TY - JOUR A1 - Gonzalez-Martinez, I. A1 - Weinel, Kristina A1 - Feng, W. A1 - Agudo Jacome, Leonardo A1 - Gemming, T. A1 - Büchner, B. T1 - Hybrid tungsten-carbon 2D nanostructures via in-situ gasification of carbon substrates driven by ebeam irradiation of WO2.9 microparticles N2 - Since the TEM has the capacity to observe the atomic structure of materials, in-situ TEM synthesis methods are uniquely suited to advance our fundamental understanding of the bottom-up dynamics that drive the formation of nanostructures. E-beam induced fragmentation (potentially identified as a manifestation of Coulomb explosion) and electron stimulated desorption (ESD) are phenomena that have received attention because they trigger chemical and physical reactions that can lead to the production of various nanostructures. Here we report a simple TEM protocol implemented on WO2.9 microparticles supported on thin amorphous carbon substrates. The method produces various nanostructures such as WC nanoparticles, WC supported films and others. Nevertheless, we focus on the gradual graphitization and gasification of the C substrate as it interacts with the material expelled from the WO2.9 microparticles. The progressive gasification transforms the substrate from amorphous C down to hybrid graphitic nanoribbons incorporating W nanoparticles. We think these observations open interesting possibilities for the synthesis of 2D nanomaterials in the TEM. KW - Transmission electron microscope (TEM) KW - in-situ synthesis KW - Tungsten carbide KW - Nanoribbons KW - Coulomb explosion PY - 2023 U6 - https://doi.org/10.1088/1361-6528/acf584 SN - 0957-4484 VL - 34 IS - 49 SP - 1 EP - 15 PB - IOP Publishing AN - OPUS4-58279 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -