Results 91 to 100 of about 4,272 (296)
All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security
Advanced Materials, EarlyView.An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak +4 more
wiley +1 more source
Advanced Materials, EarlyView.The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela +4 more
wiley +1 more source
Effects of Tip Clearance on Aerodynamic Damping in a Linear Turbine Cascade
Journal of Propulsion and Power, 2008 This paper documents an investigation into unsteady flow in a three-dimensional oscillating turbine cascade with emphasis on the influence of tip clearance. Systematic experimental measurements were acquired on a low-speed turbine cascade rig. The cascade consists of seven prismatic turbine blades, with the middle blade being driven to oscillate in a ...
Huang, X, He, L, Bell, D
openaire +1 more source
Advanced Materials, EarlyView.Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang +5 more
wiley +1 more source
Analysis of damping and cross dynamic derivative characteristics for a quasi-HyTRV lifting body
Kongqi donglixue xuebaoDynamic derivatives are fundamental parameters for aerodynamic modeling and crucial for assessing vehicle dynamic characteristics. For hypersonic lifting-body vehicles, aerodynamic coupling among pitch, yaw, and roll directions is significant due to ...
Hao Yan +4 more
doaj +1 more source
Study on damping characteristics of steam turbine hollow vane with damper
Nihon Kikai Gakkai ronbunshu, 2014 A vane used in a low pressure end of steam turbine is usually fixed to a shroud and a casing by welding both ends. In such a vane structure, the damping in loading operation is comprised of the material damping and the aerodynamic damping, because the ...
Yasutomo KANEKO +3 more
doaj +1 more source
THE AERODYNAMIC DAMPING WHEN VIBRATION OF CABLE SYSTEMS
Structural Mechanics of Engineering Constructions and Buildings, 2014 He work shows that wind flow exerts a dampening effect on the wavering guyed system and provides analytical and numerical solutions, demonstrating the degree of damping. It is shown that the damping of oscillations will be obtained in a natural way if wind pressure is taken to be proportional to the square of the relative velocity of the air and points
V B Zylev, A V Shtein, N A Grigoriev
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Novel Aerodynamic Damping Identification Method for Operating Wind Turbines [PDF]
, 2019 This contribution introduces a novel method to determine the aerodynamic damping for operating wind turbines. Previous research typically estimated the modal damping ratios in the fore-aft and side-side directions as two decoupled degrees of freedom ...
Fromme, P, Chen, C, Duffour, P
core
Experimental Study of Aerodynamic Damping in Arrays of Vibrating Cantilevers
, 2009 Cantilever structures vibrating in a fluid are encountered in numerous engineering applications. The aerodynamic loading from a fluid can have a large effect on both the resonance frequency and damping, and has been the subject of numerous studies.
Garimella, Suresh +5 more
core +1 more source
Advances in Magnesium‐Based Thermoelectrics: A Critical Review
Advanced Materials, EarlyView.Magnesium‐based thermoelectric materials have emerged as promising candidates for low‐to‐mid‐temperature energy conversion due to their abundance, low cost, and competitive performance. This review summarizes recent advances in Mg3X2, MgAgSb, and Mg2X systems, covering transport mechanisms, fabrication strategies, stability challenges, and device ...
Li‐Min Zhang +5 more
wiley +1 more source