Results 11 to 20 of about 1,839,565 (301)

Underdamped longitudinal soft modes in ionic crystallites—lattice and charge motions observed by ultrafast x-ray diffraction [PDF]

open access: yesStructural Dynamics, 2022
Soft modes in crystals are lattice vibrations with frequencies that decrease and eventually vanish as the temperature approaches a critical point, e.g., a structural change due to a phase transition.
Isabel Gonzalez-Vallejo   +4 more
doaj   +2 more sources

Electrically Controlled Soft Actuators with Multiple and Reprogrammable Actuation Modes

open access: yesAdvanced Intelligent Systems, 2020
New forms of soft actuators have enabled the construction of novel soft robots with various functionalities. Though previous researches have successfully fabricated soft actuators with diverse actuation modes, their actuation capabilities are often fixed
Yang Wang   +4 more
doaj   +2 more sources

SOFT MODE CONTRIBUTION TO PATH INTEGRALS [PDF]

open access: yesInternational Journal of Modern Physics A, 1993
A method for nonperturbative path integral calculation is proposed. Quantum mechanics as the simplest example of a quantum field theory is considered. All modes are decomposed into hard (with frequencies [Formula: see text]) and soft (with frequencies [Formula: see text]) ones, where ω0 is some parameter.
Belyaev, Vladimir
openaire   +4 more sources

Entanglement, soft modes, and celestial CFT

open access: yesJournal of High Energy Physics
We revisit the calculation of vacuum entanglement entropy in free Maxwell theory in four-dimensional Minkowski spacetime. Weyl invariance allows for this theory to be embedded as a patch inside the Einstein static universe. We use conformal inversions to
Hong Zhe Chen   +2 more
doaj   +5 more sources

Soft-Switched Three-Port DC-DC Converter With Simple Auxiliary Circuit

open access: yesIEEE Access, 2021
In this paper, a new high efficiency soft-switching non-isolated three-port converter (TPC) is proposed. In the conventional TPC, three switches are required to process power in different directions between inputs and output.
Rasoul Faraji   +4 more
doaj   +3 more sources

Soft edges: the many links between soft and edge modes [PDF]

open access: yesJournal of High Energy Physics
Boundaries in gauge theory and gravity give rise to symmetries and charges at both finite and asymptotic distance. Due to their structural similarities, it is often held that soft modes are some kind of asymptotic limit of edge modes.
Gonçalo Araujo-Regado   +3 more
doaj   +3 more sources

Temperature phase transitions in Rb2KRe3+F6 elpasolites - Raman spectroscopy study

open access: yesMaterials and Devices, 2021
Phase transitions in crystals of fluorine-containing elpasolites are investigated by Raman scattering spectroscopy. It was found that lattice instabilities in these crystals are induced by soft mode condensations, while restorations of these modes in ...
Alexander N VTYURIN   +5 more
doaj   +6 more sources

On the degenerated soft-mode instability [PDF]

open access: yesJournal of Physics A: Mathematical and General, 1998
We consider instabilities of a single mode with finite wavenumber in inversion symmetric spatially one dimensional systems, where the character of the bifurcation changes from sub- to supercritical behaviour. Starting from a general equation of motion the full amplitude equation is derived systematically and formulas for the dependence of the ...
Just, W., Matthäus, F., Sauermann, H.
openaire   +4 more sources

A modified failure modes and effects analysis using interval-valued spherical fuzzy extension of TOPSIS method: case study in a marble manufacturing facility [PDF]

open access: yes, 2021
Failure modes and effects analysis (FMEA) is a commonly used step-by-step approach to assess potential failures existing in a product or process design.
Gul, Muhammet   +2 more
core   +1 more source

Soft matter analysis via atomic force microscopy (AFM): A review

open access: yesApplied Surface Science Advances, 2023
Soft materials or soft condensed matter are being globally developed for various technological applications for chemical, consumer goods, pharmaceutical, agri-business, and petroleum industries.
A.M. Joshua, G. Cheng, E.V. Lau
doaj   +1 more source

Home - About - Disclaimer - Privacy