Results 61 to 70 of about 103,028 (311)

Study on Influence of Gas Drainage on Spontaneous Combustion “Three Zones” of Goaf in Shallow Buried Deep and High Gas Working Face

open access: yesMeikuang Anquan, 2020
Take Wuhushan Coal Mine 010908 working face as the background, theoretical analysis, numerical simulation and field measurement are used to study the influence of shallow buried depth gas working face gas drainage on goaf spontaneous combustion “three ...
WANG Weidong , WANG Wei, LI Peng, WANG Gang
doaj   +1 more source

High-fidelity formation of deeply bound ultracold molecules via non-Hermitian shortcut to adiabaticity

open access: yesNew Journal of Physics, 2021
Stimulated Raman adiabatic passage allows robust transfer between two ends of a three-state quantum system and has been employed to transfer weakly bound Feshbach molecules into their deeply bound rovibrational ground state.
Jia-Hui Zhang, Fu-Quan Dou
doaj   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Spontaneous Photon Emission in Cavities

open access: yesEPJ Web of Conferences, 2014
We investigate spontaneous photon emission processes of two-level atoms in parabolic and ellipsoidal cavities thereby taking into account the full multimode scenario.
Alber G., Griebe N.
doaj   +1 more source

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

open access: yesAdvanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand   +5 more
wiley   +1 more source

Coherent Control of Quantum Entropy via Quantum Interference in a Four-Level Atomic System [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2013
The time evaluation of quantum entropy in a four-level double- type atomic system is theoretically investigated. Quantum entanglement of the atom and its spontaneous emission fields is then discussed via quantum entropy.
M. Sahrai   +3 more
doaj  

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

open access: yesAdvanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa   +19 more
wiley   +1 more source

Detailed description of spontaneous emission [PDF]

open access: yesJournal of Modern Optics, 2012
13 pages, no figures, title, abstract and Introduction are changed, one reference added, the main results ...
openaire   +2 more sources

Single-mode tunable laser emission in the single-exciton regime from colloidal nanocrystals

open access: yes, 2013
Whispering-gallery-mode resonators have been extensively used in conjunction with different materials for the development of a variety of photonic devices.
Brambilla, Gilberto   +7 more
core   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

open access: yesAdvanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim   +6 more
wiley   +1 more source

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