Results 71 to 80 of about 491,361 (291)

Phase-field modeling of shock initiation in β-HMX: From hotspot growth to steady detonation [PDF]

open access: yesMatter and Radiation at Extremes
Understanding how hotspots affect detonation in energetic materials has important scientific and engineering value. The unique material properties of energetic materials impose limitations on research methods, particularly concerning the dynamic ...
Chengbo Wu   +4 more
doaj   +1 more source

Determining particle density using known material Hugeniot curves [PDF]

open access: yes, 1974
A method is detailed to determine the density of particles wherein the closing velocity is known between the impacting particles and a plate of known material.
Dibattista, J. D.
core   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

open access: yesAdvanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela   +4 more
wiley   +1 more source

Elastic-plastic coupled α→ω phase transformation of zirconium under shock loading: experiments and non-hydrostatic thermodynamic-based modeling

open access: yesJournal of Materials Research and Technology
Modeling the martensitic transformation of solid materials under shock loading is still an unsolved problem. One of the key challenges is the effect of shear stress and elastoplastic coupling on the dynamic response.
Ying-Hua Li   +4 more
doaj   +1 more source

On Reflection of Shock Waves from Boundary Layers [PDF]

open access: yes, 1952
Measurements of the reflection characteristics of shock waves from a flat surface with a laminar and turbulent boundary layer are presented. The investigations were carried out at Mach numbers from about 1.3 to 1.5 and a Reynolds number of 0.9 x 10^4.
Dhawan, S., Liepmann, H. W., Roshko, A.
core   +1 more source

Surface Passivation of HgTe Nanocrystals Enabling EG/2 Open‐Circuit Voltage and Their Coupling to Dielectric Cavity for Narrow Detection

open access: yesAdvanced Materials, EarlyView.
This article explores how the integration of a thin shell, combined with optimized surface chemistry, enables the design of photodiodes based on short‐wave infrared HgTe nanocrystals. These photodiodes achieve an open‐circuit voltage greater than half the optical bandgap, which drastically reduces dark current. The article also explores the integration
Albin Colle   +17 more
wiley   +1 more source

Hyperbolic dispersion and low-frequency plasmons in electrides

open access: yesCommunications Physics
Natural hyperbolic materials have attracted significant interest in the field of photonics due to their unique optical properties. Based on the initial successful explorations on layered crystalline materials, hyperbolic dispersion was associated with ...
Qi-Dong Hao   +4 more
doaj   +1 more source

Shock accelerated vortex ring [PDF]

open access: yes, 2009
The interaction of a shock wave with a spherical density inhomogeneity leads to the development of a vortex ring through the impulsive deposition of baroclinic vorticity.
Anderson, M.   +5 more
core  

Self-similar wave breaking in dispersive Korteweg-de Vries hydrodynamics

open access: yes, 2018
We discuss the problem of breaking of a nonlinear wave in the process of its propagation into a medium at rest. It is supposed that the profile of the wave is described at the breaking moment by the function $(-x)^{1/n}$ ($x0$, negative pulse) of the ...
Kamchatnov, A. M.
core   +1 more source

Crack Repair in Hydroxyapatite Bioceramics Using an Ultraviolet Ultrafast Laser

open access: yesAdvanced Materials Interfaces, EarlyView.
The study proposes an ultrafast ultraviolet laser approach to repair hidden tooth cracks, which has been preliminarily validated on HAP. Moreover, this technique aims to strengthen the native enamel structure rather than introducing a foreign filling material.
Yan Xue   +6 more
wiley   +1 more source

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