Cryogenic Transmission Electron Microscope 1 Set

2026-11-03

Classification of the products to be procured : 2 Nature and quantity of the products to be purchased : Cryogeni Transmission Electron Microscope Set Type of the procurement : Purchase Basi requirements of the procurement : A cryogeni transmission electron microscope. A It should be equipped with a cold field emission gun, which produces a highly coherent electron beam. The energy spread is supposed to be less than 0. eV without using a monochromator. B The accelerating voltage should be higher than 30 kV. C The specimen can be tilted more than ±70°and the automated specimen exchange system should be equipped. It must be able to contain u to 1 grids at the same time. D The energy of electrons contributing to images and diffraction patterns should be selected by using an in-column type energy filter. E The microscope should have the phase plate system to enhance the small-angle scattered electron image contrast. F The system should contain a highly sensitive direct electron detector for image recording. It has 2 megapixels (5,76 × 4,092) field of view and the readout speed of 1,50 full frames per second. It should also have a tough camera for electron beam irradiation suitable for recording diffraction patterns with more than 4k × 4k pixels. A vacuum evaporator This is needed to prepare amorphous carbon layer for grid preparation. A The evacuation should be done by a turbomolecular pum and reachable vacuum degree should be higher than × 1 Pa. A glow discharger This is needed to hydrophilize the surface of the grid for grid preparation. A The size of the electrostati shield electrode should be larger than 5 mm in its diameter. An automated grid plunging device This is needed to perform plunge-freezing for vitrification of specimens. A The temperature of the specimen chamber should be controllable at the range from ℃ to 6 ℃. B The container should kee 1ℓ liquid nitrogen for one hour. Time limit for the submission of the requested material : 1 : 0 August, 202 Contact point for the notice : Hiroaki Kawamura, Procurement Services Office, Finance Department, Tohoku University, 2-1- Katahira Aoba-ku Sendai-shi 980-857 Japan TEL 022-217-4869

Japan

2026-07-06