Extraordinary Absorption of Decorated Undoped Graphene

Extraordinary absorption of decorated undoped graphene.

We theoretically study absorption by an undoped graphene layer decorated with arrays of small particles. We discuss periodic and random arrays within a common formalism, which predicts a maximum absorption of 50% for suspended graphene in both cases. The limits of weak and strong scatterers are investigated, and an unusual dependence on particle-graphene separation is found and explained in ter...

Dynamically tunable extraordinary light absorption in monolayer graphene

Alireza Safaei,1,2 Sayan Chandra,2 Abraham Vázquez-Guardado,2,3 Jean Calderon,4 Daniel Franklin,1,2 Laurene Tetard,1,2 Lei Zhai,2,4 Michael N. Leuenberger,1,2,3 and Debashis Chanda1,2,3,* 1Department of Physics, University of Central Florida, Orlando, Florida 32826, USA 2NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, USA 3CREOL, The College of Optics and P...

Inorganic Nanostructures Decorated Graphene

DNA-decorated Graphene Chemical Sensors

Graphene is a two-dimensional material with exceptional electronic properties and enormous potential for applications. Graphene’s promise as a chemical sensor material has been noted but there has been little work on practical chemical sensing using graphene, and in particular, how chemical functionalization may be used to sensitize graphene to chemical vapors. Here we show one route towards im...

Transport in indium-decorated graphene

The electronic transport properties of single layer graphene having a dilute coating of indium adatoms has been investigated. Our studies establish that isolated indium atoms donate electrons to graphene and become a source of charged impurity scattering, affecting the conductivity as well as magnetotransport properties of the pristine graphene. Notably, a positive magnetoresistance is observed...