Vibrational properties of black phosphorus edges unveiled by MackGraphe
The international scientific journal Nature Communications, from the Nature Publishing Group, published, on July 14, an article gathering experimental and theoretical results about the vibrational properties of black phosphorus edges, a crystal consisting of a stack of two-dimensional layers of phosphorus atoms.
The study, conducted by Henrique Ribeiro, Dr. Christiano J. S. de Matos, Dr. Dario Bahamon, Prof. Thoroh de Souza, all from MackGraphe – the Graphene and Nanomaterials Research Center at the Mackenzie Presbyterian University – and by five other specialists from Universidade Estadual Paulista “Julio de Mesquita” (Unesp), Universidade Estadual de Campinas (Unicamp), Universidade Federal de Minas Gerais (UFMG) and the National Singapore University (NUS), unveils a previously unknown property of black phosphorus, which can ultimately contribute to the development of nanodevices with improved performance.
Since graphene was first isolated, back in 2004, researchers from all over the world have demonstrated its potential to electronic and optoelectronic applications. Part of the research has also focused on finding other atomically thin nanomaterials with similar or complementary properties. The latest crystal to join this high-tech group of materials is black phosphorus.
Discovered in 1914, the material is not found in nature and received relatively limited interest during the first century after its synthesis. However, interest has boomed since 2014, when it was demonstrated that black phosphorus can be mechanically exfoliated with an adhesive tape (the same method used to isolate graphene), leading to crystals with few-atom thicknesses.
Unlike graphene, a single layer of black phosphorus, which became known as phosphorene, exhibits a “puckered” structure