Preparation and Ignition Properties of Tantalum Nitride Thin-Film Energy Transducers

Abstract Tantalum nitride (TaN) has excellent electrical properties that can be used as an energy transducer in the ignition field. In this study, TaN film transducers with different bridge parameters were designed and fabricated in an attempt to reduce its energy consumption. The ignition sensitivity of the film transducers was tested using the Langley method. The results revealed that the ignition voltage is the lowest when the thickness of the film is 0.9 µm. If the thickness and length of the bridge film are fixed, the ignition voltage of the transducer first decreases and then increases with the width of the bridge film increases. When the thickness and width of the bridge film are fixed, the ignition voltage of the transducer is first decrease and then increase with the length of the bridge film increases. We also evaluated the ignition mechanism of TaN film transducers. By comparing the performance of TaN, semiconductor bridge (SCB), and nickel–chromium (Ni–Cr) film transducers, the TaN and SCB transducers are proven to have similar ignition performances, which are better than the Ni–Cr transducer. The negative temperature coefficient of TaN and the positive feedback after the initial electrothermal ignition promoted the growth and strengthening of plasma in the bridge film, allowing the medicament to ignite quickly. When the feasibility of the process and the influence of the bridge film parameters on ignition sensitivity are considered, the preferred design parameters of the transducer are a thickness of 0.9 µm and a bridge film size of 0.3 mm×0.3 mm. This study shows that TaN can be utilized as a high-performance transducer.

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Advances in imaging SIMS studies of stained and BrdU-labelled human metaphase chromosomes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100141032 ◽

1995 ◽

Vol 53 ◽

pp. 932-933

Author(s):

R. Levi-Setti ◽

J. M. Chabala ◽

R. Espinosa ◽

M. M. Le Beau

Keyword(s):

High Performance ◽

Secondary Ion Mass Spectrometry ◽

Analytical Sensitivity ◽

Metaphase Chromosomes ◽

Banding Patterns ◽

Sector Mass Spectrometer ◽

Staining Methods ◽

The University ◽

Secondary Ion ◽

Better Than

We have shown previously that isotope-labelled nucleotides in human metaphase chromosomes can be detected and mapped by imaging secondary ion mass spectrometry (SIMS), using the University of Chicago high resolution scanning ion microprobe (UC SIM). These early studies, conducted with BrdU- and 14C-thymidine-labelled chromosomes via detection of the Br and 28CN- (14C14N-> labelcarrying signals, provided some evidence for the condensation of the label into banding patterns along the chromatids (SIMS bands) reminiscent of the well known Q- and G-bands obtained by conventional staining methods for optical microscopy. The potential of this technique has been greatly enhanced by the recent upgrade of the UC SIM, now coupled to a high performance magnetic sector mass spectrometer in lieu of the previous RF quadrupole mass filter. The high transmission of the new spectrometer improves the SIMS analytical sensitivity of the microprobe better than a hundredfold, overcoming most of the previous imaging limitations resulting from low count statistics.

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Effect of Design Parameters on the Blast Response of Ultra-High Performance Concrete Columns

10.21838/uhpc.2016.43 ◽

2016 ◽

Cited By ~ 2

Author(s):

Sarah De Carufel ◽

Frederic Dagenais ◽

Christian Melançon ◽

Hassan Aoude

Keyword(s):

High Performance ◽

High Performance Concrete ◽

Concrete Columns ◽

Design Parameters ◽

Ultra High Performance Concrete ◽

Blast Response

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Performance of Seven Consumer Sleep-Tracking Devices Compared with Polysomnography

SLEEP ◽

10.1093/sleep/zsaa291 ◽

2020 ◽

Author(s):

Evan D Chinoy ◽

Joseph A Cuellar ◽

Kirbie E Huwa ◽

Jason T Jameson ◽

Catherine H Watson ◽

...

Keyword(s):

