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Preparing samples for the electron microscope using sublimable naphthalene

Abstract: Sample preparation is significantly important to the high-resolution transmission electron microscopy (HRTEM) characterization of nanomaterials. However, many general organic solvents can dissolve the necessary organic polymer support layer in TEM grid, which causes it difficult to obtain high-quality samples of oil-soluble nanomaterials. In this study, a new sample preparation method for oil-soluble nanomaterials has been developed by using the sublimable material as a transition layer. Experiments also show that there is no damage to TEM grids and high-quality HRTEM images can be obtained via this method. This approach paves the way to applicable HRTEM sample preparation of oil-soluble nanomaterials. Keywords: Transmission electron microscopy, Sample preparation, Oil-soluble nanomaterial, Sublimable material, naphthalene Cite this article: Deng, YH. Sublimable materials facilitate the TEM sample preparation of oil-soluble nanomaterials. Appl. Microsc. 50, 21 (2020). https://doi.org/10.1186/s42649-020-00042-7

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