Laser-preparation of geometrically optimised samples for X-ray nano-CT.

Laser-preparation of geometrically optimised samples for X-ray nano-CT.
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DOI:
10.1111/jmi.12577
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发表时间:
2017-09
影响因子:
2
通讯作者:
Shearing PR
Shearing PR
中科院分区:
工程技术4区
文献类型:
--
作者:
Bailey JJ;Heenan TMM;Finegan DP;Lu X;Daemi SR;Iacoviello F;Backeberg NR;Taiwo OO;Brett DJL;Atkinson A;Shearing PR

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提出了一种稳健且通用的样品制备技术,用于制造用于 X 射线纳米计算机断层扫描 (nano-CT) 成像的圆柱柱。该过程采用简单、经济高效的激光微加工,并在需要时结合聚焦离子束 (FIB) 铣削,以产生微米长度尺度的机械坚固的样品,以匹配纳米 CT 成像的视场 (FOV)。各种能源和地质材料作为案例研究展示,证明该过程可以应用于各种材料,以提供几何优化的样品,其尺寸和形状根据组成相的衰减系数进行定制。该程序可用于为各种样品的实验室和同步加速器 X 射线纳米 CT 研究定制支柱。
A robust and versatile sample preparation technique for the fabrication of cylindrical pillars for imaging by X‐ray nano‐computed tomography (nano‐CT) is presented. The procedure employs simple, cost‐effective laser micro‐machining coupled with focused‐ion beam (FIB) milling, when required, to yield mechanically robust samples at the micrometre length‐scale to match the field‐of‐view (FOV) for nano‐CT imaging. A variety of energy and geological materials are exhibited as case studies, demonstrating the procedure can be applied to a variety of materials to provide geometrically optimised samples whose size and shape are tailored to the attenuation coefficients of the constituent phases. The procedure can be implemented for the bespoke preparation of pillars for both lab‐ and synchrotron‐based X‐ray nano‐CT investigations of a wide range of samples.
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