Results 21 to 30 of about 4,330,694 (342)

Temperature-Dependent Dual Fluorescence from Small Organic Molecules

open access: yesOrganic Materials, 2022
The temperature-dependent dual fluorescence from a single component of small organic molecules (SOMs) is very promising for the ratiometric fluorescence sensing of temperature. However, the SOM-based fluorophores typically only show one fluorescence band.
Min Wang, Run-Ze Wang, Cui-Hua Zhao
doaj   +1 more source

Review of Photonic Integrated Optical Phased Arrays for Space Optical Communication

open access: yesIEEE Access, 2020
A review of photonic integrated optical phased array (OPA) for space optical communication is presented. We review and summarize the typical works of the photonic integrated OPAs with one-dimensional and two-dimensional optical antenna array in recent ...
Jingwen He, Tao Dong, Yue Xu
doaj   +1 more source

Probing the superconducting ground state of the rare-earth ternary boride superconductors $R$RuB$_2$ ($R$ = Lu,Y) using muon-spin rotation and relaxation [PDF]

open access: yes, 2018
The superconductivity in the rare-earth transition metal ternary borides $R$RuB$_2$ (where $R$ = Lu and Y) has been investigated using muon-spin rotation and relaxation.
Barker, Joel A. T.   +3 more
core   +2 more sources

The role of Ta on twinnability in nanocrystalline Cu–Ta alloys

open access: yesMaterials Research Letters, 2017
Nanostructured Cu–Ta alloys show promise as high-strength materials in part due to their limited grain growth. In the present study, we elucidate the role of Ta on the transition from deformation twinning to dislocation-mediated slip mechanisms in ...
M. A. Bhatia   +4 more
doaj   +1 more source

Electronic ground state of Ni2+ [PDF]

open access: yesThe Journal of Chemical Physics, 2016
The Φ9/24 ground state of the Ni2+ diatomic molecular cation is determined experimentally from temperature and magnetic-field-dependent x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap, where an electronic and rotational temperature of 7.4±0.2 K was reached by buffer gas cooling of the molecular ion.
Leistner, G.   +6 more
openaire   +4 more sources

Ground state on the dumbbell graph [PDF]

open access: yes, 2016
We consider standing waves in the focusing nonlinear Schr\"odinger (NLS) equation on a dumbbell graph (two rings attached to a central line segment subject to the Kirchhoff boundary conditions at the junctions).
Marzuola, Jeremy L.   +1 more
core   +3 more sources

Graphene ground states [PDF]

open access: yesZeitschrift für angewandte Mathematik und Physik, 2018
Graphene is locally two-dimensional but not flat. Nanoscale ripples appear in suspended samples and rolling-up often occurs when boundaries are not fixed. We address this variety of graphene geometries by classifying all ground-state deformations of the hexagonal lattice with respect to configurational energies including two- and three-body terms. As a
M Friedrich, U Stefanelli
openaire   +4 more sources

Is the ground state of Yang-Mills theory Coulombic? [PDF]

open access: yes, 2008
We study trial states modelling the heavy quark-antiquark ground state in SU(2) Yang-Mills theory. A state describing the flux tube between quarks as a thin string of glue is found to be a poor description of the continuum ground state; the infinitesimal
A. Ilderton   +9 more
core   +3 more sources

Groundstate for the Schrödinger-Poisson-Slater equation involving the Coulomb-Sobolev critical exponent

open access: yesAdvances in Nonlinear Analysis, 2023
In this article, we study the existence of ground state solutions for the Schrödinger-Poisson-Slater type equation with the Coulomb-Sobolev critical growth: −Δu+14π∣x∣∗∣u∣2u=∣u∣u+μ∣u∣p−2u,inR3,-\Delta u+\left(\frac{1}{4\pi | x| }\ast | u{| }^{2}\right)u=|
Lei Chunyu, Lei Jun, Suo Hongmin
doaj   +1 more source

Ground state energies of antiferromagnetic lattices [PDF]

open access: yes, 1980
Approximate values for the ground-state energy of one- and two-dimensional antiferromagnetic systems are determined with ceils of an even number of spins.
Broek, P.M. van den   +2 more
core   +4 more sources

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