摘要：In-situ transmission electron microscopy(TEM)has been demonstrated to be a powerful method in resolving challenging problems such as interactions among various *** take advantage of the atomic resolution of advanced TEMs,a compact five-degree-of-freedom nanomanipulator was integrated with an indenter that was made of nanotwinned diamonds,for both the in-situ mechanical testing and double tilting of TEM *** a demonstration,in-situ bending tests were performed on the?111?,?110?and?100?single-crystal diamond *** tests revealed the{111}cleavage to be the dominant failure *** in-situ indentation on a diamond nanoplate led to curved cracks consisting of nanometer-scale steps,which were identified to be atomic flat{111}*** atomic-scale observation of the deformation and failure of diamonds demonstrated the stability of the entire system and the durability of the *** expect that more delicate research can be carried out by means of this holder in the near future,including in-situ stimulation,atomic characterization,and tomography.