Results 71 to 80 of about 3,526 (288)
The effects of internal resonances in vibration isolators under absolute velocity feedback control
, 2007 Conventional vibration isolators are usually assumed to be massless for modelling purposes, which tends to overestimate the isolator performance because the internal resonances (IRs) due to the inertia of the isolator are neglected.
Brennan, Mike +3 more
core
Beam vibration studies using measured bending wave impedance [PDF]
The Journal of the Acoustical Society of America, 1994 Acoustic impedance in a plane-wave field is obtained experimentally using the well-known two-sensor technique. Recently, in the literature, the application of this technique to determine bending wave impedance has been demonstrated. In transverse vibration, the impedance is defined in terms of force and moment and the corresponding linear and angular ...
S. K. Kim, M. G. Prasad
openaire +1 more source
Advanced Functional Materials, EarlyView.HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan +9 more
wiley +1 more source
Atomic Size Misfit for Electrocatalytic Small Molecule Activation
Advanced Functional Materials, EarlyView.This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong +3 more
wiley +1 more source
Optimisation of the longitudinal-torsional output of a half-wavelength Langevin transducer [PDF]
, 2012 Numerous ultrasonic applications, such as high-frequency/low frequency drilling, require or can benefit from the inclusion of some torsional vibration behaviour within a primarily longitudinal pattern. Producing longitudinal-torsional (LT) vibration in a
Al-Budairi, Hassan +2 more
core
DEVELOPMENT OF FUNDAMENTAL THEORY OF THIN IMPEDANCE VIBRATORS
Progress In Electromagnetics Research M, 2016 In the paper, we prove two theorems relating to the theory of thin impedance vibrator radiators excited by a lumped voltage generator under rather general conditions. The first theorem proves that influence of external electrodynamic media on the vibrator current distribution is limited and can be estimated using a small natural parameter.
Yuriy M. Penkin +2 more
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Advanced Functional Materials, EarlyView.This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies +8 more
wiley +1 more source
Study on vibrational electric generator with impedance control
Journal of the Japan Society for Precision Engineering, Contributed Papers, 2004 This paper presents theoretical analysis and design method of a linear vibrational electric generator that converts kinetic energy of vibration into electricity. The generator is intended for applications such as supplying electricity to sensors or small information devices that must function without batteries for a long period of time.
Ken SASAKI +3 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.A metal halide perovskite‐based photoanode integrated with a CoNiFe layered double hydroxide (LDH) cocatalyst is reported for selective glucose oxidation reaction (GOR), achieving simultaneous and unassisted photoelectrochemical hydrogen production. This system delivers high photocurrent density, excellent Faradaic efficiency of GOR, and strong techno ...
Shujie Zhou +12 more
wiley +1 more source
Ring-Type Rotary Ultrasonic Motor Using Lead-free Ceramics [PDF]
, 2015 Ultrasonic motors provide high torques and quick responses compared to their magnetic counterparts; therefore, they are widely used in small-scale applications such as mobile phones, microrobots, and auto-focusing modules in digital cameras. To determine
Gwon, Jung-Ho +9 more
core +1 more source