@article{Pokroy2009,

title = {Self-Organization of a Mesoscale Bristle into Ordered, Hierarchical Helical Assemblies},

author = {Boaz Pokroy and Sung Hoon Kang and L. Mahadevan and Joanna Aizenberg

},

url = {http://www.sciencemag.org/content/323/5911/237.short},

year  = {2009},

date = {2009-01-09},

journal = {Science},

volume = {323},

pages = {237-240},

abstract = {Mesoscale hierarchical helical structures with diverse functions are abundant in nature. Here we show how spontaneous helicity can be induced in a synthetic polymeric nanobristle assembling in an evaporating liquid. We use a simple theoretical model to characterize the geometry, stiffness, and surface properties of the pillars that favor the adhesive self-organization of bundles with pillars wound around each other. The process can be controlled to yield highly ordered helical clusters with a unique structural hierarchy that arises from the sequential assembly of self-similar coiled building blocks over multiple length scales. We demonstrate their function in the context of self-assembly into previously unseen structures with uniform, periodic patterns and controlled handedness and as an efficient particle-trapping and adhesive system. },

note = {Highlighted in the issue, and various media including New York Times, NPR, Discovery, AAAS EurekAlert, C&EN, Technology Review, IEEE Spectrum, Science Daily, and New Scientist. },

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pokroy2009,

title = {Self-Organization of a Mesoscale Bristle into Ordered, Hierarchical Helical Assemblies},

author = {Boaz Pokroy and Sung Hoon Kang and L. Mahadevan and Joanna Aizenberg

},

url = {http://www.sciencemag.org/content/323/5911/237.short},

year  = {2009},

date = {2009-01-09},

journal = {Science},

volume = {323},

pages = {237-240},

abstract = {Mesoscale hierarchical helical structures with diverse functions are abundant in nature. Here we show how spontaneous helicity can be induced in a synthetic polymeric nanobristle assembling in an evaporating liquid. We use a simple theoretical model to characterize the geometry, stiffness, and surface properties of the pillars that favor the adhesive self-organization of bundles with pillars wound around each other. The process can be controlled to yield highly ordered helical clusters with a unique structural hierarchy that arises from the sequential assembly of self-similar coiled building blocks over multiple length scales. We demonstrate their function in the context of self-assembly into previously unseen structures with uniform, periodic patterns and controlled handedness and as an efficient particle-trapping and adhesive system. },

note = {Highlighted in the issue, and various media including New York Times, NPR, Discovery, AAAS EurekAlert, C&EN, Technology Review, IEEE Spectrum, Science Daily, and New Scientist. },

keywords = {bio-inspired science and engineering, Helical, Hierarchical, Mesoscale, Nanopillar, Order, Self-Organization},

pubstate = {published},

tppubtype = {article}

}