transmission electron microscope high-resolution transmission electron microscope high resolution transmission electron microscope A piece of apparatus which is used to produce an enlarged image of an electron transparent specimen using several finely focused (<10 nm diameter) electron beams with an acceleration voltage of 50–150 kV under vacuum. The amplitude of the interference of the transmitted electron waves is then measured and the phase contrast is used to produce an image. HRTEM https://orcid.org/0000-0001-5985-7429 high-resolution (HR) TEM CHMO:0002323 2009-09-01T01:32:33Z