Extended Data Fig. 1: Chiral morphology and characterization of 432 helicoids I and II.
From: Amino-acid- and peptide-directed synthesis of chiral plasmonic gold nanoparticles
a, Large-area SEM image of 432 helicoid I. l-Cys was used as an additive. Inset, extinction spectra of 432 helicoid I synthesized using l-Cys and d-Cys. b, Large-area SEM image of 432 helicoid II, synthesized with l-GSH.
