Results 41 to 50 of about 30,144 (262)
Measurements of dispersion of ultrasonic wave velocity in thin layers by the ultrasonic spectroscopy
Archives of Acoustics, 2014 This paper presents the results of measurements of the phase velocity dispersion of ultrasonic waves in thin aluminium sheets. The interaction between ultrasonic waves and a thin solid layer is analysed and the theoretical relations for the transmission ...
W. WOJDOWSKI
doaj
Advanced Functional Materials, EarlyView.In this work, diamonds with negative charged silicon‐vacancy (SiV−) centers have been designed for use as thermometers in biomedical applications. Multiparametric analysis of the emission characteristics of the SiV− centers provides extraordinary sensitivity for temperature detection in the physiological temperature range.
María Gragera +6 more
wiley +1 more source
The Effect of PVC Powder content on the Elastic Moduli and Acoustic Impedance of Epoxy Composites
Iraqi Journal of Physics, 2009 The primary purpose of the present research was to study the effect of polyvinyl chloride (PVC) powder content on ultrasonic wave velocity in PVC/Epoxy composites.
Kawakib Jassim Majeed
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Chemical Engineering Transactions, 2017 The ultimate recovery factor of primary and secondary recovery process can be up to approximately 40 % of oil in place. Technology development is required in order to improve and maximise the recovery and recover some of the oil left.
N.A. Noruddin +2 more
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Tunable Complementary Doping Strategy Enables High‐Performance Homo‐Channel CMOS in Monolayer WSe2
Advanced Functional Materials, EarlyView.Polarity‐selective modulation enables a homo‐channel WSe2 CMOS platform from a single 2D semiconductor. MoOx and AlN tune WSe2 toward p‐ and n‐type operation, respectively, yielding complementary FETs and inverters with balanced switching, high voltage gain, low static power, and promising scalability for 2D logic integration.
Kuan‐Hsiang Chiu +7 more
wiley +1 more source
Damage identification and location method for welded pipe using ultrasonic guided wave
You-qi chuyun[Objective] The damage detection technology based on ultrasonic guided waves has broad application prospects in the rapid damage detection of long-distance pipes.
ZHOU Kai +4 more
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Aerosol and Air Quality Research, 2020 This study models the agglomeration of submicron particles when they are exposed to different types of ultrasonic waves, viz., sinusoidal waves and shock waves (pulses).
Vladimir N. Khmelev +2 more
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Advanced Functional Materials, EarlyView.A tubular electrowetting pump moves alternating droplets through a millimeter‐wide channel in discrete, reversible steps, functioning as a fluidic stepper motor. With no moving parts and electrodes insulated from the liquid, it delivers silent, accurate flow. Flexibility allows the pump to be woven directly into textiles for wearable, medical, and soft‐
Robert Hennig, Herbert Shea
wiley +1 more source
Ultrasonic waves in some biological suspensions and emulsions
Archives of Acoustics, 2014 The frequency dependence is established for the propagation velocity and attenuation coefficient of ultrasonic waves in dilute suspensions and emulsions and digital computations are performed for the aqueous emulsion of sunflower oil.
J. LEWANDOWSKI
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Shock and Vibration, 2014 In this paper, we propose a J-groove dissimilar weld crack visualization system based on ultrasonic propagation imaging (UPI) technology. A full-scale control rod drive mechanism (CRDM) assembly specimen was fabricated to verify the proposed system.
Yun-Shil Choi +2 more
doaj +1 more source