scholarly journals High-Energy Nitramine Explosives: A Design Strategy from Linear to Cyclic to Caged Molecules

ACS Omega ◽  
2018 ◽  
Vol 3 (8) ◽  
pp. 9739-9745 ◽  
Author(s):  
Junqing Yang ◽  
Guixiang Wang ◽  
Xuedong Gong ◽  
Jianguo Zhang ◽  
Yan Alexander Wang
Keyword(s):  
Design Strategy ◽  
High Energy ◽  
Caged Molecules

Searching for a new family of high energy explosives by introducing N atoms, N-oxides, and NO2 into a cage adamantane

2016 ◽  
Vol 94 (8) ◽  
pp. 667-673 ◽  
Author(s):  
Dong Xiang ◽  
Hao Chen ◽  
Weihua Zhu ◽  
Heming Xiao
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Design Strategy ◽  
High Energy ◽  
Impact Sensitivity ◽  
Lower Sensitivity ◽  
Detonation Properties ◽  
Potential Candidate ◽  
Functional Theory ◽  
New Family

A design strategy that including N atoms, N-oxides, and nitro groups into a cage azaadamantane at the same time was used to design 10 polyazaoxyadamantanes (PAOAs) and eight polynitroazaoxyadamantanes (PNTAOAs). First, four stable azaadamantanes were built by replacing the tertiary C atoms of an adamantane with N atoms. Then, 10 PAOAs were designed by introducing one to four N-oxides into the four azaadamantanes. After that, eight PNTAOAs were formed when the H atoms of four N-oxide-substituted azaadamantanes were replaced with different numbers of nitro groups. Finally, their heats of formation, densities, detonation properties, and impact sensitivity were estimated by using density functional theory. Among the eight PNTAOAs, seven compounds had better detonation performances than CL-20, the outstanding, novel, high-energy, and relatively insensitive cage explosive. Two compounds had higher detonation performance and lower sensitivity than CL-20 and HMX, suggesting that their overall performances are outstanding and they may be considered as the potential candidate of high-energy explosives.

A design strategy for a high-energy Tm,Ho: YLF laser transmitter

2014 ◽  
Author(s):  
Atsushi Sato ◽  
Kazuhiro Asai ◽  
Yoshiki Miyake ◽  
Shoken Ishii ◽  
Kohei Mizutani ◽  
...  
Keyword(s):  
Design Strategy ◽  
High Energy ◽  
Laser Transmitter

Design strategy of barium titanate/polyvinylidene fluoride-based nanocomposite films for high energy storage

2020 ◽  
Vol 8 (3) ◽  
pp. 884-917 ◽  
Author(s):  
Yan Wang ◽  
Minggang Yao ◽  
Rong Ma ◽  
Qibin Yuan ◽  
Desuo Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Energy Storage ◽  
Barium Titanate ◽  
Nanocomposite Film ◽  
Polyvinylidene Fluoride ◽  
Design Strategy ◽  
High Energy ◽  
Nanocomposite Films ◽  
Electronic Components ◽  
High Energy Storage

Barium titanate/polyvinylidene fluoride- (BT/PVDF-) based nanocomposite film exhibits excellent energy storage and mechanical properties and can be used as flexible electronic components.

scholarly journals Potassium-Based α-Manganese Dioxide Nanofiber Binder-Free Self-Supporting Electrodes: A Design Strategy for High Energy Density Batteries

2016 ◽  
Vol 4 (11) ◽  
pp. 1358-1368 ◽  
Author(s):  
Altug S. Poyraz ◽  
Jianping Huang ◽  
Lijun Wu ◽  
David C. Bock ◽  
Yimei Zhu ◽  
...  
Keyword(s):  
Energy Density ◽  
Manganese Dioxide ◽  
Design Strategy ◽  
High Energy ◽  
High Energy Density ◽  
Binder Free

A design strategy for suppression of hole-pattern artifacts in high-energy collimators

2006 ◽  
Vol 53 (3) ◽  
pp. 1179-1187 ◽  
Author(s):  
A.R. Formiconi ◽  
Donald Lee Gunter ◽  
E. Vanzi
Keyword(s):  
Design Strategy ◽  
High Energy

