Hyperspectral Raman imaging using Bragg tunable filters of graphene and other low-dimensional materials

摘要: Hyperspectral Raman imaging is presented as a powerful method to acquire quantitative well qualitative information on low-dimensional materials. The is, however, not widely used due limitations of the scanning instruments. Here we present hyperspectral system based Bragg tunable filtering that capable global with significantly reduced acquisition time and improved sensitivity compared confocal microscopes. operation principles instrument are presented, performance benchmarked using calibrated carbon nanotube sample. Examples various applications shown illustrate abilities technique characterize samples deposited oxidized silicon substrates, including graphene stacks prepared by chemical-vapor deposition, exfoliated MoS2, nanotubes filled dye molecules. wealth available through this opens many new ways probe properties complex Copyright © 2017 John Wiley & Sons, Ltd.