Sarah Choudhury, working as a SWEP-funded summer student at the lab created these images using electron beam lithography and deposition of a thin metal film.
On the engineering facebook page, Sarah writes:
This summer I worked as a SWEP student for NanoFabrication Kingston at Innovation Park. I've been working with some really awesome technology but one of the best things I've done is to make super-tiny logos and designs with the electron beam lithography tool we have here. I made the Sci '21 Year Crest, the ¾ÅÐãÖ±²¥ logo, and the NanoFabrication Kingston logo about one quarter the width of a human hair. The ¾ÅÐãÖ±²¥ logo is 67 microns wide, the Sci '21 Year Crest is 40 microns, and the NFK logo is 25 microns. The smallest features within these designs are 18 nanometers across: the cross-hatch in the flower of the ¾ÅÐãÖ±²¥ logo, for example.