Results 11 to 20 of about 697,288 (293)

Ultrafast photoinduced dynamics of a donor-( $$\mathrm \pi$$ π )bridge-acceptor based merocyanine dye

open access: yesScientific Reports, 2022
Merocyanine dyes are of great interest amongst researchers due to their nonlinear optical (NLO) properties and solvatochromism. Molecular structure of these dyes constitutes conjugated pathway between the donor and acceptor substituents, with lowest ...
Jianwei Shen   +10 more
doaj   +1 more source

CARTESIAN AXIS AND PLANE CONVENTIONS IN Cnv SYMMETRY GROUPS

open access: yesQuímica Nova, 2021
In this work, we call the attention to the ambiguity found in the literature when labeling vibrations and molecular orbitals as B1 and B2 for molecules belonging to the C2v point group as, for example, the water molecule.
Lucas A. L. Dias, Roberto B. Faria
doaj   +1 more source

Atomistic characterization of the dispersed liquid droplet in immiscible Al–Pb alloy

open access: yesJournal of Materials Research and Technology, 2021
This study develops an atomistic simulation-based methodology for studying the dispersed droplet phase in immiscible alloy. The methodology is applied to the immiscible Al–Pb alloy liquid droplet system to study the temperature and curvature effects on ...
Xiang-Ming Ma   +5 more
doaj   +1 more source

Exploring Femtosecond Laser Ablation by Snapshot Ultrafast Imaging and Molecular Dynamics Simulation

open access: yesUltrafast Science, 2022
Femtosecond laser ablation (FLA) has been playing a prominent role in precision fabrication of material because of its circumvention of thermal effect and extremely high spatial resolution.
Jiali Yao   +8 more
doaj   +1 more source

Extremely High-Quality Periodic Structures on ITO Film Efficiently Fabricated by Femtosecond Pulse Train Output from a Frequency-Doubled Fabry–Perot Cavity

open access: yesNanomaterials, 2023
This study developed a novel frequency-doubled Fabry–Perot cavity method based on a femtosecond laser of 1030 nm, 190 fs, 1 mJ, and 1 kHz. The time interval (60–1000 ps) and attenuation ratio (0.5–0.9) between adjacent sub-pulses of the 515 nm pulse ...
Qilin Jiang   +7 more
doaj   +1 more source

Theoretical Study on the Ultrafast Selective Excitation of Surface-Enhanced Coherent Anti-Stokes Raman Scattering Based on Fano Resonance of Disk-Ring Nanostructures by Shaped Femtosecond Laser Pulses

open access: yesPhotonics, 2022
The enhancement and selective excitation of coherent anti-Stokes Raman scattering (CARS) and the suppression of background noise are very important problems for real-time detection at the single-molecule level.
Yingjie Xia   +7 more
doaj   +1 more source

Electron-beam spectroscopy for nanophotonics [PDF]

open access: yesNature Materials, 2019
Progress in electron-beam spectroscopies has recently enabled the study of optical excitations with combined space, energy and time resolution in the nanometer, millielectronvolt and femtosecond domain, thus providing unique access into nanophotonic structures and their detailed optical responses.
Albert Polman   +2 more
openaire   +3 more sources

Broadband Second Harmonic Generation in a z-Cut Lithium Niobate on Insulator Waveguide Based on Type-I Modal Phase Matching

open access: yesPhotonics, 2023
We numerically investigate a second harmonic generation (SHG) in a z-cut lithium niobate on insulator (LNOI) waveguide based on type-I mode phase matching (MPM) between two fundamental modes.
Changwen Wang   +5 more
doaj   +1 more source

Electronic Spectroscopy of Isolated DNA Polyanions [PDF]

open access: yes, 2018
In solution, UV-vis spectroscopy is often used to investigate structural changes in biomolecules (i.e., nucleic acids), owing to changes in the environment of their chromophores (i.e., the nucleobases).
Daly, Steven   +3 more
core   +3 more sources

Uncertainty Relation and Quantum Phase Transition in the Two-Dimensional Ising Model

open access: yesFrontiers in Physics, 2022
By using quantum renormalization group (QRG) approach, we first derive the effective Hamiltonian and QRG equations of the two-dimensional (2D) Ising models with two different time-dependent transverse magnetic fields analytically.
Yu-Yan Fang   +4 more
doaj   +1 more source

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