Architecture- and Gate-Oxide-Level Optimization of a Si-Based Asymmetric U-TFET for Low Power Operation: a Real-Time Gate/Drain Electrostatic Based Leakage Perspective

Silicon - In this paper, for the first time, an optimized asymmetric U-shaped TFET, suitable for low power application, has been proposed after a hardcore performance analysis, considering the...     

A survey on rumor detection and prevention in social media using deep learning

Knowledge and Information Systems - In the current digital era, massive amounts of unreliable, purposefully misleading material, such as texts and images, are being shared widely on various web...     

Little amounts of carbon nanotubes as anti-wear reinforcement for alumina in dry sliding

Carbon nanotubes (CNTs) are a leading choice for reinforcing oxide and nitride ceramics, but investigations into the tribological performance of CNT–ceramic composites remain inconclusive. Here, we show that reinforcement with only .1 wt% multi-walled CNTs improves the antifriction and anti-wear performance of zirconia-toughened alumina by up to 23% and 51%, respectively. Dry sliding tests under normal loads of 40–60 N for a sliding distance of 1000 m reveal a load-dependent transition in the lubrication mechanism—CNTs retain their tubular morphology at low loads and reduce friction via a sliding–rolling response, whereas high sliding loads trigger the formation of a uniform, thin lubricating film by the repeated crushing and smearing of exfoliated nanotubes. Raman spectra analyses confirmed that the carbon-rich tribo-film possesses a graphitic structure. Well-dispersed CNTs prevent wear loss by mechanisms, such as crack bridging and grain anchoring. The present work opens up new frontiers for the application of CNT–alumina tribo-ceramics in anti-wear, unlubricated, and high contact stress applications, such as in the manufacturing and mining industries.