Results 11 to 20 of about 147,412 (306)

Acoustic Vibration Modes of Gold–Silver Core–Shell Nanoparticles

Chemosensors, 2022
Bimetallic Au/Ag core–shell cuboid nanoparticles (NPs) exhibit a complex plasmonic response dominated by a dipolar longitudinal mode and higher-order transverse modes in the near-UV, which may be exploited for a range of applications.
Tadele Orbula Otomalo, Lorenzo Di Mario, Cyrille Hamon, Doru Constantin, Francesco Toschi, Khanh-Van Do, Vincent Juvé, Pascal Ruello, Patrick O’Keeffe, Daniele Catone, Alessandra Paladini, Bruno Palpant   +11 more
doaj   +1 more source

Femtosecond Spectroscopy on a Dibenzophenazine‐Cored Macrocycle Exhibiting Thermally Activated Delayed Fluorescence

ChemistryOpen, 2023
The photophysics of a thermally activated delayed fluorescence (TADF) emitting macrocycle consisting of two dibenzo[a,j]phenazine acceptor moieties bridged by two N,N,N’,N’‐tetraphenylene‐1,4‐diamine donor units was scrutinized in solution by steady ...
Dr. Kristoffer A. Thom, Oliver Nolden, Dr. Oliver Weingart, Dr. Saika Izumi, Prof. Dr. Satoshi Minakata, Prof. Dr. Youhei Takeda, Prof. Dr. Peter Gilch   +6 more
doaj   +1 more source

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

Crystals, 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, Andreas Krampf, Laura Vittadello, Mirco Imlau, Tobias Nörenberg, Lukas M. Eng, David Emin   +6 more
doaj   +1 more source

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

IEEE 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, Q. Xu, F. R. Wang, H. D. Xia, J. B. Wen, J. Huang, X. D. Jiang   +6 more
doaj   +1 more source

Broadband Visible Nonlinear Absorption and Ultrafast Dynamics of the Ti₃C₂ Nanosheet

Nanomaterials, 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, Chen Chen, Qing He, Wenzhi Wu, Chensha Li, Yachen Gao   +5 more
doaj   +1 more source

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

Advanced 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, Qian Li, Lulu Fu, Jide Wang, Jing Ma, Chunfeng Zhang, Rui Wang   +6 more
doaj   +1 more source

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

Frontiers 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, Roger Jan Kutta, Patrick Nuernberger   +2 more
doaj   +1 more source

X-Ray Transient Absorption Reveals the 1Au (Nπ*) State of Pyrazine in Electronic Relaxation

, 2021
Electronic relaxation in organic chromophores often proceeds via states not directly accessible by photoexcitation. We report on the photoinduced dynamics of pyrazine that involves such states, excited by a 267 nm laser and probed with X-ray transient ...
Sonia, Coriani, Mátyás Imre, Pápai, Anna, Krylov, Zheyue, Yang, Klaus Braagaard, Møller, Eric, Haugen, Yuki, Kobayashi, Stephen, Leone, Michael, Epshtein, Valeriu, Scutelnic, Shota, Tsuru, Tian, Xue   +11 more
core   +1 more source

Adaptive noise canceling for transient absorption microscopy [PDF]

Journal of Biomedical Optics, 2020
Ultrafast fiber lasers are an attractive alternative to bulk lasers for nonlinear optical microscopy for their compactness and low cost. The high relative intensity noise (RIN) of these lasers poses a challenge for pump-probe measurements such as transient absorption and stimulated Raman scattering, along with modalities that provide label-free ...
Wang, Erkang, Gupta, Saurabh, Wilson, Jesse W.   +2 more
openaire   +2 more sources

Nonlinear Optical Studies of Gold Nanoparticle Films

Nanomaterials, 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, Ganjaboy S. Boltaev, Rashid A. Ganeev, Yue Fu, Sandeep Kumar Maurya, Vyacheslav V. Kim, Konda Srinivasa Rao, Chunlei Guo   +7 more
doaj   +1 more source