Publications
1.
Pokroy, Boaz; Kang, Sung Hoon; Mahadevan, L.; Aizenberg, Joanna
Self-Organization of a Mesoscale Bristle into Ordered, Hierarchical Helical Assemblies Journal Article
In: Science, vol. 323, pp. 237-240, 2009, (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. ).
@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}
}
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: Send e-mail to Prof. Kang at [email protected] if you need a pdf file of the papers below.
2009
Pokroy, Boaz; Kang, Sung Hoon; Mahadevan, L.; Aizenberg, Joanna
Self-Organization of a Mesoscale Bristle into Ordered, Hierarchical Helical Assemblies Journal Article
In: Science, vol. 323, pp. 237-240, 2009, (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. ).
Abstract | Links | BibTeX | Tags: bio-inspired science and engineering, Helical, Hierarchical, Mesoscale, Nanopillar, Order, Self-Organization
@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}
}
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.