Results 11 to 20 of about 1,939,149 (335)

Gigantic blue shift of two-photon–induced photoluminescence of interpenetrated metal–organic framework (MOF) [PDF]

open access: yesNanophotonics, 2023
As an important means of modern science and technology, multiphoton fluorescence plays an essential role in high-resolution imaging, photochemistry, micro- and nano-processing and clinical diagnosis.
Chen Zhihui   +8 more
doaj   +2 more sources

Quantum Dot-Induced Blue Shift of Surface Plasmon Spectroscopy [PDF]

open access: yesNanomaterials, 2022
We experimentally demonstrate the spectral blue shift of surface plasmon resonance through the resonant coupling between quantum dots (QDs) and surface plasmons, surprisingly in contrast to the conventionally observed red shift of plasmon spectroscopy ...
Than Thi Nguyen   +4 more
doaj   +2 more sources

Magnetic blue shift of Mott gaps enhanced by double exchange [PDF]

open access: goldPhysical Review Research, 2021
A substantial energy gap of charge excitations induced by strong correlations is the characteristic feature of Mott insulators. We study how the Mott gap is affected by long-range antiferromagnetic order. Our key finding is that the Mott gap is increased
Mohsen Hafez-Torbati   +3 more
doaj   +2 more sources

Coexistence of the Band Filling Effect and Trap-State Filling in the Size-Dependent Photoluminescence Blue Shift of MAPbBr3 Nanoparticles [PDF]

open access: yesNanomaterials
The size-dependent photoluminescence (PL) blue shift in organometal halide perovskite nanoparticles has traditionally been attributed to quantum confinement effects (QCEs), irrespective of nanoparticle size.
Jing Sun   +4 more
doaj   +2 more sources

Dispersive wave blue-shift in supercontinuum generation

open access: goldOptics Express, 2006
We numerically study dispersive wave emission during femtosecond-pumped supercontinuum generation in photonic crystal fibres. We show that dispersive waves are primarily generated over a short region of high temporal compression. Despite the apparent complexity of the pump pulse in this region, we show that the dynamics of dispersive wave generation ...
Dane R. Austin   +3 more
openalex   +3 more sources

Blue shift of spontaneous emission in hyperbolic metamaterial. [PDF]

open access: yesSci Rep, 2014
Spontaneous emission is one of the most fundamental quantum phenomena in optics. Following the seminal work of Purcell and in agreement with the Fermi's Golden Rule, its rate can be controlled with the photonic density of states (PDOS). In recent years, this effect has been demonstrated in metamaterials with hyperbolic dispersion--highly anisotropic ...
Gu L, Tumkur TU, Zhu G, Noginov MA.
europepmc   +4 more sources

Blue-light background impairs visual exogenous attention shift

open access: yesScientific Reports, 2023
Previous research into the effects of blue light on visual-spatial attention has yielded mixed results due to a lack of properly controlling critical factors like S-cone stimulation, ipRGCs stimulation, and color.
Chien-Chun Yang   +2 more
doaj   +3 more sources

Synthesis of Zn-Cu-In-S/ZnS Core/Shell Quantum Dots with Inhibited Blue-Shift Photoluminescence and Applications for Tumor Targeted Bioimaging [PDF]

open access: goldTheranostics, 2013
A facile strategy is reported here for synthesis of Zn-Cu-In-S/ZnS (ZCIS/ZnS) core/shell QDs to address the synthetic issues that the unexpected blue-shift of CuInS2-based nanocrystals.
Weisheng Guo, Na chen, Yu Tu, Chunhong Dong, Bingbo Zhang, Chunhong Hu, Jin Chang
doaj   +2 more sources

Blue-shift photoconversion of near-infrared fluorescent proteins for labeling and tracking in living cells and organisms. [PDF]

open access: goldNat Commun, 2023
Pennacchietti F   +9 more
europepmc   +3 more sources

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