III–V Nitride-Based X-ray Detectors

Qiu, C. H.; Pánkové, J. I.; Rossington, C.S.

doi:10.1016/s0080-8784(08)62624-1

Cited by 4 publications

(3 citation statements)

References 34 publications

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“…Recently, some attempts to employ the microfluidic devices capable of generating hydrodynamic cavitation have been made in liquid phase exfoliation [13], chemiluminescence [14] and bacteria disinfection [15]. These studies have revealed the extensive and almost intact potential of hydrodynamic cavitation in microfluidics.…”

Section: Introductionmentioning

confidence: 99%

The Hydrodynamic Cavitation Manifestation in Small Chips

Ghorbani

2021

Preprint

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Cavitation is a phase change phenomenon created by the static pressure reduction of a liquid medium at a constant temperature. This process has been considered as a disadvantageous mechanism in most turbomachinery systems, however, its potential in releasing energy at the bubble collapse stage has received lots of attention in recent decades. Particularly, the applicability of this phenomenon in micro scale gives rise to the research studies in different fields, i.e., wastewater treatment and medical imaging. In this study, microfluidic devices housing small microchannels have been fabricated to study the generation of the cavitating flow patterns bubbles. The main focuses in this work are on the surface and side wall roughness together with the size reduction effects on cavitation bubble generation. Accordingly, the microfluidic devices were fabricated using the techniques adopted from semi conductor based micro-fabrication. The experiments were performed at relatively higher upstream pressure, 4 to 7 MPa, to investigate the durability of the devices and flow patterns features. The results show that the side wall roughness elements are very effective in the small microchannels in terms of facile cavitating flow generation, while the size reduction in the diameter of the channel does not accompany intensified cavitating flow necessarily.

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Section: Introductionmentioning

confidence: 99%

The Hydrodynamic Cavitation Manifestation in Small Chips

Ghorbani

2021

Preprint

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show abstract

“…Therefore, the preliminary studies in this regard, were mostly attributed to the cavitation physics and scrutinizing the bubble creation and the flow pattern classifications in micro scale [11,12]. Recently, some attempts to employ the microfluidic devices capable of generating hydrodynamic cavitation have been made in liquid phase exfoliation [13], chemiluminescence [14] and bacteria disinfection [15]. These studies have revealed the extensive and almost intact potential of hydrodynamic cavitation in microfluidics.…”

Section: Introductionmentioning

confidence: 99%

The Hydrodynamic Cavitation Manifestation in Small Chips

Ghorbani

2021

IEEE Access

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Cavitation is a phase change phenomenon created by the static pressure reduction of a liquid medium at a constant temperature. This process has been considered as a disadvantageous mechanism in most turbomachinery systems, however, its potential in releasing energy at the bubble collapse stage has received lots of attention in recent decades. Particularly, the applicability of this phenomenon in micro scale gives rise to the research studies in different fields, i.e., wastewater treatment and medical imaging. In this study, microfluidic devices housing small microchannels have been fabricated to study the generation of the cavitating flow patterns bubbles. The main focuses in this work are on the surface and side wall roughness together with the size reduction effects on cavitation bubble generation. Accordingly, the microfluidic devices were fabricated using the techniques adopted from semiconductor based micro-fabrication. The experiments were performed at relatively higher upstream pressure, 4 to 7 MPa, to investigate the durability of the devices and flow patterns features. The results show that the side wall roughness elements are very effective in the small microchannels in terms of facile cavitating flow generation, while the size reduction in the diameter of the channel does not accompany intensified cavitating flow necessarily.

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“…In order to improve the antifriction performance of LB films, in our former work, the tribological behaviors of LB films of the metal compound modified by DDP have been studied [11][12][13][14]. While metal nanoparticles are a kind of lubrication additives with fine performance, which has been reported on many papers [15][16][17][18][19], spherical metal nanoparticles can act as ''ball-bearings'' between the frictional counterparts, so they can efficiently improve tribological properties of lubricant. In this paper, the DDP modified Cu nanoparticles LB films were prepared and their characteristics of structure, friction and adhesion were investigated.…”

Section: Introductionmentioning

confidence: 99%

Structure and frictional properties of Langmuir-Blodgett films of Cu nanoparticles modified by dialkyldithiophosphate

Dai

Cheng

et al. 2006

Applied Surface Science

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Langmuir-Blodgett (LB) films of dialkyldithiophosphate (DDP) modified Cu nanoparticles were prepared. The structure, microfrictional behaviors and adhesion of the LB films were investigated by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and atomic/friction force microscopy (AFM/FFM). Our results showed that the modified Cu nanoparticles have a typical core-shell structure and fine film-forming ability. The images of AFM/FFM showed that LB films of modified Cu nanoparticles were composed of many nanoparticles arranged closely and orderly and the nanoparticles had favorable behaviors of lower friction. The friction loop of the films indicated that the friction force was affected prominently by the surface slope of the Cu nanoparticles and the microfrictional behaviors showed obvious ''ratchet effect''. The adhesion experiment showed that the modified Cu nanoparticle had a very small adhesive force.

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III–V Nitride-Based X-ray Detectors

Cited by 4 publications

References 34 publications

The Hydrodynamic Cavitation Manifestation in Small Chips

The Hydrodynamic Cavitation Manifestation in Small Chips

The Hydrodynamic Cavitation Manifestation in Small Chips

Structure and frictional properties of Langmuir-Blodgett films of Cu nanoparticles modified by dialkyldithiophosphate

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