Micromirror Arrays for High Energy Applications

2000 ◽  
Author(s):  
Victor M. Bright ◽  
Y. C. Lee
Keyword(s):  
High Energy ◽  
Energy Applications ◽  
Micromirror Arrays

scholarly journals Carbon Substitution on N24Cages: Crossover between Triangular and Hexagonal Structures

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Carrie Sanders ◽  
Douglas L. Strout
Keyword(s):  
Theoretical Calculations ◽  
High Energy ◽  
Energy Materials ◽  
Cylindrical Structures ◽  
High Energy Materials ◽  
Energy Applications ◽  
Carbon Substitution ◽  
Complex Forms ◽  
The Stability ◽  
Carbon Inclusion

Complex forms of nitrogen are of interest for their potential as high-energy materials, but many all-nitrogen systems lack the stability for practical high-energy applications. Inclusion of carbon atoms in an otherwise all-nitrogen structure can increase stability. Nitrogen cages are known for energetically preferring cylindrical structures with triangular endcaps, but carbon cages prefer the pentagon-hexagon structure of the fullerenes. Previous calculations on N22C2have shown that carbon inclusion narrows the gap between triangular and fullerene-like structures. In the current study, three isomers of N24are used as frameworks for carbon substitution. Theoretical calculations are carried out on isomers of N20C4, N18C6, and N16C8, with the goal of determining what level of carbon substitution causes the carbon fullerene-like structures to become energetically preferred.

ULTRAFINE GRAINED AND NANOSTRUCTURED MATERIALS FOR ADVANCED ENERGY APPLICATIONS

2008 ◽  
Vol 22 (18n19) ◽  
pp. 2887-2895 ◽  
Author(s):  
CONSTANTIN POLITIS
Keyword(s):  
Ball Milling ◽  
Power Plants ◽  
Nuclear Reactor ◽  
Fission Products ◽  
High Energy ◽  
Interfacial Behavior ◽  
First Wall ◽  
Energy Applications ◽  
Ultrafine Grained ◽  
Nanoscale Interactions

The understanding of nanoscale interactions of nuclear materials will help to mastering the complex behavior of actinides and of fission products, and the interfacial behavior of fuel-cladding under extreme conditions. Ultrafine grained and nanostructured engineering materials are also suggested as protective armors on the plasma-facing first wall of D-T fusion power plants. We review the constitution and preparation by arc-melting and ball milling of ultrafine grained materials for the advanced nuclear reactor fuels UC, UC-W, UN, UN- Mo , and UN-W. We report also the preparation of the first wall armour materials nano-W, nano W-Y alloys, nano-graphite, and nano- B 4 C by high energy ball milling and their characterization by metallography, XRD, DSC and HRTEM.

Theoretical Modeling of Internal Ionic Resistance Due to SEI Layer Formation in Li/S Batteries

2015 ◽  
Vol 1774 ◽  
pp. 63-68
Author(s):  
M. Behzadirad ◽  
O. Lavrova ◽  
T. Busani
Keyword(s):  
Cycling Performance ◽  
High Energy ◽  
Internal Resistance ◽  
Layer Formation ◽  
Capacity Fading ◽  
Excellent Performance ◽  
Battery Cell ◽  
Energy Applications ◽  
Electrode Degradation ◽  
Sei Layer

ABSTRACTLi/S batteries have received too much attention due to their considerable theoretical energy density suitable for high energy applications. Here, we study the consequences of the SEI layer on internal resistance of the single battery cell due to polysulfide (PS) shuttling. The growth in resistance is related to the capacity fading of the cell. Using a model of series resistors, the total internal ionic resistance over cycling performance is expressed and compared for various nanostructured cathodes at different rates. It has been shown that SEI layer is the most significant factor in increasing of ionic resistance at the beginning of the battery aging, while electrode degradation and other phenomena are dominating resistance rise over higher cycles. We also demonstrate that cathodes with smaller equivalent porosity represent an excellent performance in preventing internal resistance enhancement.

scholarly journals CNT-Ni-Co-O based composite for Supercapacitor applications by Cyclic Voltametry analysis: A Short Quick Glimpse

2020 ◽  
Vol 17 (Issue 1) ◽  
pp. 16-24
Author(s):  
Soumya Mukherjee
Keyword(s):  
Surface Area ◽  
Hybrid Material ◽  
High Performance ◽  
Mass Density ◽  
Chemical Properties ◽  
Leading Edge ◽  
High Energy ◽  
Modern Technology ◽  
High Energy Density ◽  
Energy Applications

