Assembling phosphorene flexagons for 2D electron-density-guided nanopatterning and nanofabrication. Issue 29 (13th July 2017) - Kang, Kisung
Abstract : To build upon the structural diversity in the polymorphic phases of 2D phosphorene, we propose different assembly methods that involve four commonly reported parent phases ( i.e. the α-, β-, γ-, and δ-phosphorene) in combination with the lately reported low-energy one-dimensional defects in α-phosphorene. Abstract : To build upon the rich structural diversity in the ever-increasing polymorphic phases of two-dimensional phosphorene, we propose different assembly methods (namely, the "bottom-up" and "top-down" approaches) that involve four commonly reported parent phases ( i.e. the α-, β-, γ-, and δ-phosphorene) in combination with the lately reported remarkably low-energy one-dimensional defects in α-phosphorene. In doing so, we generate various periodically repeated phosphorene patterns in these so-called phosphorene flexagons and present their local electron density ( via simulated scanning tunneling microscopy (STM) images). These interesting electron density patterns seen in the flexagons (mimicking symmetry patterns that one may typically see in a kaleidoscope) may assist as potential 2D templates where electron-density-guided nanopatterning and nanofabrication in complex organized nanoarchitectures are important.