方案摘要
方案下载应用领域 | 其他 |
检测样本 | 其他 |
检测项目 | |
参考标准 | 暂无 |
The influence of the pulse duration was investigated using a picosecond pulsed laser (Atlantic 532, Ekspla) with a wavelength of 1064 nm, a pulse duration of 10 ps, a pulse energy of 160 μJ, a repetition rate of 100 kHz, and a focal distance of 100 mm.
This work highlights a strategy for the one-step synthesis of FeAu nanoparticles by the pulsed laser
ablation of alloy targets in the presence of different solvents. This method allows particle generation
without the use of additional chemicals; hence, solvent-metal interactions could be studied without
cross effects from organic surface ligands. A detailed analysis of generated particles via transmission
electron microscopy in combination with EDX elemental mapping could conclusively verify that the
nature of the used solvent governs the internal phase structure of the formed nanoparticles. In the
presence of acetone or methyl methacrylate, a gold shell covering a non-oxidized iron core was formed,
whereas in aqueous media, an Au core with an Fe3O4 shell was generated. This core-shell morphology
was the predominant species found in >90% of the examined nanoparticles. These findings indicate
that fundamental chemical interactions between the nanoparticle surface and the solvent significantly
contribute to phase segregation and elemental distribution in FeAu nanoparticles. A consecutive
analysis of resulting Fe@Au core-shell nanoparticles revealed outstanding oxidation resistance
and fair magnetic and optical properties. In particular, the combination of these features with high
stability magnetism and plasmonics may create new opportunities for this hybrid material in imaging
applications.
在一个双稳湍流涡旋火焰中,对间歇性动态的时间-频率定位
Particle-laden Taylor-Couette流:高阶转变和径向局部波浪涡旋的证据
7根杆束的流体-结构相互作用:用实验数据对比数值模拟
相关产品
汽车光学检测系统AIS
PT403型波长可调谐皮秒激光器
ANL系列高能量高重复频率DPSS纳秒激光器
APL4206 系列高能量皮秒激光放大器
UltraFlux FF/FT 5000 高能量可调谐飞秒激光器系统
UltraFlux FT300型波长可调谐飞秒激光器系统
Ekspla 超高功率激光器系统SYLOS 2A
LaVision PTUx 可编程时间控制单元
LaVision 用于粒子成像测速PIV的相机
LaVision StrainMaser 全场应变测试系统组件
LaVision 用于数字图像相关DIC的相机
LaVision StrainMaster 数字图像相关分析软件包
LaVision 标定板
LaVision StrainMaster 形变应变成像测量系统
LaVision StrainMaster DVC 体视全场应变测量系统
关注
拨打电话
留言咨询