Results 261 to 270 of about 475,553 (315)
Tracing Sub‐Monolayer Contamination on Wafer‐Scale 2D Materials
Advanced Functional Materials, EarlyView.Sub‐monolayer adventitious carbon contamination limits the performance and reproducibility of 2D material‐based devices. This study demonstrates scanning helium microscopy (SHeM) as a non‐destructive, ultra‐sensitive tool for wafer‐scale imaging of surface cleanliness.
Chenyang Zhao +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Selenium‐incorporated polymerized nonfullerene acceptor PCB2Se forms a strong supramolecular complex with SWCNTs, enabling a record‐high zT of 0.29. Sequential N‐DMBI doping, mediated through a polymer‐assisted electron‐transfer pathway, successfully converts the PCB2Se/SWCNT composite into an efficient n‐type material with an impressive power factor ...
Chi‐Chun Tseng +8 more
wiley +1 more source
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Characteristics of the distribution of vibrators in pack vibration
Hydrotechnical Construction, 19741. For the disposition of vibrators in packs and the design of the schemes for disposition of the packs in the concreted blocks, account must be taken of the simultaneous action of the vibrators on the concrete mix, which makes it possible to increase by 20–25% the output of the compaction process because of a reduction in the vibration time or a ...
G. D. Petrov, V. B. Safonov
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Vibration characteristics of implants
The Journal of the Acoustical Society of America, 2003Vibro-acoustography is a technique that uses the radiation force of amplitude-modulated ultrasound to evaluate the dynamic response of an object at the modulation frequency. One potential application of this technique is to assess the reaction of the host tissue to the implant material by evaluating the mechanical properties of the tissue surrounding ...
Ahmed M. Al-Jumaily +2 more
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Vibrational characteristics of the glassharp
The Journal of the Acoustical Society of America, 2006Using the finite-element method (FEM), glassharp vibration was analyzed. Results show that the glassharp pitch is controllable at the stage of manufacturing. First, the effects of several factors were studied, such as geometry approximation, element type, and the number of division on the accuracy of mode frequencies.
Koichi Uchida, Kenshi Kishi
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Vibration characteristics of grafts for the tympanic membrane
Advances in Therapy, 2007Perforation of the tympanic membrane occurs frequently as a result of infection, external trauma, and high-level impulsive sound pressure, such as that associated with an explosion. Many different surgical techniques can be used to repair the tympanic membrane and ossicles.
Oktem, Fatih +5 more
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Vibration Characteristics of Fibrous Composites with Damage
Journal of Vibration and Control, 2003A micromechanical model is developed in order to study the vibration characteristics of fibrous composites with damage. Damage is taken in the form of either a broken fiber or a matrix crack normal to the fiber direction. The unidirectionally reinforced periodic composite, when vibrating in the longitudinal (fiber) direction, is modeled as a ...
Nayfeh, Adnan H., Abdelrahman, Wael G.
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Vibrational Characteristics of Man
SAE Technical Paper Series, 1971<div class="htmlview paragraph">The frequency response and unit impulse response of man was determined by transient testing and subsequent data processing. In all cases, the response is that of the head for input at the feet or chair base. Vertically, man responds much like a uniform rod. Laterally, the response is similar to that of a nonuniform
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Contact Vibration Characteristic of Electromagnetic Relay
IEICE Transactions on Electronics, 2006Vibration characteristic of electromagnetic relay (EMR), including modal and frequency response are important for increasing operational reliability in mechanical environment. The switching contact system, as function execution component of EMR, is the important parts in this product. This paper presents a dynamic model of contact system by introducing
Wanbin Ren, Guofu Zhai, Li Cui
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