Circular dichroism of a nanohelix

baptiste AuguiƩ -- r format(Sys.time(), "%d %B, %Y")

knitr::read_demo("helix_cd", package="cda")
knitr::read_chunk("load.R")


A helix of more than 4 spheres is chiral, and displays optical activity. In contrast, even a small departure from sphericity allows clusters of only 2 ellipsoids to be (strongly) optically active. We compare both situations in this demo.

Cluster definition


Comparing spheres and ellipsoids




baptiste/cda documentation built on May 6, 2022, 5:52 a.m.