The field of plasmonics explores the interaction between light and metallic micro/nanostructures and *** collective oscillation of free electrons on metallic surfaces enables subwavelength optical confinement and enha...
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The field of plasmonics explores the interaction between light and metallic micro/nanostructures and *** collective oscillation of free electrons on metallic surfaces enables subwavelength optical confinement and enhanced light-matter *** optoelectronics,perovskite materials are particularly attractive due to their excellent absorption,emission,and carrier transport properties,which lead to the improved performance of solar cells,lightemitting diodes(LEDs),lasers,photodetectors,and *** perovskite materials are coupled with plasmonic structures,the device performance significantly improves owing to strong near-field and far-field optical enhancements,as well as the plasmoelectric ***,we review recent theoretical and experimental works on plasmonic perovskite solar cells,light emitters,and *** underlying physical mechanisms,design routes,device performances,and optimization strategies are *** review also lays out challenges and future directions for the plasmonic perovskite research field toward next-generation optoelectronic technologies.
The present study explored relationships between social network position, SRL, and academic achievement among biomedical engineering (BmE) students. A cohort of undergraduate students (n = 107) entering their first ye...
The present study explored relationships between social network position, SRL, and academic achievement among biomedical engineering (BmE) students. A cohort of undergraduate students (n = 107) entering their first year in the BmE major participated in an online survey that asked about their demographic information, mentorship-based social capital, SRL strategies and motivational beliefs, and academic achievement. Participants were asked to nominate their friends and academic collaborators within the cohort. To determine how students’ positions within the peer social networks correlated with SRL and achievement, quadratic assignment procedures (QAPs) were conducted at the bivariate and multivariate levels. Centrality within academic collaboration and friendship networks was related to greater use of peer-learning strategies, higher regulation of cognition, and higher GPAs. Centrality within the friendship network was also associated with higher BmE self-efficacy. In line with social-cognitive views of SRL, this exploratory study showed that students’ positions in their peer networks (social/contextual factors) were related to SRL and GPA (personal and behavioral factors). Specifically, on average, students positioned more centrally within their networks had higher GPAs and SRL strategy use.
The diagnosis of faults in grid-connected photovoltaic (GCPV) systems is a challenging task due to their complex nature and the high similarity between faults. To address this issue, we propose a wrapper approach call...
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The fabrication of light-weight,highly impact-resistant,and energy-absorbent materials is urgently demanded in many facets of the society from body armor to aerospace engineering,especially under an extreme *** nanotu...
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The fabrication of light-weight,highly impact-resistant,and energy-absorbent materials is urgently demanded in many facets of the society from body armor to aerospace engineering,especially under an extreme *** nanotubes(CNTs),one of the strongest and toughest materials ever found,also have good conductivity,chemical stability,and thermal stability,etc,making them a competitive candidate as building blocks to help achieve the above *** this work,a kind of CNT network was prepared by using chlorosulfonic acid(CSA)to release the internal stress of super-aligned carbon nanotube films(SA-CNTF)and dendritic polyamide amine(PAmAm)to further introduce multiple hydrogen bonds and interlocking *** fabricated bioinspired carbon nanotube network films(PAmAm@C-CNTF)have a high toughness of 45.97 mJ/m3,showing an increase of 420%compared to neat *** importantly,the anti-impact performance of the films(e.g.,with a maximum specific energy absorption of 1.40 mJ/kg under 80-100 m/s projectile impact)is superior to that of conventional protective materials from steel and Kevlar fiber,and also exceeds that of any other reported carbon-based *** hierarchical energy dissipation mechanism was further revealed through experiment and *** functions including intelligent heating/anti-icing,ultraviolet protection,as well as electromagnetic interference shielding properties make these network films have great potential in practical multi-protection applications,especially under an extreme environment.
We use molecular dynamics to calculate rate coefficients for recombination of vacancies with self-interstitial atoms (SIAs) in Cu at temperatures from 300 to 700 K. From these results, we calculate vacancy/SIA recombi...
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We use molecular dynamics to calculate rate coefficients for recombination of vacancies with self-interstitial atoms (SIAs) in Cu at temperatures from 300 to 700 K. From these results, we calculate vacancy/SIA recombination volumes and find that they decrease from around 290Ω (where Ω is one atomic volume) at 300 K to 160Ω at 500 K and above. By counting the number of distinct pathways by which a stable SIA may migrate to a site of spontaneous recombination with a nearby vacancy, we find a lower bound estimate of 168Ω for the recombination volume. We furthermore rationalize its temperature dependence based on differences between the activation energies for recombination and SIA migration. Our work sheds light on the fundamental nature of the recombination volume and provides information that may be incorporated into multiscale models of radiation response in solids.
Fibrosis is a physiological condition marked by the excessive deposition of extracellular matrix (ECm) components, resulting in tissue stiffening and impaired organ function. Accurately quantifying and mapping the mec...
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Effect of the second phase in the micro-galvanic corrosion of a commercial mg alloy containing rare earth elements, cast WE43 alloy,was investigated in 0.6 m NaCl solution and 0.6 m Na_(2)SO_(4)solution by scanning el...
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Effect of the second phase in the micro-galvanic corrosion of a commercial mg alloy containing rare earth elements, cast WE43 alloy,was investigated in 0.6 m NaCl solution and 0.6 m Na_(2)SO_(4)solution by scanning electron microscopy(SEm) observations, scanning Kelvin probe force microscopy(SKPFm) analysis, hydrogen evolution, weight loss measurement, and electrochemical techniques. It is confirmed that the second phase of cast WE43 alloy is more active than mg matrix and exhibits an anodic role in the micro-galvanic corrosion with α-mg matrix as cathode and dissolves preferentially in Na_(2)SO_(4)solution, in contrast to the situation in NaCl solution. The corrosion rate of cast WE43 alloy in Na_(2)SO_(4)solution is much higher than that in NaCl solution, which is different from the conventional wisdom and could be attributed to the different role of the second phase in the micro-galvanic corrosion in two solutions.
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