Bragg coherent x-ray diffractive imaging of a single indium phosphide nanowire
Bragg coherent x-ray diffractive imaging of a single indium phosphide nanowire
复制标题
单根磷化铟纳米线的布拉格相干 X 射线衍射成像
DOI：
10.1088/2040-8978/18/6/064007
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发表时间：
2016
影响因子：
2.1
通讯作者：
I. Vartanyants
中科院分区：
文献类型：
--
作者：
D. Dzhigaev;A. Shabalin;T. Stankevič;U. Lorenz;R. Kurta;F. Seiboth;J. Wallentin;Andrej Singer;S. Lazarev;O. Yefanov;Magnus T. Borgström;M. Strikhanov;Lars Samuelson;G. Falkenberg;Christian G. Schroer;Anders Mikkelsen;R. Feidenhans'l;I. Vartanyants
采用纳米聚焦光束的三维布拉格相干x射线衍射成像（CXDI）技术，定量绘制了单根磷化铟纳米线的内部应变场。应变的定量值是通过在测试样品上用透射型图对光束轮廓进行预表征而得到的。我们的测量揭示了在催化剂Au颗粒下方150nm区域的三维应变分布。我们观察到应变沿纳米线[111]生长方向有±0.6%的轻微梯度。我们还确定了在垂直于纳米线表面的方向上，我们测量的空间分辨率约为10纳米。将CXDI测量结果与有限元模拟结果进行了比较，结果与实验结果吻合较好。该方法可为纳米线的内部操作研究提供有效的工具。
Three-dimensional (3D) Bragg coherent x-ray diffractive imaging (CXDI) with a nanofocused beam was applied to quantitatively map the internal strain field of a single indium phosphide nanowire. The quantitative values of the strain were obtained by pre-characterization of the beam profile with transmission ptychography on a test sample. Our measurements revealed the 3D strain distribution in a region of 150 nm below the catalyst Au particle. We observed a slight gradient of the strain in the range of ±0.6% along the [111] growth direction of the nanowire. We also determined the spatial resolution in our measurements to be about 10 nm in the direction perpendicular to the facets of the nanowire. The CXDI measurements were compared with the finite element method simulations and show a good agreement with our experimental results. The proposed approach can become an effective tool for in operando studies of the nanowires.
影响因子：
3.8
作者：
Doering, F.;Robisch, A. L.;Krebs, H. U.
通讯作者：
Krebs, H. U.