1-Nitro-2-trinitromethyl substituted imidazoles: a new family of high performance energetic materials

2016 ◽  
Vol 4 (45) ◽  
pp. 17791-17800 ◽  
Author(s):  
Yuangang Xu ◽  
Cheng Shen ◽  
Qiuhan Lin ◽  
Pengcheng Wang ◽  
Chao Jiang ◽  
...  
Keyword(s):  
Energetic Materials ◽  
High Performance ◽  
New Family ◽  
Low Sensitivity

A series of trinitromethyl-substituted imidazole energetic materials that achieved a fine balance between high performance and low sensitivity were synthesized.

scholarly journals Compatibility Study of 1,1-Diamino-2,2-Dinitroethene (FOX-7) with Some Energetic Materials

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Yuan-ping Zhang ◽  
Cong-hua Hou ◽  
Xin-lei Jia ◽  
Ying-xin Tan ◽  
Jing-yu Wang
Keyword(s):  
Energetic Materials ◽  
High Performance ◽  
Binary Systems ◽  
Compatibility Study ◽  
Scanning Calorimetry ◽  
Vacuum Stability ◽  
Dsc Measurements ◽  
Vacuum Stability Test ◽  
Low Sensitivity ◽  
Thermal Technique

1,1-diamino-2,2-dinitroethene (FOX-7) is a novel explosive with low sensitivity and high performance. The compatibility of FOX-7 with nine common energetic materials including hexanitrohexazaisowurtzitane (CL-20), cyclotetramethylenetetranitramine (HMX), cyclotrimethylenetrinitramine (RDX), 3,4-dinitrofurazanfuroxan (DNTF), 3-nitro-1,2,4-triazol-5-one (NTO), hexanitrostilbene (HNS-II), 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105), 2,4,6-triamino-1,3,5-trinitrobenzene (TATB), and 2,4,6-trinitrotoluene (TNT) were tested by differential scanning calorimetry (DSC) and the vacuum stability test (VST) as the thermal technique and X-ray diffractometry (XRD) as a nonthermal technique. DSC measurements showed that the binary systems of FOX-7/CL-20, FOX-7/HMX, FOX-7/NTO, and FOX-7/TNT were compatible in grade of A, the systems of FOX-7 with heat-resistant explosives including HNS-II, LLM-105, and TATB were compatible as well in grade of A-B, and the binary systems of FOX-7/DNTF and FOX-7/RDX had poor compatibility. VST results indicated that FOX-7 was compatible with nine energetic materials. Besides, the compatibility results of the thermal analysis were confirmed by the XRD technique.

Amino-nitramino functionalized triazolotriazines: a good balance between high energy and low sensitivity

2018 ◽  
Vol 47 (41) ◽  
pp. 14483-14490 ◽  
Author(s):  
Jinchao Ma ◽  
Guangbin Cheng ◽  
Xuehai Ju ◽  
Zhenxin Yi ◽  
Shunguan Zhu ◽  
...  
Keyword(s):  
Energetic Materials ◽  
High Performance ◽  
Energy Content ◽  
High Energy ◽  
Design Concept ◽  
Good Balance ◽  
Low Sensitivity

Amino-nitramino functionalized triazolotriazines with high-energy content and low sensitivity are reported, presenting a potential design concept for high-performance insensitive energetic materials.

Synthesis of high-performance insensitive energetic materials based on nitropyrazole and 1,2,4-triazole

2019 ◽  
Vol 43 (28) ◽  
pp. 11157-11163 ◽  
Author(s):  
Minxian Xu ◽  
Guangbin Cheng ◽  
Hualin Xiong ◽  
Bohan Wang ◽  
Xuehai Ju ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Energetic Materials ◽  
High Performance ◽  
Triazole Derivatives ◽  
New Family ◽  
Energetic Salts ◽  
Positive Effect

A new family of symmetric nitropyrazole and 1,2,4-triazole derivatives and its energetic salts were obtained. The positive effect of ternary hydrogen bonds improve the performances of target compounds.

Polynitro-substituted bispyrazoles: a new family of high-performance energetic materials

2014 ◽  
Vol 2 (42) ◽  
pp. 18097-18105 ◽  
Author(s):  
Chuan Li ◽  
Lixuan Liang ◽  
Kai Wang ◽  
Chengming Bian ◽  
Jun Zhang ◽  
...  
Keyword(s):  
Energetic Materials ◽  
High Performance ◽  
New Family

Nitrogen-rich salts based on polyamino substituted N,N′-azo-1,2,4-triazole: a new family of high-performance energetic materials

2014 ◽  
Vol 2 (38) ◽  
pp. 15978-15986 ◽  
Author(s):  
Wei Liu ◽  
Sheng-hua Li ◽  
Yu-chuan Li ◽  
Yu-zhang Yang ◽  
Yi Yu ◽  
...  
Keyword(s):  
Energetic Materials ◽  
High Performance ◽  
New Family ◽  
Energetic Salts

A new family of high performance, nitrogen-rich energetic salts containing N,N′-azo linkage were synthesized through the protonation of 3,3′-diamino-4,4′-azobis-1,2,4-triazole.

Co-planar two-dimensional Metal-Insulator-Semiconductor Capacitor: Numerical study of the device electrostatics.

