Results 61 to 70 of about 3,524 (266)
Research on Design Features and Vibration Characteristics of Self-excited Hydraulic Oscillator
Shiyou jixie, 2020 The structural parameters of the self-excited hydraulic oscillator such as shoulder distance, split distance, loop width and side wall angle are the direct factors that affect its vibration characteristics.
王传鸿, 邹刚, 周歆, 杨小城
doaj
Shiyou jixie, 2022 Long-term vortex-induced vibration will cause fatigue damage to risers.In view of this,CFD numerical simulation method was used to simulate the vortex-induced vibration amplitude response,force characteristics and motion trajectory of two small-sized ...
Zhao Peng, Wang Xiaokai, Zhang Yao
doaj
Advanced Functional Materials, EarlyView.Multi‐metal Cu─Ce─Ag nanoparticles harness synergistic interactions to drive efficient electrochemical CO2 reduction reaction toward C2+ products at high current densities. Ag enhances CO production, Ce modulates Cu oxidation states, and together they boost *CO coverage and local pH to enhance C─C coupling, enabling record C2+ yields with suppressed ...
Nini Zhang +9 more
wiley +1 more source
Recent Progress in Distributed Fiber Optic Sensors
Sensors, 2012 Rayleigh, Brillouin and Raman scatterings in fibers result from the interaction of photons with local material characteristic features like density, temperature and strain.
Xiaoyi Bao, Liang Chen
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Displacement detection with a vibrating rf superconducting interference device: Beating the standard linear limit [PDF]
Physical Review E, 2007 We study a configuration for displacement detection consisting of a nanomechanical resonator coupled to both a radio frequency superconducting interference device and to a superconducting stripline resonator. We employ an adiabatic approximation and rotating wave approximation and calculate the displacement sensitivity. We study the performance of such
Eyal, Buks +4 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.A novel approach for the design of functional semiconductors is presented, which utilizes the excellent optoelectronic properties of layered hybrid perovskites and the possibility to introduce a molecular photoswitch as the organic spacer. This concept is successfully demonstrated on a coumarin‐based system with the possibility to change the bandgap ...
Oliver Treske +4 more
wiley +1 more source
Beatings in electronic 2D spectroscopy suggest another role of vibrations in photosynthetic light harvesting [PDF]
Proceedings of the National Academy of Sciences, 2013 Light harvesting by photosynthetic organisms is nature’s way to use solar energy for biomass growth. The process starts with light absorption in so-called antenna pigments, and is followed by transfer of the excited-state energy to reaction center proteins, where the energy is converted to an electrochemical gradient across the photosynthetic membrane (
Tõnu, Pullerits +2 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan +6 more
wiley +1 more source
Transparent Film-Type Vibrotactile Actuator Array and Its Haptic Rendering Using Beat Phenomenon
Sensors, 2019 The most important thing in a thin and soft haptic module with an electroactive polymer actuator array is to increase its vibrotactile amplitude and to create a variety of vibrotactile sensations.
Dong-Soo Choi, Sang-Youn Kim
doaj +1 more source
Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges
Advanced Functional Materials, EarlyView.Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky +3 more
wiley +1 more source