Can Nanotubes Make a Lens Array?
Ranjith Rajasekharan, Haider Butt, Qing Dai, Timothy D Wilkinson, Gehan AJ Amaratunga
ADVANCED MATERIALS | WILEY-V C H VERLAG GMBH | Published : 2012
Reflective binary Fresnel lenses fabricated so far all suffer from reflections from the opaque zones and hence degradation in focusing and lensing properties. Here a solution is found to this problem by developing a carbon nanotube Fresnel lens, where the darkest man-made material ever, i.e., low-density vertically aligned carbon nanotube arrays, are exploited. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Awarded by Engineering and Physical Sciences Research Council
The authors thank Samsung Electronics Co., Ltd. (SAIT) for funding this work. This work was also partly funded under the Nokia-Cambridge Strategic Partnership in Nanoscience and Nanotechnology (Energy Programme). Thanks also to Stephen Morris, Joel Carpenter, Flynn Castles, Philip Hands, and Damian Gardner for fruitful discussions.