Results 11 to 20 of about 680,756 (161)
Guangtongxin yanjiu, 2019 为了在理论和实际中研制能够产生高效平坦宽带中红外超连续谱的光纤,文章提出一种以三硒化二砷（As2Se3）为背景材料的微结构光纤,利用非线性薛定谔方程计算模拟了光纤的结构参数对色散、耗损与非线性特性的影响,选取优化结构参数实现高非线性色散平坦全正常色散。采用该结构光纤对中超短脉冲的展宽机制进行分析,研究了光纤长度、泵浦中心波长、峰值功率以及泵浦宽度等参数对超连续谱生成的影响,并通过此光纤实现平坦中红外超连续谱的输出。搭建了实验平台 ...
魏红彦
doaj +2 more sources
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian +7 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2003 合成3种双核铂类配合物[{Pt(H2O)2I}μ—OOC—(CH2—)nCOO—{Pt(H2O)2I}](1~3)(n=0,1,2).用元素分析、摩尔电导、差热热重分析、红外光谱、紫外光谱和核磁共振氢谱等方法对其进行了表征.体外抗肿瘤活性表明,配合物1和3对多种人的肿瘤细胞有较高的活性,配合物2没有抗肿瘤活性.
ZHANGJin-chao(张金超) +6 more
doaj +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The intricate corrosion environment necessitates the polymeric coating's adaptability to the surroundings. In this work, the integration of rare‐earth Ce(III) ions and ethylene diamine tetramethylene phosphonic acid (EDTMP) in a layered double hydroxide (LDH) material is developed to enhance the corrosion protection and anti‐wear properties of
Yangu Liu +9 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2004 用溶胶-凝胶法合成了发蓝绿光的4SrO·7Al2O3:Eu2+高显色荧光粉.从XRD、DTA以及红外谱图得出当干凝胶经1200℃灼烧可以完全形成4 SrO·7Al2O3晶相,这比用高温固相合成法低了200℃.通过激发光谱和发射光谱分析其发光特性,随着灼烧温度的升高,其发光强度增大.
WANGXiao-ge(王晓格) +4 more
doaj +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT With the growing severity of volatile organic compounds (VOCs) pollution, metal‐organic frameworks (MOFs)‐derived materials offer a promising solution through efficient photothermal catalysis. In this paper, M‐MnOx (M = Cu, Ni, Co, Fe) catalysts derived from manganese‐based MOFs were successfully prepared by the sacrificial template method and
Yizhong Liao +10 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2007 采用激光诱导化学气相沉积法制备出超细（7~15 nm）、理想化学剂量(N/Si= 1.314)、无团聚的非晶纳米氮化硅粉体.为了提高粉体的纯度，在传统激光诱导化学气相沉积装置中加一束正交的紫外光束，以促进NH3分子光解，从而减少游离硅的存在，提高N/Si原子数比.观察到了红外吸收光谱中的“蓝移”和“宽化”现象，并认为这些现象是由表面效应和量子尺寸效应造成的.同时，红外吸收光谱的反常现象也验证了粉体的纳米特性.
WANGRui(王锐) +3 more
doaj +1 more source
Dimensional Assembly Engineering of Ce‐MOF Interfaces for Selective Recognition of Phytic Acid
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Selective molecular recognition is central to chemical sensing yet discriminating structurally similar molecules at complex interfaces remains challenging. Traditional strategies based on tuning size, charge, or binding‐site chemistry often suffer from limited flexibility.
Qiang Miao +7 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2002 合成3个新的双核铂(Ⅱ)类配合物,用元素分析、红外和紫外光谱、氢核磁共振谱及摩尔电导和热谱等方法对其进行了性质表征,并对它们进行了抗肿瘤活性的初步研究.
ZHANGJin-chao(张金超) +6 more
doaj +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The residue of mesotrione poses an increasingly serious threat to the environment and human health. Thus, it is essential to establish a platform that integrates rapid detection and efficient degradation. Covalent organic frameworks (COFs) materials have garnered significant attention owing to their designability.
Yong Xie +3 more
wiley +1 more source