Performance Measures ◽

Gold Standard ◽

High Performance ◽

Sleep Stage ◽

Sleep Laboratory ◽

Sleep Assessment ◽

Sleep Condition ◽

Different Populations ◽

Tracking Devices ◽

Better Than

Abstract Study Objectives Consumer sleep-tracking devices are widely used and becoming more technologically advanced, creating strong interest from researchers and clinicians for their possible use as alternatives to standard actigraphy. We therefore tested the performance of many of the latest consumer sleep-tracking devices, alongside actigraphy, versus the gold-standard sleep assessment technique, polysomnography (PSG). Methods In total, 34 healthy young adults (22 women; 28.1 ± 3.9 years, mean ± SD) were tested on three consecutive nights (including a disrupted sleep condition) in a sleep laboratory with PSG, along with actigraphy (Philips Respironics Actiwatch 2) and a subset of consumer sleep-tracking devices. Altogether, four wearable (Fatigue Science Readiband, Fitbit Alta HR, Garmin Fenix 5S, Garmin Vivosmart 3) and three non-wearable (EarlySense Live, ResMed S+, SleepScore Max) devices were tested. Sleep/wake summary and epoch-by-epoch agreement measures were compared with PSG. Results Most devices (Fatigue Science Readiband, Fitbit Alta HR, EarlySense Live, ResMed S+, SleepScore Max) performed as well as or better than actigraphy on sleep/wake performance measures, while the Garmin devices performed worse. Overall, epoch-by-epoch sensitivity was high (all ≥0.93), specificity was low-to-medium (0.18-0.54), sleep stage comparisons were mixed, and devices tended to perform worse on nights with poorer/disrupted sleep. Conclusions Consumer sleep-tracking devices exhibited high performance in detecting sleep, and most performed equivalent to (or better than) actigraphy in detecting wake. Device sleep stage assessments were inconsistent. Findings indicate that many newer sleep-tracking devices demonstrate promising performance for tracking sleep and wake. Devices should be tested in different populations and settings to further examine their wider validity and utility.

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Evaluation of Static Mapping for Dynamic Space-Shared Multi-task Processing on FPGAs

Journal of Signal Processing Systems ◽

10.1007/s11265-020-01633-z ◽

2021 ◽

Author(s):

Umar Ibrahim Minhas ◽

Roger Woods ◽

Georgios Karakonstantis

Keyword(s):

High Performance ◽

Design Space Exploration ◽

Design Space ◽

System Throughput ◽

Design Parameters ◽

Temporal Constraints ◽

Shared Resources ◽

Task Processing ◽

High Level ◽

Performance Computing

AbstractWhilst FPGAs have been used in cloud ecosystems, it is still extremely challenging to achieve high compute density when mapping heterogeneous multi-tasks on shared resources at runtime. This work addresses this by treating the FPGA resource as a service and employing multi-task processing at the high level, design space exploration and static off-line partitioning in order to allow more efficient mapping of heterogeneous tasks onto the FPGA. In addition, a new, comprehensive runtime functional simulator is used to evaluate the effect of various spatial and temporal constraints on both the existing and new approaches when varying system design parameters. A comprehensive suite of real high performance computing tasks was implemented on a Nallatech 385 FPGA card and show that our approach can provide on average 2.9 × and 2.3 × higher system throughput for compute and mixed intensity tasks, while 0.2 × lower for memory intensive tasks due to external memory access latency and bandwidth limitations. The work has been extended by introducing a novel scheduling scheme to enhance temporal utilization of resources when using the proposed approach. Additional results for large queues of mixed intensity tasks (compute and memory) show that the proposed partitioning and scheduling approach can provide higher than 3 × system speedup over previous schemes.

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A high-fidelity realization of the Euclid code comparison N-body simulation with Abacus

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stz634 ◽

2019 ◽

Vol 485 (3) ◽

pp. 3370-3377 ◽

Cited By ~ 8

Author(s):

Lehman H Garrison ◽

Daniel J Eisenstein ◽

Philip A Pinto

Keyword(s):

Power Spectrum ◽

High Performance ◽

High Fidelity ◽

Step Size ◽

Time Step ◽

Code Comparison ◽

Force Accuracy ◽

Integration Errors ◽

Better Than ◽

Good Agreement

Abstract We present a high-fidelity realization of the cosmological N-body simulation from the Schneider et al. code comparison project. The simulation was performed with our AbacusN-body code, which offers high-force accuracy, high performance, and minimal particle integration errors. The simulation consists of 20483 particles in a $500\ h^{-1}\, \mathrm{Mpc}$ box for a particle mass of $1.2\times 10^9\ h^{-1}\, \mathrm{M}_\odot$ with $10\ h^{-1}\, \mathrm{kpc}$ spline softening. Abacus executed 1052 global time-steps to z = 0 in 107 h on one dual-Xeon, dual-GPU node, for a mean rate of 23 million particles per second per step. We find Abacus is in good agreement with Ramses and Pkdgrav3 and less so with Gadget3. We validate our choice of time-step by halving the step size and find sub-percent differences in the power spectrum and 2PCF at nearly all measured scales, with ${\lt }0.3{{\ \rm per\ cent}}$ errors at $k\lt 10\ \mathrm{Mpc}^{-1}\, h$. On large scales, Abacus reproduces linear theory better than 0.01 per cent. Simulation snapshots are available at http://nbody.rc.fas.harvard.edu/public/S2016.