From mono-rings to bridged bi-rings to caged bi-rings: A promising design strategy for all-nitrogen high-energy-density materials N10 and N12

2021 ◽  
Author(s):  
Qing Lang ◽  
Qi Sun ◽  
Yuangang Xu ◽  
Pengcheng Wang ◽  
Qiuhan Lin ◽  
...  
Keyword(s):  
Energy Density ◽  
Design Strategy ◽  
High Energy ◽  
High Energy Density ◽  
Nitrogen Compounds ◽  
High Energy Density Materials ◽  
High Energy Density Material

The research of all-nitrogen compounds has been always a hot topic in nitrogen chemistry and high-energy-density material communities. Today’s research mainly focuses on acyclic and monocyclic all-nitrogen derivatives, while the...

The E-ring: interactions with plasma and implications for its evolution

1984 ◽  
Vol 75 ◽  
pp. 599-602
Author(s):  
T.V. Johnson ◽  
G.E. Morfill ◽  
E. Grun
Keyword(s):  
Time Scale ◽  
Particle Density ◽  
High Energy ◽  
Particle Removal ◽  
Density Region ◽  
Drag Forces ◽  
Orbit Evolution ◽  
History Of ◽  
Ring Particle ◽  
Ring Material

A number of lines of evidence suggest that the particles making up the E-ring are small, on the order of a few microns or less in size (Terrile and Tokunaga, 1980, BAAS; Pang et al., 1982 Saturn meeting; Tucson, AZ). This suggests that a variety of electromagnetic and plasma affects may be important in considering the history of such particles. We have shown (Morfill et al., 1982, J. Geophys. Res., in press) that plasma drags forces from the corotating plasma will rapidly evolve E-ring particle orbits to increasing distance from Saturn until a point is reached where radiation drag forces acting to decrease orbital radius balance this outward acceleration. This occurs at approximately Rhea's orbit, although the exact value is subject to many uncertainties. The time scale for plasma drag to move particles from Enceladus' orbit to the outer E-ring is ~104yr. A variety of effects also act to remove particles, primarily sputtering by both high energy charged particles (Cheng et al., 1982, J. Geophys. Res., in press) and corotating plasma (Morfill et al., 1982). The time scale for sputtering away one micron particles is also short, 102 - 10 yrs. Thus the detailed particle density profile in the E-ring is set by a competition between orbit evolution and particle removal. The high density region near Enceladus' orbit may result from the sputtering yeild of corotating ions being less than unity at this radius (e.g. Eviatar et al., 1982, Saturn meeting). In any case, an active source of E-ring material is required if the feature is not very ephemeral - Enceladus itself, with its geologically recent surface, appears still to be the best candidate for the ultimate source of E-ring material.

Analysis of electron-diffraction intensity profiles using a photodiode-array detection system

1983 ◽  
Vol 41 ◽  
pp. 322-323
Author(s):  
J. B. Warren
Keyword(s):  
Electron Diffraction ◽  
Diffraction Pattern ◽  
Detection System ◽  
High Energy ◽  
Photographic Emulsion ◽  
Diffraction Intensity ◽  
Silicon Photodiode ◽  
Photodiode Array Detection ◽  
Analog To Digital ◽  
Photodiode Array

Electron diffraction intensity profiles have been used extensively in studies of polycrystalline and amorphous thin films. In previous work, diffraction intensity profiles were quantitized either by mechanically scanning the photographic emulsion with a densitometer or by using deflection coils to scan the diffraction pattern over a stationary detector. Such methods tend to be slow, and the intensities must still be converted from analog to digital form for quantitative analysis. The Instrumentation Division at Brookhaven has designed and constructed a electron diffractometer, based on a silicon photodiode array, that overcomes these disadvantages. The instrument is compact (Fig. 1), can be used with any unmodified electron microscope, and acquires the data in a form immediately accessible by microcomputer.Major components include a RETICON 1024 element photodiode array for the de tector, an Analog Devices MAS-1202 analog digital converter and a Digital Equipment LSI 11/2 microcomputer. The photodiode array cannot detect high energy electrons without damage so an f/1.4 lens is used to focus the phosphor screen image of the diffraction pattern on to the photodiode array.

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