Table : Dose rate measurement in vacuum with 2k x 2k imaging using Gatan OneView camera at 300 kV on ThermoFisher Titan microscope at 13.5 kx. Further, the effect of the electron dose rate on the critical dose of the ZIF-8 was investigated. The TEM images of the electron beam in the vacuum region with varying beam current and corresponding line profiles of electron counts are shown in fig. ) and S2(e-h), respectively. The average electron counts per pixel, pixel size, and exposure time required for calculating dose rates are given in Table . Fig. )