Top:  (left) Original gray scale image. (right) Each gray scale value is mapped to a grating amplitude via exposure time. Bottom: (right) Resulting dot matrix array of surface gratings written on supramolecular film.  (middle) Magnified optical microscope image showing dot matrix structure. (left) AFM image of individual grating dot.   (More images here)

(Film fabrication, optical setup, AFM studies, and images by Daniel Stolz, with assistance from Luke Kurlandski, Jonas Strobelt , Max Leven, and Robert Conwell.  All work performed in McGee lab at TCNJ)