Results 21 to 30 of about 12,289 (167)
ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
wiley +1 more source
本文介绍X射线晶体衍射的测试原理,讨论了半导体薄片异质结构材料X射线晶体衍射测量中正、负失配,晶片微弯曲,摇摆曲线的对称性,复杂曲线的分解、干涉带等问题。指出了晶体衍射测试结果对MOCVD、LPE工艺调整的重要性。
丁国庆
doaj
Studies on Multiwavelength Radiation of X-ray Binaries and Magnetohydrodynamic Turbulence [PDF]
本学位论文的研究主要致力于两个科学目标,其一是理解~X~射线双星多波段辐射的起源及特性;其二是基于同步辐射偏振色散的统计技术,使用 数值模拟方法研究磁流体力学(MHD)湍流的性质。基于强子或轻子主导辐射的假设,论文建立~X~射线双星主要活动区的辐射模型, 如喷流底、中部区、喷流终端与周围星际介质(ISM)作用区、吸积盘、磁层等辐射区,研究多波段光子谱及高能中微子的辐射。 MHD\湍流是天体内部物质运动的必然结果,研究它有重要意义,因为对它的研究不仅可以促进人们理解~X~射线双星的高能过程 ...
张建福
core
ABSTRACT Photodetectors, based on GaAs nanowires (NWs), hold significant promise in the fields of high integration micro‐ and nano‐optoelectronics applications because of their outstanding electronic and optical properties. To date, significant efforts have been directed toward enhancing the performance of photodetectors, aiming for high detectivity ...
Yu Hao +11 more
wiley +1 more source
Surface and Interfacial Structure Control of Pd and Pt Based Nanomaterials and Their Catalytic Applications [PDF]
贵金属纳米材料由于其独特的光学、电学、磁学和催化等性质被广泛应用于能源、环保、食品加工等重要领域。合成纳米新材料,发现新性能容易,但在分子水平上理解其性能本质却很困难。近年来的研究发现,贵金属催化剂的催化活性和选择性与催化剂的表面和界面结构密切相关。因此,制备尺寸、形貌和组成可控的贵金属纳米材料,并深入研究其尺寸、组成、表面结构和界面结构与催化性能之间的构效关系显得尤为重要。本论文的工作主要围绕钯铂纳米材料的表界面调控与催化性能之间的关系展开。全文共分为七章,各章内容概括如下: 第一章 ...
赵小静
core
ABSTRACT The high accuracy in surface‐enhanced Raman scattering‐lateral flow immunoassays (SERS–LFIAs) is critical for reliable point‐of‐care testing (POCT) in clinical diagnostics. Conventional approaches are often affected by sampling variability and uneven distribution of immunoprobes, leading to unreliable signal fluctuations.
Shuai Zhao +9 more
wiley +1 more source
ABSTRACT Organic‐inorganic hybrid perovskites (OIHPs) with white‐light emission have significant potential in solid‐state lighting and display due to the designable structure and excellent luminescent properties. However, OIHPs are prone to damage during bending due to the brittleness of crystals, which limits their application in the field of flexible
Jinyu Xu +8 more
wiley +1 more source
本研究旨在制备辐射剂量响应、辐射稳定性优异的塑料闪烁光纤(PSF)及具有优异X射线成像性能与多功能特性的新型闪烁光纤阵列。以稀土配合物和有机物为掺杂剂,采用Teflon法制备红、绿、蓝三色塑料闪烁光纤(分别标记为PSF-R、PSF-G、PSF-B),并通过调控三色塑料闪烁光纤的排布方式和几何结构,制备不同类型的塑料闪烁光纤阵列。结果显示,PSF-R、PSF-G、PSF-B均表现出优异的辐射响应特性,剂量检测限分别为0.555 μGy/s、2.775 μGy/s和2.22 μGy/s ...
刘 碧武 +3 more
doaj +1 more source
Local hot gas survey based on OVII and OVI Absorption Lines [PDF]
活动星系核是研究本征于星系的中央黑洞和沿吸收线分布的吸收气体的直接环境的非常有效的工具。背景活动星系核的X射线光谱中可以探测到许多高度电离的本地吸收线,这些高度电离的吸收线可以帮助理解银河系内部和周围的热气体及其含量。三种最有可能的X射线吸收体的起源是:起源于盘,起源于广延的星系晕,起源于本星系群中热气体团际介质。理解银盘、厚盘和晕气体中在温度时产生气体的过程,是了解星系中气体的生命周期的重要因素。这些气体可能是由超新星、星风和掉落产生的,这些气体的存在可以追踪星系演化周围的环境 ...
王苗
core
Plant phenomics is under rapid development in recent years, a research field that is progressing towards integration, scalability, multi-perceptivity and high-throughput analysis.
Guohui, Ding +6 more
core +1 more source

