Atom-holography microscope reveals 3D atomic structures without a synchrotron A new atom holography microscope uses a focused SEM beam to map 3D atomic arrangements in nanoscale regions with about 0.1 angstrom accuracy. The method provides local 3D atomic imaging within areas defined by the nanoscale electron beam. The group previously developed atomic resolution holography, an element specific method for examining three dimensional atomic structures. CoDELMA atom-holography microscope (Image: IMS)Atom holography microscope test on bismuth selenideThe researchers tested the instrument using a bismuth selenide crystal, Bi2Se3. Laboratory based 3D atomic imagingThe atom holography microscope operates by directing the nanoscale electron beam of a widely available SEM onto a sample.