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50 years of scanning electron microscopy of bone——a comprehensive overview of the important discoveries made and insights gained into bone material properties in health,disease,and taphonomy

查看全文 作　　者：Furqan [1]A.Shah;Krisztina [1]Ruscsák;Anders [1]Palmquist 高影响力作者 机构地区：[1]Department of Biomaterials,Sahlgrenska Academy,University of Gothenburg高影响力机构 出　　处：《Bone Research》索引2019年第7卷第2期,共15页高影响力期刊 基　　金：Financial support is acknowledged from the Swedish Research Council(K2015-52X-09495-28-4);Svenska Sallskapet for Medicinsk Forskning(SSMF)postdoctoral scholarship,the ALF/LUA Research Grant(ALFGBG-448851) 摘　　要：Bone is an architecturally complex system that constantly undergoes structural and functional optimisation through renewal and repair.The scanning electron microscope (SEM) is among the most frequently used instruments for examining bone.It offers the key advantage of very high spatial resolution coupled with a large depth of field and wide field of view.Interactions between incident electrons and atoms on the sample surface generate backscattered electrons,secondary electrons,and various other signals including X-rays that relay compositional and topographical information.Through selective removal or preservation of specific tissue components (organic,inorganic,cellular,vascular),their individual contribution(s) to the overall functional competence can be elucidated.With few restrictions on sample geometry and a variety of applicable sample-processing routes,a given sample may be conveniently adapted for multiple analytical methods.While a conventional SEM operates at high vacuum conditions that demand clean,dry,and electrically conductive samples,non-conductive materials (e.g.,bone) can be imaged without significant modification from the natural state using an environmental scanning electron microscope.This review highlights important insights gained into bone microstructure and pathophysiology,bone response to implanted biomaterials,elemental analysis,SEM in paleoarchaeology,3D imaging using focused ion beam techniques,correlative microscopy and in situ experiments.The capacity to image seamlessly across multiple length scales within the meso-micro-nano-continuum,the SEM lends itself to many unique and diverse applications,which attest to the versatility and user-friendly nature of this instrument for studying bone.Significant technological developments are anticipated for analysing bone using the SEM. 关 键 词：SCANNING electron MICROSCOPY COMPREHENSIVE OVERVIEW important discoveries
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