Results 21 to 30 of about 1,613,986 (294)

Small-Polaron Hopping and Low-Temperature (45–225 K) Photo-Induced Transient Absorption in Magnesium-Doped Lithium Niobate

open access: yesCrystals, 2020
A strongly temperature-dependent photo-induced transient absorption is measured in 6.5 mol% magnesium-doped lithium niobate at temperatures ranging from 45 K to 225 K.
Simon Messerschmidt   +6 more
doaj   +1 more source

Room-Temperature Transient Absorption in KDP Crystal Under Exposure to Nanosecond Laser at 355 nm

open access: yesIEEE Photonics Journal, 2018
Defects in high-purity optical materials produced by high-power laser irradiation have attracted much attention, which could modify material properties and cause degradation or even laser damage of optical components.
F. Geng   +6 more
doaj   +1 more source

Probing Competing Relaxation Pathways in Malonaldehyde with Transient X-Ray Absorption Spectroscopy [PDF]

open access: yes, 2020
Excited-state intramolecular hydrogen transfer (ESIHT) is a fundamental reaction relevant to chemistry and biology. Malonaldehyde is the simplest example of ESIHT, yet only little is known experimentally about its excited-state dynamics.
Andreas, Dreuw   +4 more
core   +1 more source

Nonlinear Optical Studies of Gold Nanoparticle Films

open access: yesNanomaterials, 2019
Gold films are widely used for different applications. We present the results of third- and high-order nonlinear optical studies of the thin films fabricated from Au nanoparticle solutions by spin-coating methods.
Anuradha Rout   +7 more
doaj   +1 more source

Broadband Visible Nonlinear Absorption and Ultrafast Dynamics of the Ti3C2 Nanosheet

open access: yesNanomaterials, 2020
The Ti3C2 nanosheet, as a new two-dimensional (2D) group, has been found to have attractive characteristics as material for electromagnetic shielding and energy storage.
Yabin Shao   +5 more
doaj   +1 more source

Excited‐State Dynamics in All‐Polymer Blends with Polymerized Small‐Molecule Acceptors

open access: yesAdvanced Science, 2023
Polymerizing small‐molecular acceptors (SMAs) is a promising route to construct high performance polymer acceptors of all‐polymer solar cells (all‐PSCs).
Ziran Liu   +6 more
doaj   +1 more source

Small Polaron Hopping in Fe:LiNbO3 as a Function of Temperature and Composition

open access: yesCrystals, 2018
Small-polaron hopping involved in charge transport in Fe-doped congruent lithium niobate is investigated as a function of temperature and composition by means of light-induced transient absorption spectroscopy.
Laura Vittadello   +3 more
doaj   +1 more source

Tailoring photoluminescence of WS2-microcavity coupling devices in broad visible range

open access: yesNanophotonics, 2023
Most of the previous TMDC-photon coupling devices were mainly based on A exciton due to its high oscillator strength and large exciton binding energy. Less effort has been focused on the modulation of the emission of B exciton and Rydberg states in TMDCs,
Zhao Le-Yi   +5 more
doaj   +1 more source

Monitoring the photochemistry of a formazan over 15 orders of magnitude in time

open access: yesFrontiers in Chemistry, 2022
2,3,5-triphenyltetrazolium chloride (TTC) may convert into phenyl-benzo[c]tetrazolocinnolium chloride (PTC) and 1,3,5-triphenylformazan (TPF) under irradiation with light.
Svenja Wortmann   +2 more
doaj   +1 more source

Ultrafast Electronic Deactivation Dynamics of Xanthosine Monophosphate

open access: yesMolecules, 2017
Ultrafast energy dissipation is a crucial factor for the photostability of DNA and RNA, but even some of the key electronic deactivation pathways in monomeric nucleic acid building stones are still controversial.
Katharina Röttger   +3 more
doaj   +1 more source

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