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Copper Ulsi Interconnect Technology

MRS Proceedings ◽

10.1557/proc-514-39 ◽

1998 ◽

Vol 514 ◽

Author(s):

D. Edelstein

Keyword(s):

High Performance ◽

Stress Testing ◽

Cmos Technology ◽

Functional Verification ◽

Functional Modules ◽

Mos Devices ◽

Potential Problems ◽

Cu Contamination ◽

Interconnect Technology ◽

Better Than

ABSTRACTRecently IBM announced the first implementation of full copper ULSI wiring in a CMOS technology, to be manufactured on its high-performance 0.22 um CMOS products this year. Features of this technology will be presented, as well as functional verification on CMOS chips. To reach this level, extensive yield, reliability, and stress testing had to be done on test and product-like chips, including those packaged into product modules. Data will be presented fom all aspects of this testing, ranging from experiments designed to promote Cu contamination of the MOS devices, to temperature/humidity/bias stressing of assembled functional modules. The results in all areas are shown to be equal to or better than standards set by our current AI(Cu)/Wstud technology. This demonstrates that the potential problems associated with copper wiring that have long been discussed can be overcome.

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PHEMTO: the polarimetric high energy modular telescope observatory

Experimental Astronomy ◽

10.1007/s10686-021-09723-x ◽

2021 ◽

Author(s):

P. Laurent ◽

F. Acero ◽

V. Beckmann ◽

S. Brandt ◽

F. Cangemi ◽

...

Keyword(s):

Black Holes ◽

Energy Range ◽

High Performance ◽

Angular Resolution ◽

High Energy ◽

Thermal Processes ◽

Scientific Performance ◽

X Ray ◽

Measurement Capability ◽

Better Than

AbstractBased upon dual focusing techniques, the Polarimetric High-Energy Modular Telescope Observatory (PHEMTO) is designed to have performance several orders of magnitude better than the present hard X-ray instruments, in the 1–600 keV energy range. This, together with its angular resolution of around one arcsecond, and its sensitive polarimetry measurement capability, will give PHEMTO the improvements in scientific performance needed for a mission in the 2050 era in order to study AGN, galactic black holes, neutrons stars, and supernovae. In addition, its high performance will enable the study of the non-thermal processes in galaxy clusters with an unprecedented accuracy.

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Process optimization of chili flavor beef tallow and analysis of its volatile compounds by GC-IMS

International Journal of Food Engineering ◽

10.1515/ijfe-2020-0246 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Hang Li ◽

Jiamin Liu ◽

Zhanzhong Wang ◽

Xiaodong Liu ◽

Xichun Yan ◽

...

Keyword(s):

Volatile Compounds ◽

Ion Mobility ◽

Beef Tallow ◽

High Performance ◽

Raw Materials ◽

Chromatic Aberration ◽

Frying Temperature ◽

Frying Time ◽

Solid Liquid ◽

Better Than

Abstract With chili and liquid beef tallow as the main raw materials, the processing conditions of chili flavor beef tallow were explored. Gas chromatograpy-ion mobility spectrometry (GC-IMS) was used to determine the volatile compounds in chili flavor beef tallow. The capsaicin and dihydrocapsaicin in chili flavor beef tallow were determined by high performance liquid chromatography (HPLC). The optimum technological conditions were determined, and the index of chromatic aberration, cholesterol was also determined. Based on GC-IMS analysis, 102 kinds of volatile compounds were detected, and the sample III (the ratio of solid–liquid was 1:5, the frying temperature was 120 °C, and the frying time was 15 min) performed better than other samples. The preparation of chili beef tallow improves its antioxidant activity and makes its aroma more intense and more in line with the taste of Chinese people, which provides a theoretical and practical basis for the development of spice beef tallow in the future.

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Trade-Off Analysis for the Design of a High Performance Hydrostatic Actuation System

10.1115/imece2000-1981 ◽

2000 ◽

Author(s):

S. R. Habibi

Keyword(s):

Mathematical Modeling ◽

Quadratic Programming ◽

High Performance ◽

Design Parameters ◽

Mathematical Functions ◽

Trade Off ◽

Actuation System ◽

Trade Offs ◽

Expected Performance ◽

Dominant Design

Abstract This paper considers the design of a high performance hydrostatic actuation system referred to as the ElectroHydraulic Actuator (EHA). The expected performance of EHA and its dominant design parameters are identified by using mathematical modeling. The design parameters are classified into Direct and Indirect categories based on the measure of their accessibility to the designer. The Direct parameters are directly quantifiable and, can be linked to the performance of EHA through a set of mathematical functions. A prototype of EHA has been produced and described. The mathematical functions linking performance to design parameters are used to investigate design trade-offs. Design improvements to the prototype are suggested by using constrained quadratic programming.

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