The HRTEM imaging was performed at 300 kV using a ThermoFisher Titan microscope with a field emission gun and monochromator. The best sample area was searched in real space at a dose rate of 0.01 e -Å -2 s -1 at 5 kx. A well-faceted ZIF-8 particle, oriented along [111] zone axis, was selected for HRTEM imaging. Magnification was increased to 87 kx; the ZIF-8 particle was imaged with an approximate electron dose rate of 0.5 e -Å -2 s -1 . The beam was blanked at any intermediate stage. Finally, the magnification increased to 145 kx. The HRTEM was acquired at a dose rate of 5.2 e -Å -2 s -1 with an exposure time of 3 seconds, with a total dose of image acquisition around 15.6 e -Å -2 . The cumulative dose during the pre-imaging stages, such as sample searching, zone axis alignment, and focusing, was around 3 e -Å -2, which adds to the total cumulative dose of the HRTEM imaging of around 19 e -Å -2 . The power spectrum was calculated from the modulus of the complex fast fourier transform (FFT) from the HRTEM image.