Nano Brazing of Pt-Ag Nanoparticles under Femtosecond Laser Irradiation

来源 :Nano-Micro Letters | 被引量 : 0次 | 上传用户:A251321741
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Nano brazing of Pt-Ag nanoparticles with nano Ag filler metal is reported in this letter, which presents an effective way to join nanoobjects by femtosecond laser irradiation. The nano brazed interface between Pt-Ag and Ag showed good lattice matching along(111)_(Ag) //(111)_(Ag-Pt). Lattice mismatch can hardly be observed at the interface between the filler metal and Pt-Ag nanoparticle, which is important for the joint strength and normally does not occur during joining. The very low mismatch also suggested that melting and solidification occurred during nano brazing by femtosecond laser. The role of Brownian motion on the nano joining process is also discussed in this paper. Nano brazing of Pt-Ag nanoparticles with nano Ag filler metal is reported in this letter, which presents an effective way to join nanoobjects by femtosecond laser irradiation. The nano brazed interface between Pt-Ag and Ag showed good lattice matching along (111) _ (Ag) // (111) _ (Ag-Pt). Lattice mismatch can hardly be observed at the interface between the filler metal and Pt-Ag nanoparticle, which is important for the joint strength and normally does not occur during joining. very low mismatch also suggests that melting and solidification occurred during nano brazing by femtosecond laser. The role of Brownian motion on the nano joining process is also discussed in this paper.
其他文献
Microfluidics has been considered as a potential technology to miniaturize the conventional equipments and technologies. It offers advantages in terms of small
随着信息技术的发展及互联网用户的急速增长,在信息化办公时代到来的同时,数据安全问题已成为全球关注的焦点。传统的个人或企业存储设备和存储安全性已不能满足当代数据存储的需求,数据信息的完整性和可用性是企业存亡之关键,信息系统一旦受到攻击或面临威胁,将对企业造成不可估量的损失。企业信息的灾备保护技术越来越得到广泛的应用并已成为企业信息系统的基本安全措施。特别是近年来迅速发展的电商企业,如淘宝、京东、当当
目的 观察自行研制合成的骨形成蛋白2(BMP2)活性多肽与Ⅰ型胶原复合煅烧骨复合材料修复骨缺损的作用.方法 实验分3组.A组:单纯煅烧骨组;B组:含Ⅰ型胶原的煅烧骨组;C组:BMP2活性多肽与Ⅰ型胶原复合煅烧骨组.3组材料植入前分别电镜扫描观察.取大白兔36只,随机分成3组,建立桡骨中段10 mm骨缺损模型,分别将材料植入兔桡骨缺损处,术后4、8、12周行X线评分,8、12周行组织形态学观察与评分
目的 观察两种丝素蛋白/羟基磷灰石(SF/HA)的细胞相容性及异位成骨作用.方法 相差显微镜及扫描电镜观察兔骨髓基质细胞(BMSCs)在两种SF/HA上的生长;测定ALP活性及噻唑蓝(MTT)比色法测定细胞增殖;材料浸提液的细胞毒性试验.将成骨诱导的兔BMSCs与材料复合培养3 d后植入兔背部肌肉中,进行异位成骨观察.结果 BMSCs在两种材料上能够良好地黏附和增殖,细胞活性及成骨性能不受材料影响
进入智能化移动互联网时代,黑客攻击成为重要安全隐患。本文从维基解密曝光的美国中央情报局智能设备监听切入,重点分析智能电视入侵的基本方法和主要途经,并提出应对方法及安全策略。
期刊
讨论了采用Ⅲ-V族化合物材料制备多结太阳电池时的材料选择和实现方案,重点探讨了采用渐变缓冲层、引入InGaAsN等新材料以及直接键合等三种方法.其中,采用渐变缓冲层结构的Ge
Switchable diode effect in ferroelectric diodes has attracted much attention for its potential applications in novel nonvolatile memories. We briefly review rec
随着大数据时代的到来,移动数据呈现出爆炸式增长,各行各业产生的海量数据需求必然会对传统通信网络带来巨大挑战。目前,5G网络即第五代移动通信系统已成为下一步研究与发展的重点,但其技术发展尚未成熟。2015年6月24日,国际电信联盟公布5G技术标准化时间表,5G技术的正式名称为IMT-2020,5G标准将在2020年制定完成。基于此,本文结合国内外移动通信发展的最新趋势,概括性的介绍了5G网络的关键技
介绍了一种基于GaAs HFET结构的S波段内匹配器件的设计方法。由于大栅宽器件模型难以准确确定,提取了具有相似结构的小栅宽器件模型。在ADS设计环境中,利用Load-Pull算法推算