion Reduction Frequency Upconversion System at 1550 nm With Tightly Focused Beam
IEEE Access, 2022 The upconversion detection is a promising method to detect infrared radiation. It is proved that the focused beam makes a contribution to improving the upconversion efficiency.
Yuqi Jiang +3 more
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