This article highlights recent advances in linear and nonlinear spectral nano-imaging. The described developments are motivated by the need to characterize molecular and material systems non-invasively with nanometer spatial and femtosecond temporal resolution. Indeed, the ability to image and chemically characterize heterogeneous interfaces with joint nano-femto resolution is prerequisite to advancing our fundamental understanding of processes as diverse as heterogenous catalysis, microbial communication, and energy flow in pristine/defect containing low-dimensional quantum materials, to name a few. We describe pioneering work and recent demonstrations of (non)linear optical nano-imaging and nano-spectroscopy, with emphasis on high spatial resolution measurements conducted under ambient laboratory conditions.
Published: January 26, 2023
Wang C., and P.Z. El-Khoury. 2022.Multimodal (Non)Linear Optical Nanoimaging and Nanospectroscopy.The Journal of Physical Chemistry Letters 13, no. 31:7350-7354.PNNL-SA-174591.doi:10.1021/acs.jpclett.2c01993