Fig. 2: Experimental characterization of chiroptical detection on chiral nanoassemblies synthesized by chiral molecules.
From: Multidimensional helical dichroism from a chiral molecular nanoassembly
a Experimental setup of HD measurements on the synthesized chiral nanoassemblies. Linearly polarized vortex beams modulated by an SLM are focused on single chiral nanoassemblies for chiroptical detection. The chiral nanoassemblies are synthesized by self-assembly of chiral molecules from the molecule-scale to the micro-scale. BS: beam splitter. b Schematic diagram of the chiroptical HD measurements on the chiral nanoassemblies by chiral light–matter interactions. c The chiroptical signal can be measured on the difference between reflection spectra by vortex beams with opposite topological charges of \(\pm {\ell}\). d Enlarged SEM images of chiral nanoassemblies synthesized by l-cystine (left panel) and d-cystine (right panel). e SEM image of the randomly distributed chiral nanoassemblies on the substrate.
