electron micrograph An image obtained by bombarding the specimen with a finely focused (<10 nm diameter) electron beam with an acceleration voltage under vacuum, and detecting the transmitted, secondary, backscattered and diffracted electrons, and characteristic X-rays emitted. CHMO:0001800 electron microscopy image 2009-05-21T01:44:13Z EM image electron microphotograph https://orcid.org/0000-0001-5985-7429 EM micrograph micrograph