@article { ISI:000474801000012,
	title = {Pressure-Responsive Hierarchical Chiral Photonic Aerogels},
	journal = {ADVANCED MATERIALS},
	volume = {31},
	number = {21},
	year = {2019},
	month = {MAY},
	pages = {1808186},
	publisher = {WILEY-V C H VERLAG GMBH},
	type = {Article},
	address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
	abstract = {Pressure-responsive chiral photonic aerogels are fabricated by combining liquid crystal self-assembly and ice-templating processes. The aerogels have a hierarchical structure in which the primary 2D chiral nematic structured walls of cellulose nanocrystals form ribbons that support a secondary 3D cellular network. Owing to the flexibility of the aerogels in solvent, the 3D structure of the aerogel can easily be transformed to a 2D structure by pressure-induced rearrangement. The aerogels vary from white in color, which arises from light scattering, to a reflective photonic crystal displaying bright iridescent colors that depend on the immersed solvent. A solvent-sensitive ink that shows quick color response to different solvents is designed using the pressure-responsive photonic aerogel. This material demonstrates a new response mechanism for the design of smart and mechanoresponsive photonic materials.},
	keywords = {chiral nematic liquid crystals, hierarchical chiral cellulose aerogels, ice templating, mechanoresponsive photonic crystal aerogels, solvent-sensitive inks},
	issn = {0935-9648},
	doi = {10.1002/adma.201808186},
	author = {Cao, Yuanyuan and Lewis, Lev and Hamad, Wadood Y. and MacLachlan, Mark J.}
}
