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Laser‐preparation of geometrically optimised samples for X‐ray nano‐CT
Author(s) -
BAILEY J.J.,
HEENAN T.M.M.,
FINEGAN D.P.,
LU X.,
DAEMI S.R.,
IACOVIELLO F.,
BACKEBERG N.R.,
TAIWO O.O.,
BRETT D.J.L.,
ATKINSON A.,
SHEARING P.R.
Publication year - 2017
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/jmi.12577
Subject(s) - materials science , nano , fabrication , nanoscopic scale , synchrotron , focused ion beam , laser , attenuation , tomography , x ray , optics , nanotechnology , ion , chemistry , composite material , physics , medicine , alternative medicine , organic chemistry , pathology
Summary 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.