Results 91 to 100 of about 14,888,123 (242)

A novel highly porous dual-phase high-entropy ultrahigh-temperature ceramic with outstanding properties

Journal of Advanced Ceramics
Ultrahigh-temperature ceramics (UHTCs) have a unique combination of high melting points, high strengths, and high chemical stabilities, which makes them unique materials for a wide range of ultrahigh-temperature (> 2000 °C) applications.
Zhuojie Shao, Dawei Zeng, Mengjun Xu, Xirui Lv, Zhen Wu, Luchao Sun, Jingyang Wang   +6 more
doaj   +1 more source

Entropy splitting for high-order numerical simulation of compressible turbulence [PDF]

, 2002
A stable high-order numerical scheme for direct numerical simulation (DNS) of shock-free compressible turbulence is presented. The method is applicable to general geometries. It contains no upwinding, artificial dissipation, or filtering.
Li, Q., Yee, Helen C., Li, Qinling, Sandham, N.D., Sandham, N. D., Yee, H.C.   +5 more
core   +1 more source

MXenes Contacts for p‐type 2D Electronics

Advanced Science, EarlyView.
Solution‐processed MXene contacts are engineered for p‐type 2H‐MoTe2 transistors. By comparing Ti3C2Tx, Nb2CTx, and Mo2CTx, Nb2CTx is identified as the best‐performing contact among the MXenes examined in this work, offering favorable work‐function alignment, low contact resistance, and near‐ohmic hole injection for scalable 2D electronics.
Tianchao Guo, Maolin Chen, Yizhou Wang, Chen Liu, Xiangming Xu, Linqu Luo, Dekang Zhu, Ning Chu, Xiaowen Zhang, Alfonso Caraveo, Thomas D. Anthopoulos, Xixiang Zhang, Husam N. Alshareef   +12 more
wiley   +1 more source

Composition dependence of oxidation resistance in high entropy ultra-high temperature ceramics

Open Ceramics
High entropy ultra-high temperature ceramics (HE-UHTCs) have garnered intense research interest due to the potential for optimized oxidation and mechanical properties for extreme environment applications. HE-UHTCs are expected to oxidize according to the
Lavina Backman, Joshua Gild, Mingde Qin, Jian Luo, Elizabeth J. Opila   +4 more
doaj   +1 more source

Ferroelectric Catalysts in the Hydrogen Evolution Reaction: A Perspective

Advanced Science, EarlyView.
This perspective summarizes recent advances in ferroelectric (FE) catalysts for the hydrogen evolution reaction (HER). It first introduces HER fundamentals and FE mechanisms, then classifies FE catalysts into single‐phase, single‐atom‐modified, heterostructured, and other engineered types, with representative examples.
Rongxuan Lu, Weizhen Meng, Zhenxiang Cheng, Judy N. Hart, Michael Ferry, Sean Li, Wenxian Li   +6 more
wiley   +1 more source

Photoelectric Imaging of the Optically Inactive Charge State of Silicon‐Vacancy Defects in Diamond

Advanced Science, EarlyView.
Although the doubly negative charge state of the SiV center in diamond is predicted to ionize only in the ultraviolet and is therefore considered optically inaccessible, we demonstrate visible‐range photoelectric imaging enabled by a previously unrecognized regime of laser‐assisted tunneling. ABSTRACT The investigation of optically active point defects
Ilia Chuprina, Gergő Thiering, Emilie Bourgeois, Anna Ermakova, Dmitry Budker, Adam Gali, Milos Nesladek, Petr Siyushev, Fedor Jelezko   +8 more
wiley   +1 more source

Dual-phase medium-entropy diboride–carbide ceramics with metal element exchange during sintering

Journal of Advanced Ceramics
Multiphase composition design is a strategy for optimizing the microstructures and properties of ceramic materials through mutual inhibition of grain growth, complementary property improvement, or even mutually reinforcing effects.
Pai Peng, Ji-Xuan Liu, Xiao-Ting Xin, Weichao Bao, Yongcheng Liang, Fangfang Xu, Guo-Jun Zhang   +6 more
doaj   +1 more source

Ion‐Driven Regulation of Ca2+ Flow by Ti/Zn Composite Activates ERK/MAPK Signaling and Maintains Mitochondrial Homeostasis to Promote Macrophage‐Mediated Bone Regeneration

Advanced Science, EarlyView.
A 3D‐printed interpenetrating Ti/Zn composite enables sustained Zn2+ release to regulate intracellular Ca2+ redistribution, preserve mitochondrial homeostasis, activate ERK/MAPK signaling, and promote M2 macrophage polarization, thereby enhancing osteoimmune‐mediated bone regeneration and peri‐implant osseointegration.
Wanyi Huang, Qiyue Zhang, Yueyang Qiu, Haocheng Suo, Zengqian Liu, Bing Bai, Qiang Wang, Qing Zhou   +7 more
wiley   +1 more source

Densified micro-zone molten salt method for scale-up synthesis of high-entropy ceramic powders

Journal of Advanced Ceramics
Molten salt methods have been widely used in the synthesis of high-entropy ceramic powders, yet their scalable production for industrial applications is lacking.
Yongxin Wang, Ling Zhang, Tianyu Xue, Yabo Gao, Hang Li, Huicong Lei, Zhong Huang, Jinhui Cao, Haijun Zhang, Shaowei Zhang   +9 more
doaj   +1 more source

MOF‐Derived Cu‐TiO2/Alginate Micromotors for Buoyancy‐Regulated 3D Motion

Advanced Science, EarlyView.
In this work, cyanobacteria‐inspired sodium alginate (SA)/Cu‐TiO2/Fe3O4 hydrogel micromotors generate and encapsulate O2 microvesicles upon light irradiation, enabling buoyancy‐mediated Z‐axis upward migration and surface enrichment at the light‐exposed water‐air surface.
Wei Zou, Qing Wu, Jiawei Lin, Kunchen Li, Yulong Ying, Josep Puigmartí‐Luis, Salvador Pané, Sheng Wang   +7 more
wiley   +1 more source