2017 ◽  
Author(s):  
Varun Bheemireddy
Keyword(s):  
Space Charge ◽  
High Performance ◽  
Numerical Study ◽  
2D Materials ◽  
Space Charge Density ◽  
Two Dimensional ◽  
Short Channel ◽  
Metal Insulator ◽  
Metal Insulator Semiconductor ◽  
New Family

The two-dimensional(2D) materials are highly promising candidates to realise elegant and e cient transistor. In the present letter, we conjecture a novel co-planar metal-insulator-semiconductor(MIS) device(capacitor) completely based on lateral 2D materials architecture and perform numerical study of the capacitor with a particular emphasis on its di erences with the conventional 3D MIS electrostatics. The space-charge density features a long charge-tail extending into the bulk of the semiconductor as opposed to the rapid decay in 3D capacitor. Equivalently, total space-charge and semiconductor capacitance densities are atleast an order of magnitude more in 2D semiconductor. In contrast to the bulk capacitor, expansion of maximum depletion width in 2D semiconductor is observed with increasing doping concentration due to lower electrostatic screening. The heuristic approach of performance analysis(2D vs 3D) for digital-logic transistor suggest higher ON-OFF current ratio in the long-channel limit even without third dimension and considerable room to maximise the performance of short-channel transistor. The present results could potentially trigger the exploration of new family of co-planar at transistors that could play a signi significant role in the future low-power and/or high performance electronics.<br>

scholarly journals Molecular Dynamics Simulation of the Influence of RDX Internal Defects on Sensitivity

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 329
Author(s):  
Pengmin Yan ◽  
Xue Zhao ◽  
Jiuhou Rui ◽  
Juan Zhao ◽  
Min Xu ◽  
...  
Keyword(s):  
Energetic Materials ◽  
Low Cost ◽  
Relative Sensitivity ◽  
Dynamics Simulation ◽  
Safety Properties ◽  
Internal Defects ◽  
X Ray ◽  
X Ray Computed ◽  
Low Sensitivity ◽  
Higher Sensitivity

The internal defect is an important factor that could influence the energy and safety properties of energetic materials. RDX samples of two qualities were characterized and simulated to reveal the influence of different defects on sensitivity. The internal defects were characterized with optical microscopy, Raman spectroscopy and microfocus X-ray computed tomography technology. The results show that high-density RDX has fewer defects and a more uniform distribution. Based on the characterization results, defect models with different defect rates and distribution were established. The simulation results show that the models with fewer internal defects lead to shorter N-NO2 maximum bond lengths and greater cohesive energy density (CED). The maximum bond length and CED can be used as the criterion for the relative sensitivity of RDX, and therefore defect models doped with different solvents are established. The results show that the models doped with propylene carbonate and acetone lead to higher sensitivity. This may help to select the solvent to prepare low-sensitivity RDX. The results reported in this paper are aiming at the development of a more convenient and low-cost method for studying the influence of internal defects on the sensitivity of energetic materials.

scholarly journals Plasmonic semiconductor nanogroove array enhanced broad spectral band millimetre and terahertz wave detection

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Jinchao Tong ◽  
Fei Suo ◽  
Tianning Zhang ◽  
Zhiming Huang ◽  
Junhao Chu ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
High Performance ◽  
Room Temperature ◽  
Spectral Band ◽  
High Capacity ◽  
Terahertz Wave ◽  
Semiconductor Surface ◽  
Wide Range ◽  
Low Sensitivity ◽  
Air Interfaces

AbstractHigh-performance uncooled millimetre and terahertz wave detectors are required as a building block for a wide range of applications. The state-of-the-art technologies, however, are plagued by low sensitivity, narrow spectral bandwidth, and complicated architecture. Here, we report semiconductor surface plasmon enhanced high-performance broadband millimetre and terahertz wave detectors which are based on nanogroove InSb array epitaxially grown on GaAs substrate for room temperature operation. By making a nanogroove array in the grown InSb layer, strong millimetre and terahertz wave surface plasmon polaritons can be generated at the InSb–air interfaces, which results in significant improvement in detecting performance. A noise equivalent power (NEP) of 2.2 × 10−14 W Hz−1/2 or a detectivity (D*) of 2.7 × 1012 cm Hz1/2 W−1 at 1.75 mm (0.171 THz) is achieved at room temperature. By lowering the temperature to the thermoelectric cooling available 200 K, the corresponding NEP and D* of the nanogroove device can be improved to 3.8 × 10−15 W Hz−1/2 and 1.6 × 1013 cm Hz1/2 W−1, respectively. In addition, such a single device can perform broad spectral band detection from 0.9 mm (0.330 THz) to 9.4 mm (0.032 THz). Fast responses of 3.5 µs and 780 ns are achieved at room temperature and 200 K, respectively. Such high-performance millimetre and terahertz wave photodetectors are useful for wide applications such as high capacity communications, walk-through security, biological diagnosis, spectroscopy, and remote sensing. In addition, the integration of plasmonic semiconductor nanostructures paves a way for realizing high performance and multifunctional long-wavelength optoelectrical devices.

Fuzzy System for DOA Estimation of Coherent Signals

2013 ◽  
Vol 427-429 ◽  
pp. 575-581
Author(s):  
Ya Ling Chen ◽  
Chien Chou Lin
Keyword(s):  
Fuzzy System ◽  
High Performance ◽  
Expert Knowledge ◽  
Doa Estimation ◽  
Coherent Signals ◽  
Fuzzy Logic Systems ◽  
Significant Performance ◽  
And Performance ◽  
Low Sensitivity ◽  
Resolution Estimation

This paper presents an efficient direction-of-arrival (DOA) Estimator for dealing with coherent signals. The empirical results show that significant performance degradation occurs when coherent signals coexist. Therefore, an utilizes the low sensitivity of Bartlett algorithm in estimation of DOAs for coherent signals to yield a low-resolution estimation of DOAs as initial search angle and uses fuzzy logic systems with incorporating expert knowledge to improve the resolution and performance of estimation of DOAs in coherent signals environment. Finally, numerical example was analyzed to illustrate high performance of the proposed method and to confirm the designed procedure.

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