to the passage below and then answer the question afterwards in the same language as the passage: Passage: High-resolution transmission electron microscopy (HRTEM) (or HREM) is an imaging mode of specialized transmission electron microscopes (TEMs) that allows for direct imaging of the atomic structure of the sample. HRTEM is a powerful tool to study properties of materials on the atomic scale, such as semiconductors, metals, nanoparticles and sp2-bonded carbon (e.g., graphene, C nanotubes). While HRTEM is also often used to refer to high resolution scanning TEM (STEM, mostly in high angle annular dark field), this article describes mainly the imaging of an object by recording the 2D spatial wave amplitude distribution in the plane, image in analogy to a "classic" light microscope. For disambiguation, the contrast is also referred to as atomic structure of the sample. HRTEM is a powerful tool to study properties of materials on the atomic scale, such as semic conductors, metals, nan
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