Materials Literature
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Sugarcane bagasse is an abundant and sustainable resource, generated as a by-product of sugarcane milling. The cellulosic material within bagasse can be broken down into glucose molecules and fermented to produce ethanol, making it a promising feedstock for biofuel production. Mild acid pretreatment hydrolyses the hem…
At the 2011 APS conference, Terrones, Burkett and Morris published an experiment primarily designed to allow examination of the propagation of a detonation front in a 3-dimensional charge of PBX9502 insensitive high explosive (IHE). The charge is confined by a cylindrical steel shell, has an elliptical tin liner, and…
An automatic method based on MD simulations was developed for detecting and tracing the boundaries of metastable states of superheated crystal and supercooled liquid. The main criterion of the detection of early nucleation of new phase is the self-diffusion coefficient temperature dependence. The scanning for nucleati…
Numerous two-dimensional high-explosive slab tests were fielded for explosives that exhibit ideal (PBX 9501), slightly non-ideal (PBX 9502), and highly non-ideal (ANFO) detonation. Detonation velocity versus slab thickness t (thickness-effect curves) are compared to previous diameter-effect measurements obtained by va…
Experimental and numerical study for detonation propagation was conducted using the system in which the high energy materials and air gaps alternately stacked. The aim of this simulation is an extraction of information of the EOS for detonation product at arbitrary initial density from the numerical simulation with EO…
A series of experiments were performed to probe the tensile behaviour of a cold sprayed reactive metal composite material containing a mixture of nickel and aluminium. Data were acquired at two different strain rates and were collected using high speed photography, strain gauges, force-extension measurements and were…
Fragmentation results for structural energetic materials based on intermetallic forming mixtures are reviewed and the implications of the fragment populations are discussed. Cold sprayed Ni+Al and explosively compacted mixtures of Ni+Al+W and Ni+Al+W+Zr powders were fabricated into ring shaped samples and explosively…
A new type of expanding ring experiment is employed to investigate the dynamic fragmentation of multiple metal rings. The experimental platform and layout of the multiple metal rings initiation system, and fundamental principle, are detailed, and are used to conduct the dynamic loading of pure aluminium and oxygen-fre…
Abstract not provided.
Резиме: Утицај електромагнетног зрачења на једнослојне угљеничне нанотубе је\nпредмет интензивног проучавања. У оквиру ове докторске дисертације испитано\nје дејство електромагнетног зрачења из видљиве, инфрацрвене и микроталасне\nобласти на танке слојеве једнослојних угљеничних нанотуба депонованих\nвакуумском филтра…
We analyze the phase diagram of the zeroth Landau level of bilayer graphene, taking into account the realistic effects of screening of the Coulomb interaction and the strong mixing between two degenerate sublevels. We identify robust quantum Hall states at filling factors ν=-1, -4/3, -5/3, -8/5, -1/2, and discuss the…
Under hydrothermal conditions, NdCl3 center dot 6H(2)O reacts with 3-H(2)CPOA (3-H(2)CPOA=3-carboxyphenoxyacetatic acid) and phen (phen=1,10-phenanthroline), producing a novel coordination polymer [Nd(3-CPOA)(1.5)(phen)](n) (1). Complex 1 crystallizes in monoclinic space group P2(1)/c, with a=0.982 7(8), b=1.140 6(10)…
The results of recent theoretical atomic-scale studies of CHNO plastic-bonded explosive constituent materials will be presented, emphasizing the effects of static and dynamic compression on structure, vibrational spectroscopy, energy redistribution, and dynamic deformation processes. Among the chemical compounds to be…
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to "Enhanced Electron-Transfer Reactivity of Nonheme Manganese(IV)–Oxo Complexes by Binding Scandium Ions"Heejung Yoon, Yong-Min Lee, Xiujuan Wu, Kyung-Bin Cho, Ritimukta Sarangi, Wonwoo Nam*, and Shunichi Fukuzum…
Un ballon de baudruche est place sur une bouteille d’eau gazeuse qui vient juste d’etre debouchee. Le gaz carbonique dissous dans l’eau se libere et vient gonfler le ballon.
Humans in space suffer from losses of bone mass accompanied by bone restructuration. The structural adaption depends on prevailing loading conditions. It can be assumed that the resulting structure is optimized with respect to the given restrictions, which are governed by biological mechanisms. It is not understood ho…
Avec un peu d’habilete, on peut facilement faire flotter a la surface de l’eau des objets metalliques (aiguilles, punaises etc…) qui normalement devraient tomber au fond du recipient. Cette experience met en evidence les forces de tension superficielle existant a la surface de tout liquide.
We have subjected the aluminium alloy 7010-T7651 to shock loading. A heterodyne velocimeter system was used to interrogate both the HEL and dynamic tensile failure (spall). It was shown that the HEL in the short transverse direction is higher than in the longitudinal direction whereas the spall strength is higher in t…
A polycrystalline sample compressed in a diamond anvil cell (DAC) without any pressure transmitting medium develops a stress state at the centre of the sample that is axially symmetric about the load axis. The axial stress component is larger than the radial component and the difference t between the two is taken as a…
In this chapter we investigate the structural and electronic properties of Au-induced self-organized nanowires on Ge(001), prepared by two different procedures, at room temperature and 77 K. We find that the Au-induced nanostructures are identical for the different preparation procedures. The Au-induced nanowires are…