Growth mechanisms of hBN crystalline nanostructures with rf sputtering deposition: challenges, opportunities, and future perspectives

Abstract

Most hBN nanostructures were fabricated using the chemical method. However, growing by the physical method also has many advantages, they are easy to synthesize this material on a large area with up-scaling setups. Even two-dimensional hexagonal boron nitride is similar to graphene structure, however there is a little work referring to the fabrication process of this material. Hence, a sufficiently detailed report on physically fabricated hBN materials is essential. This review analyzes the results that we have studied over the past ten years with the synthesis and fabrication of this material using physical vapor deposition – RF sputtering, incorporation with other techniques, strongly emphasized on growth mechanisms of this material.

Synthesis, Properties, and Application of Ultrathin and Flexible Tellurium Nanorope Films: Beyond Conventional 2D Materials

“…In contrast, magnetic fields are stronger at high RF values, resulting in the formation of 2D Te nanofilms instead of Te nanoropes. [25] Raman-active modes-E and A modes-were observed in the Raman spectra of Te nanorope samples (Figure 2a; and Figure S7a-S7d, Supporting Information) with varying thicknesses (5, 7, 14, and 28 nm). These modes corresponded to the chain expansion in the basal plane, as well as bond-bending and asymmetric stretching mostly along the [0001] helical chain.…”