CNT based material are of vital importance in modern technology for their superior physical and chemical properties. In recent times, materials development for energy applications is focused for improvement of battery, capacitors, and electrodes for enhanced efficiency. High performance Supercapacitors with high energy densities are at the leading edge for renewable energy engineering device sector. CNT based Ni-Co-O material is of keen interest due to its possible applications as supercapacitors, electrocatalyst for metal/air battery and others. The hybrid material synthesis, morphological and electrochemical features are vital to evaluate the material performances for energy applications. Electrical studies are also important to evaluate the properties required for device applications. CNT is used as electrode material for electrochemical storage due to superior chemical stability, low mass density, low resistivity and large surface area. CNT replaces activated carbon material as supercapacitor due to improper balance between enhanced surface area and mesoporosity thus limiting electrolytic accessibility and capacitance. In the present article a brief review is stressed forward for the development of CNT-Ni-Co-O based hybrid material for supercapacitor high energy density applications.

Scalable compact laser diode array technology for high energy applications

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
P. Thiagarajan ◽  
S. Smith ◽  
B. Caliva ◽  
J. Helmrich ◽  
S. Das ◽  
...  
Keyword(s):  
Laser Diode ◽  
High Energy ◽  
Diode Array ◽  
Laser Diode Array ◽  
Energy Applications ◽  
Array Technology

scholarly journals Influence of aging on the heat and gas emissions from commercial lithium ion cells in case of thermal failure

2018 ◽  
Vol 8 (1) ◽  
pp. 101-110 ◽  
Author(s):  
Michael Lammer ◽  
Alexander Königseder ◽  
Peter Gluschitz ◽  
Viktor Hacker
Keyword(s):  
Early Stage ◽  
Lithium Ion ◽  
High Energy ◽  
Heat Emission ◽  
Thermal Runaway ◽  
Gas Composition ◽  
Thermal Failure ◽  
Energy Applications ◽  
Lithium Ion Cells ◽  
Li Ion

A method for thermal ramp experiments on cylindrical 18650 Li-ion cells has been established. The method was applied on pristine cells as well as on devices aged by cyclisation or by storage at elevated temperature respectively. The tested cells comprise three types of LiNi0.8Co0.15Al0.05O2 cells for either high power or high energy applications. The heat flux to and from the cell was investigated. Degradation and exothermic breakdown released large amounts of heat and gas. The total gas and heat emission from cycled cells was significantly larger than emission from cells aged by storage. After aging, the low energy cell ICR18650HE4 did not transgress into thermal runaway. Gas composition changed mainly in the early stage of the experiment. The composition of the initial gas release changed from predominantly CO2 towards hydrocarbons. The thermal runaway emitted for all tests a comparable mixture of H2, CO and CO2.

Thermal analysis of micromirrors for high-energy applications

2003 ◽  
Vol 26 (3) ◽  
pp. 310-317 ◽  
Author(s):  
Jianglong Zhang ◽  
Yung-Cheng Lee ◽  
A. Tuantranont ◽  
V.M. Bright
Keyword(s):  
Thermal Analysis ◽  
High Energy ◽  
Energy Applications

Analysis of low noise, bipolar transistor head amplifiers for high energy applications of silicon detectors

1982 ◽  
Vol 193 (3) ◽  
pp. 533-538 ◽  
Author(s):  
P. D'Angelo ◽  
A. Hrisoho ◽  
P. Jarron ◽  
P.F. Manfredi ◽  
J. Poinsignon
Keyword(s):  
High Energy ◽  
Low Noise ◽  
Bipolar Transistor ◽  
Silicon Detectors ◽  
Energy Applications

scholarly journals Niobium-Based Kinetic Inductance Detectors for High-Energy Applications

2020 ◽  
Vol E103.C (5) ◽  
pp. 204-211
Author(s):  
Masato NARUSE ◽  
Masahiro KUWATA ◽  
Tomohiko ANDO ◽  
Yuki WAGA ◽  
Tohru TAINO ◽  
...  
Keyword(s):  
High Energy ◽  
Kinetic Inductance Detectors ◽  
Kinetic Inductance ◽  
Energy Applications
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