Biomimetic self-assembly of a functional asymmetrical electronic device

Boncheva, Mila; Gracias, David H.; Jacobs, Heiko O.; Whitesides, George M.

doi:10.1073/pnas.032667599

Cited by 86 publications

(65 citation statements)

References 23 publications

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“…Self-assembly of the prisms into a circular pentameric structure yielded a ring oscillator. Replacement of the inverters by flip-flops and alteration of the orientation of alternate prisms generated a structure that folded into a linear arrangement and functioned as a shift register [148].…”

Section: -D Structuresmentioning

confidence: 99%

Surface tension-powered self-assembly of microstructures - The state-of-the-art

Syms¹,

Yeatman²,

Bright

et al. 2003

J. Microelectromech. Syst.

320

238

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Abstract-Because of the low dimensional power of its force scaling law, surface tension is appropriate for carrying out reshaping and assembly in the microstructure size domain. This paper reviews work on surface tension powered self-assembly of microstructures. The existing theoretical approaches for rotational assembly are unified. The demonstrated fabrication processes are compared. Mechanisms for accurately determining the assembled shape are discussed, and the limits on accuracy and structural distortion are considered. Applications in optics, electronics and mechanics are described. More complex operations (including the combination of self-assembly and self-organization) are also reviewed.[926]Index Terms-Capillary force, microelectromechanical systems (MEMS), microsystems, microoptoelectromechanical systems (MOEMS), self-assembly, surface tension.

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Section: -D Structuresmentioning

confidence: 99%

Surface tension-powered self-assembly of microstructures - The state-of-the-art

Syms¹,

Yeatman²,

Bright

et al. 2003

J. Microelectromech. Syst.

320

238

View full text Add to dashboard Cite

show abstract

“…Due to the relative simplicity of fabrication and surface modification, the interactions between these building blocks can be readily tailored to generate complex structures, functional devices, and dynamic systems. [11][12][13] Over the past several years, a diverse collection of nanoscale building blocks with anisotropic shapes has also emerged, as well as, schemes to add directionality to their interactions through selective functionalization. [14,15] While the synthesis of such anisotropic nanoparticles has been reported by a number of groups, only a handful of them have been explored as building blocks for self-assembly.…”

mentioning

confidence: 99%

Controlling the Assembly of Silver Nanocubes through Selective Functionalization of Their Faces

2008

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Silver nanocubes are self‐assembled into unique structures via hydrophobic interactions. The structures could be predesigned by selectively functionalizing the faces of each nanocube with hydrophobic and hydrophilic self‐assembled monolayers (SAMs). The cubic lattice shown in this SEM image was formed at an air‐water interface from Ag nanocubes whose entire surface had been derivatized with a hydrophobic SAM.

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“…In order to translate these self-assembly processes from the laboratory to a manufacturing setting, there is a need to uncover rules that govern yield and defect tolerance. Several experiments, in combination with a growing body of theory, point the way to a future of algorithmic design of biomimetic devices and materials of increasing complexity (10)(11)(12)(13)(14)(15)(16).…”

mentioning

confidence: 99%

Algorithmic design of self-folding polyhedra

Pandey

Ewing

Kunas

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

105

129

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Self-assembly has emerged as a paradigm for highly parallel fabrication of complex three-dimensional structures. However, there are few principles that guide a priori design, yield, and defect tolerance of self-assembling structures. We examine with experiment and theory the geometric principles that underlie self-folding of submillimeter-scale higher polyhedra from two-dimensional nets. In particular, we computationally search for nets within a large set of possibilities and then test these nets experimentally. Our main findings are that (i) compactness is a simple and effective design principle for maximizing the yield of self-folding polyhedra; and (ii) shortest paths from 2D nets to 3D polyhedra in the configuration space are important for rationalizing experimentally observed folding pathways. Our work provides a model problem amenable to experimental and theoretical analysis of design principles and pathways in self-assembly.microfabrication | origami | programmable matter | viral capsid N ature uses hierarchical assembly to construct essential biomolecules such as proteins and nucleic acids and biological containers such as viral capsids. Our increased understanding of biological systems has inspired several synthetic methods of selfassembly (1). Conversely, part of the promise of synthetic selfassembly has been that it may yield essential insights into the formation of biological structure. In order to realize these ambitions, it is necessary to develop model experimental systems and theoretical analyses that make precise the analogies between natural and synthetic self-assembly. Abstraction of the essentials of complex biochemical processes is an important step in this process, and perhaps the simplest abstraction is of the geometric form of a biological structure. Two such abstractions are the CasparKlug (CK) theory of viral structure (2) and hydrophobic-polar (HP) lattice models for protein folding (3). The consequences of geometry alone can be striking in such models: The CK theory provides a valuable classification of virus shapes by T number, and much of the detailed architecture of compact proteins such as helices, and antiparallel and parallel sheets emerges from purely steric restrictions on long chain molecules (4). Building such geometric models is, of course, part of a long tradition in biochemistry. What is now striking is the ability to build basic geometric structures such as polyhedra in laboratory self-assembly experiments using molecules such as DNA (5-8) or 100-nm to 1-mm scale lithographically interconnected panels (9). In addition to the intellectual value of such experiments, many of the self-assembled structures realized cannot be fabricated by alternate methods, and they are of technological relevance in optics, electronics, and medicine. In order to translate these self-assembly processes from the laboratory to a manufacturing setting, there is a need to uncover rules that govern yield and defect tolerance. Several experiments, in combination with a growing body of theory, point ...

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Biomimetic self-assembly of a functional asymmetrical electronic device

Cited by 86 publications

References 23 publications

Surface tension-powered self-assembly of microstructures - The state-of-the-art

Surface tension-powered self-assembly of microstructures - The state-of-the-art

Controlling the Assembly of Silver Nanocubes through Selective Functionalization of Their Faces

Algorithmic design of self-folding polyhedra

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