Results 11 to 20 of about 1,656,273 (329)

Charge-transfer excitation: unconventional yet practical means for controlling stereoselectivity in asymmetric photoreactions.

open access: yesChemical Society Reviews, 2013
In chiral donor-acceptor (D-A) systems, irradiation wavelength plays vital roles in determining the photochemical consequences. Selective excitation of a D-A complex at the charge-transfer (C-T) band affords an excited C-T complex (ECT), while the local ...
Tadashi Mori, Y. Inoue
semanticscholar   +3 more sources

Asymmetric [3+2] Photocycloadditions of Cyclopropanes with Alkenes or Alkynes through Visible-Light Excitation of Catalyst-Bound Substrates.

open access: yesAngewandte Chemie - International Edition, 2018
Xiaoqiang Huang   +6 more
semanticscholar   +3 more sources

Motion induced by asymmetric excitation of the quantum vacuum [PDF]

open access: yesPhysical Review D, 2020
During the last fifty-one years, the effect of excitation of the quantum vacuum field induced by its coupling with a moving object has been systematically studied. Here, we propose and investigate a somewhat inverted setting: an object, initially at rest,
Jeferson Danilo L. Silva   +3 more
semanticscholar   +1 more source

Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise

open access: yesApplied Sciences, 2021
In this paper, we investigate the response of asymmetric potential monostable energy harvesters (MEHs) excited by color noise and band-limited noise.
Shuangyan Liu, Wei Wang
doaj   +1 more source

Effects of Asymmetric Vane Pitch on Reducing Low-Engine-Order Forced Response of a Turbine Stage

open access: yesAerospace, 2022
Asymmetric vane pitch is a key technique to suppress the forced response of downstream rotor blades. To address the problem of low-engine-order (LEO) excitation with high amplitude under an asymmetric configuration (half-and-half layout) widely ...
Yun Zheng, Xiubo Jin, Hui Yang
doaj   +1 more source

Asymmetric surface wave excitation through metasurface-edge diffraction [PDF]

open access: yesOptics Letters, 2020
The selective excitation of localized surface wave modes remains a challenge in the design of both leaky-wave and bound-wave devices. In this Letter, we show how the truncation of a metasurface can play an important role in breaking the spatial inversion symmetry in the excitation of surface waves supported by the structure. This is done by combining a
Miguel Camacho   +2 more
openaire   +5 more sources

Collective excitations in asymmetric parabolic quantum wells [PDF]

open access: yesSolid State Communications, 1994
9 pages, LaTeX, 4 figures available upon request, PIT-SDS ...
Tamborenea, P. I., Sarma, S. Das
openaire   +2 more sources

Bidirectional flow of two-dimensional dusty plasma under asymmetric periodic substrates driven by unbiased external excitations

open access: yesPhysical Review Research, 2023
Collective transport properties of a one-dimensional (1D) asymmetric periodic substrate modulated two-dimensional (2D) dusty plasma driven by an unbiased sinusoidal excitation force are investigated using Langevin dynamical simulations.
Wei Li   +4 more
doaj   +1 more source

High Sensitivity Fiber Refractive Index Sensors Based on Asymmetric Supermodes Interference in Tapered Four Core Fiber

open access: yesPhotonics, 2022
We demonstrate high sensitivity fiber refractive index (RI) sensor based on asymmetric supermode interferences in tapered four core fiber (TFCF).
Lina Suo   +5 more
doaj   +1 more source

Asymmetric Excitation of Surface Plasmon Polaritons via Paired Slot Antennas for Angstrom Displacement Sensing.

open access: yesPhysical Review Letters, 2020
Optical antennas enable efficient coupling between propagating light and bonding electromagnetic waves like surface plasmon polaritons (SPPs). Under the illumination of inhomogeneous optical fields, propagating SPPs mediated by multimode antennas could ...
Tianyang Zang   +6 more
semanticscholar   +1 more source

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