Results 41 to 50 of about 1,613,986 (294)
Compressed supercontinuum probe for transient absorption microscopy [PDF]
Optics Letters, 2018 Here, we combine three optical advancements to transient absorption microscopy in order to access the photodynamics in systems requiring stringent spatial and temporal resolution criteria. First, a broadband visible probe is generated by a commercial photonic crystal fiber.
Kevin Higgins, Tessa R. Calhoun
openaire +2 more sources
Ultraviolet transient absorption, transient grating and photon echo studies of aqueous tryptophan [PDF]
, 2013 We compare UV transient grating (TG) experiments of aqueous tryptophan with transient absorption (TA) and fluorescence up-conversion measurements. The TG and TA signals show a bi-exponential rise with sub-ps and ps time constants, which are consistent ...
Chergui, Majed +6 more
core +2 more sources
Nanophotonics, 2020 Using in situ ultrafast laser spectroscopic techniques to monitor the charge dynamics of semiconductor photocatalysts under operating conditions is essential for digging out the veritable interactions between charge carriers and the reactive species ...
Lai Ting-Hsuan +2 more
doaj +1 more source
The Other Dimension—Tuning Hole Extraction via Nanorod Width
Nanomaterials, 2022 Solar-to-hydrogen generation is a promising approach to generate clean and renewable fuel. Nanohybrid structures such as CdSe@CdS-Pt nanorods were found favorable for this task (attaining 100% photon-to-hydrogen production efficiency); yet the rods ...
Tal Rosner +6 more
doaj +1 more source
CAVITY ENHANCED ULTRAFAST TRANSIENT ABSORPTION SPECTROSCOPY [PDF]
Proceedings of the 70th International Symposium on Molecular Spectroscopy, 2015 We present a new technique using a frequency comb laser and optical cavities for performing ultrafast transient absorption spectroscopy with improved sensitivity. Resonantly enhancing the probe pulses, we demonstrate a sensitivity of $Δ$OD $ = 1 \times 10^{-9}/\sqrt{\mbox{Hz}}$ for averaging times as long as 30 s per delay point ($Δ$OD$_{min} = 2 ...
Reber, Melanie A. R. +2 more
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Evaluation of Multiangle Absorption Photometry for Measuring Aerosol Light Absorption [PDF]
, 2005 A new multiangle absorption photometer for the measurement of aerosol light absorption was recently introduced that builds on the simultaneous measurement of radiation transmitted through and scattered back from a particle-loaded fiber filter at multiple
Arnott, W.P. +5 more
core +1 more source
Stability and Thermal Conductivity Characteristics of Nanofluids (H2O/CH3OH + NaCl + Al2O3 Nanoparticles) for CO2 Absorption Application [PDF]
, 2012 In this study, the nanofluids are produced by dispersing Al2O3 nanoparticles in the H2O/CH3OH binary mixtures using an ultrasonic equipment. Solid Sodium Chlorides (NaCl) with a fixed mass fraction are dissolved in the binary mixture for CO2 absorption ...
Pang, Changwei, Kang, Yong Tae
core +1 more source
Attosecond transient absorption of a continuum threshold
, 2020 The laser-field-modified dipole response of the first ionization threshold of helium is studied by means of attosecond transient absorption spectroscopy.
Blaettermann, Alexander +17 more
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Transient-absorption phases with strong probe and pump pulses
, 2017 The quantum dynamics of a system of Rb atoms, modeled by a V-type three-level system interacting with intense probe and pump pulses, are studied. The time-delay-dependent transient-absorption spectrum of an intense probe pulse is thus predicted, when ...
Vadim Becquet (17500137) +1 more
core +1 more source
A Time-Resolved Study on the Reactivity of Alcoholic Drinks with the Hydroxyl Radical
Molecules, 2019 Reactive oxygen species (ROS) can provoke damage to cells, where their concentrations are regulated by antioxidants. As the hydroxyl radical (•OH) is the most oxidizing ROS, we have focused our attention on the use of a mechanistically based time ...
Gemma M. Rodriguez-Muñiz +2 more
doaj +1 more source