@article{d877a0b2e4e04226bf481c850baad01a,
title = "Structural Color and Iridescence in Transparent Sheared Cellulosic Films",
abstract = "Shear transparent cellulose free-standing thin films can develop iridescence similar to that found in petals of the tulip “Queen of the Night.” The iridescence of the film arises from the modulation of the surface into bands periodically spread perpendicular to the shear direction. Small amounts of nanocrystalline cellulose (NCC) rods in the precursor liquid-crystalline solutions do not disturb the optical properties of the solutions but enhance the mechanical char- acteristics of the films and affects their iridescence. Smaller bands periodicity, not affected by the NCC rods, slightly devi- ated from the shear direction is also observed. NCCs are crucial to tune and understand the film{\textquoteright}s surface features formation. Our findings could lead to new materials for application in soft reflective screens and devices.",
keywords = "cellulose free-standing films, iridescence, nanocrystalline cellulose rods, structural colors, liquid-crystalline polymer solutions, cellulose free-standing films, iridescence , liquid-crystalline polymer solutions , nanocrystalline cellulose rods , structural colors",
author = "Fernandes, {Susete Nogueira} and Yong Geng and Silvia Vignolini and Glover, {Beverley J.} and Trindade, {Ana C.} and Canejo, {Jo{\~a}o Paulo Heitor Godinho} and Almeida, {Pedro L.} and Pedro Brogueira and Godinho, {Maria Helena Figueiredo}",
note = "Sem pdf conforme despacho. This research was supported by the Portuguese Science and Technology Foundation (FCT) through contracts PTDC/CTM/099595/2008/2009, PTDC/CTM/101776/2008, PTDC/FIS/110132/2009, and PEst-C/CTM/LA0025/2011 (Strategic Project - LA 25 - 2011-2012). S.N.F., Y.G., and A. C. T. acknowledge FCT for grants SFRH/BPD/78430/2011, SFRH/BD/63574/2009 and SFRH/BDP/65133/2009, respectively. We thank Professor D. G. Gray and Dr. E. Kloser for the kindly supply of nanocrystalline cellulose rods and E. Moyroud and U. Steiner for useful discussion.",
year = "2013",
doi = "10.1002/macp.201200351",
language = "English",
volume = "214",
pages = "25--32",
journal = "Macromolecular Chemistry And Physics",
issn = "1022-1352",
publisher = "John Wiley & Sons, Ltd.",
number = "1",
}