Two ultrasonic nondestructive evaluation methods have been applied to systematically characterize the mechanical properties of nanostructured physical vapor deposited diamond-like carbon (DLC) ultra-hard coatings. A photoacoustic guided-wave technique is used to generate broadband surface acoustic waves (SAW) on the coating surfaces, and dispersion relations of the SAW for DLC coatings are meas...

This paper introduces passive wireless telemetry based operation for high frequency acoustic sensors. The focus is on the development, fabrication, and evaluation of wireless, battery-less SAW-IDT MEMS microphones for biomedical applications. Due to the absence of batteries, the developed sensors are small and as a result of the batch manufacturing strategy are inexpensive which enables their u...

The emerging field of quantum acoustics explores interactions between acoustic waves and artificial atoms and their applications in quantum information processing. In this experimental study, we demonstrate the coupling between a surface acoustic wave (SAW) and an electron spin in diamond by taking advantage of the strong strain coupling of the excited states of a nitrogen vacancy center while ...

To optimize the technological process of manufacturing copper wire coated with solder POIN-52 grade, optimal modes for tinning temperature, linear velocity, diameter diamond die and flux were identified. It was found that best is achieved when cleaning surface a by method electrochemical degreasing. The results tests showed that, in terms mechanical electrical parameters meets require-ments ele...

The orthopedic stent wire is one of the critical medical components, which mainly used for replacement physically damaged parts in human body. Therefore, a smooth surface and lack toxic substances on this component are highly demanded. In study, magnetic abrasive finishing (MAF) process was carried out using non-toxic compound (a mixture iron powder, diamond particles, cold cream, eco-friendly ...

BACKGROUND Micro computed tomography (micro CT) has been shown to provide exceptionally high quality imaging of the fine structural detail within urinary calculi. We tested the idea that micro CT might also be used to identify the mineral composition of urinary stones non-destructively. METHODS Micro CT x-ray attenuation values were measured for mineral that was positively identified by infra...

The multilayer structure of surface acoustic wave sensor is an important development direction devices in recent years. In this paper, the IDT/AlN/Mo/diamond pressure sensing element modeled and simulated. influence thickness AlN IDT on coefficient frequency K 2 were simulated analyzed. performance compared when metal layer Mo, no Pt. Finally, relationship between variation designed obtained. T...

• N doped DLC film has a porous structure and polar groups. Polar groups in the can selectively adsorb NH 3 gas molecules. The adsorbed increases film’s elastic modulus sensing performance. SAW sensor detect 100 ppb with response of 700 Hz. We proposed surface acoustic wave (SAW) based on nitrogen diamond like carbon (N-DLC) film. N-DLC film, prepared using microwave electron cyclotron resonanc...