In this work, we present a code that transforms 2D transmission electron microscopy images into 3D geometries for discrete dipole approximation simulations in DDSCAT 7.3.3 based on Python 3.
View Article and Find Full Text PDFJ Phys Condens Matter
July 2024
We present a numerical investigation of self-diffusion on strontium titanate TiO-terminated (001) surfaces via density functional theory. Our calculations first indicate that Ti has the highest diffusion barrier with approximately 2.20 eV, thus representing the rate-limiting step for surface self-diffusion.
View Article and Find Full Text PDFWe report the fabrication of HfZrO(HZO) based ferroelectric memory crosspoints using a complementary metal-oxide-semiconductor-compatible damascene process. In this work, we compared 12 and 56mcrosspoint devices with the 0.02 mmround devices commonly used as a benchmark.
View Article and Find Full Text PDFThe heterointegration of graphene with semiconductor materials and the development of graphene-based hybrid functional devices are heavily bound to the control of surface energy. Although remote epitaxy offers one of the most appealing techniques for implementing 3D/2D heterostructures, it is only suitable for polar materials and is hugely dependent on the graphene interface quality. Here, the growth of defect-free single-crystalline germanium (Ge) layers on a graphene-coated Ge substrate is demonstrated by introducing a new approach named anchor point nucleation (APN).
View Article and Find Full Text PDFWe investigate Raman spectra (100 cm to 3900 cm) of magnesium oxide nanoparticles with nominal sizes of 10 nm, 20 nm, 40 nm, 50 nm, and 300 nm. The crystal structure of MgO prohibits first-order modes and yet, there are numerous reports of relatively intense peaks throughout the literature. Raman signals at approximately 278 cm and 445 cm that were attributed to MgO nanoparticles by previous authors are shown to belong to layers of Mg(OH) formed on the surface of MgO nanoparticles.
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