Results 31 to 40 of about 6,686 (260)
MicromachinesThe study of high-pressure sound velocity is an important part of shock wave physics, and the study of ultra-high pressure sound velocity of iron is of great significance to many research fields such as geophysics, solid state physics, and ...
Long Chen +13 more
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Review on Recent Advances in Pulse Detonation Engines
Journal of Combustion, 2016 Pulse detonation engines (PDEs) are new exciting propulsion technologies for future propulsion applications. The operating cycles of PDE consist of fuel-air mixture, combustion, blowdown, and purging.
K. M. Pandey, Pinku Debnath
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Advanced Functional Materials, EarlyView.A fully polymeric two‐dimensional array of Dielectric Elastomers enables self‐sensing, cooperative actuation, and large‐stroke operation in a DE‐based autonomous conveyor. Based only on voltage and current measurements at actuator level, the system detects the presence of a ball and subsequently drives it toward a target position.
Saverio Addario +6 more
wiley +1 more source
Direct visualization of laser-driven dynamic fragmentation in tin by in situ x-ray diffraction
Matter and Radiation at ExtremesWe present a novel method for investigating laser-driven dynamic fragmentation in tin using in situ X-ray diffraction. Our experimental results demonstrate the feasibility of the method for simultaneously identifying the phase and temperature of ...
Jing Yang +11 more
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SensorsThis paper proposes a technique for precise distance measurement under laser random noise using autocorrelation demodulation. We conducted measurements within a 2 m range using a commercial digitizer with a sampling rate of 40 GS/s.
Yongchao Chen +15 more
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Advanced Functional Materials, EarlyView.A new phase‐change material encapsulated membrane offers more thermal resilience stability and safety than the conventional separators for batteries. ABSTRACT Thermal runaway in lithium‐ion batteries arises from the intrinsic coupling between heat generation and ion transport, yet conventional shutdown separators primarily rely on passive pore collapse
Sumedha Rajpoot +17 more
wiley +1 more source
Advanced Healthcare Materials, EarlyView.This study presents an implantable, wireless, battery‐free oximeter that can continuously monitor physiologically consistent regional tissue oxygenation under dynamic changes of blood volume. This is achieved through multiwavelength photoplethysmography and validated both via Monte Carlo simulations and in vivo rat studies. Different stress events were
Anat Usatinsky +12 more
wiley +1 more source
Generation of spherically converging shock wave based on shock wave lens [PDF]
Matter and Radiation at ExtremesThe manipulation of intense shock waves to either attenuate or enhance damage has long been a key goal in the domain of impact dynamics. Effective methods for such manipulation, however, remain elusive owing to the wide spectrum and irreversible ...
Qi-Guang He +5 more
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On the Detonation of a Combustible Gas [PDF]
Transactions of the American Mathematical Society, 1983 This paper is concerned with the existence of detonation waves for a combustible gas. The equations are those of a viscous, heat conducting, polytropic gas coupled with an additional equation which governs the evolution of the mass fraction of the unburned gas (see (1)). The reaction is assumed to be of the simplest form:
openaire +2 more sources
Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions
Advanced Materials, EarlyView.Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng +4 more
wiley +1 more source