Results 41 to 50 of about 32,994 (251)
Rare Metals, EarlyView.ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang +9 more
wiley +1 more source
Engineering 2D Materials for High‐Current‐Density Electrocatalytic Water Splitting
Rare Metals, EarlyView.ABSTRACT Water electrolysis is a key method for sustainable hydrogen production, using water as an abundant resource. However, efficient and stable operation at high current densities remains challenging due to energy losses, catalyst degradation, and limited ion–electron transport.
Tianqi Guan +8 more
wiley +1 more source
Smart Biomaterials and Dressings for the Treatment of Chronic Inflammatory Skin Diseases
Rare Metals, EarlyView.ABSTRACT Chronic inflammatory skin diseases, encompassing immune‐inflammatory conditions and infection‐associated dermatoses, pose significant clinical challenges due to high prevalence, recurrence, and therapeutic resistance, affect over 30% of the global population.
Zehao Lan +5 more
wiley +1 more source
Orbitally Driven Anomalous Thermal Transport Under High Pressure in Gallium Nitride
Rare Metals, EarlyView.ABSTRACT Extreme conditions such as high pressure offer opportunities for innovative materials design and applications. For over a century, studies on thermal transport in crystals under high hydrostatic pressure have shown that lattice thermal conductivity generally exhibits a monotonic increase with pressure.
Zong‐Hao Yuan +8 more
wiley +1 more source
Gaoya dianqi, 2017 接地模拟试验是实现接地网参数预测与接地特性分析的基本方法。一些接地材料如柔性石墨复合接地材料、离子接地体以及接地模块等在进行接地模拟试验时,其部分相似项并不能按照相似条件进行缩比,使得接地网原型的预测误差较大。针对此问题,笔者首先阐述了接地模拟试验的畸变相似模型,分析接地模拟试验中畸变相似项的来源,然后提出畸变系数与畸变项敏感度的概念。最后通过仿真实例和实际接地模拟试验,分析不同土壤电阻率与模型相似比条件下,接地模拟试验对接地体直径畸变项与接地体电阻率畸变项的敏感度 ...
高晓东 +5 more
doaj
Rare Metals, EarlyView.ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
wiley +1 more source
Effects of Silica on Phase Transformation and Microstructure of Sol-Gel Derived Zirconia Fibers [PDF]
, 2015 本论文以氧化锆溶胶和二氧化硅溶胶为原料，采用溶胶凝胶法制备了不同二氧化硅含量的氧化锆陶瓷纤维。其中氧化锆溶胶采用氧氯化锆和过氧化氢反应合成，二氧化硅溶胶由实验室自制得到。采用29SiNMR、XRD、FTIR、SEM、TEM、TG-DTA等技术系统地研究了SiO2和Y2O3对溶胶凝胶法制备的ZrO2纤维相变和微观组织的影响。 研究发现，氧化锆溶胶中主要是以“Zr-O-Zr”长链结构形式存在，从而形成可纺性的溶胶。在纯氧化锆纤维中加入二氧化硅后，稳定了氧化锆的四方相，从而避免形成“皮芯结构”的纤维 ...
蔡武集
core
Rare Metals, EarlyView.ABSTRACT Transition metal‐based amorphous/crystalline (a/c) heterostructured catalysts have garnered significant attention due to their exceptional activity, stability, and cost‐effectiveness. However, the precise synergistic regulation of interfacial composition and phase states remains challenging.
Haoran Li +3 more
wiley +1 more source
Research on Patterning Fingerprint Texture for Cholesteric Liquid Crystal Gratings [PDF]
, 2016 胆甾相液晶指纹织构光栅是基于胆甾相液晶在平面内的周期性排列的相位光栅，由于其在光束调制器件上的应用前景，近几年成为了面向非显示应用的液晶研究领域中的热点之一。聚合物稳定的胆甾相液晶指纹织构光栅实现了零电场下稳定的液晶光栅阵列，发挥了聚合物高分子材料和液晶相结合的优势，可以克服胆甾相液晶指纹织构光栅实用性低的缺点；在此基础上，实现胆甾相液晶指纹织构光栅的聚合稳定图案化的多样性和微型化，将会拓展胆甾相液晶指纹织构光栅在光束调制器、光通讯、显示等领域的应用。基于光控取向的胆甾相液晶指纹织构光栅图案化 ...
罗斌
core