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Dive into the research topics where Elisabetta A. Matsumoto is active.

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Featured researches published by Elisabetta A. Matsumoto.


Nature Materials | 2016

Biomimetic 4D printing

A. Sydney Gladman; Elisabetta A. Matsumoto; Ralph G. Nuzzo; L. Mahadevan; Jennifer A. Lewis

Shape-morphing systems can be found in many areas, including smart textiles, autonomous robotics, biomedical devices, drug delivery and tissue engineering. The natural analogues of such systems are exemplified by nastic plant motions, where a variety of organs such as tendrils, bracts, leaves and flowers respond to environmental stimuli (such as humidity, light or touch) by varying internal turgor, which leads to dynamic conformations governed by the tissue composition and microstructural anisotropy of cell walls. Inspired by these botanical systems, we printed composite hydrogel architectures that are encoded with localized, anisotropic swelling behaviour controlled by the alignment of cellulose fibrils along prescribed four-dimensional printing pathways. When combined with a minimal theoretical framework that allows us to solve the inverse problem of designing the alignment patterns for prescribed target shapes, we can programmably fabricate plant-inspired architectures that change shape on immersion in water, yielding complex three-dimensional morphologies.


Reviews of Modern Physics | 2012

Colloquium: Disclination loops, point defects, and all that in nematic liquid crystals

Gareth P. Alexander; Bryan Gin-ge Chen; Elisabetta A. Matsumoto; Randall D. Kamien

The homotopy theory of topological defects is a powerful tool for organizing and unifying many ideas across a broad range of physical systems. Recently, experimental progress has been made in controlling and measuring colloidal inclusions in liquid crystalline phases. The topological structure of these systems is quite rich but, at the same time, subtle. Motivated by experiment and the power of topological reasoning, we review and expound upon the classification of defects in uniaxial nematic liquid crystals. Particular attention is paid to the ambiguities that arise in these systems, which have no counterpart in the much-storied XY model or the Heisenberg ferromagnet.


Physical Review Letters | 2009

Helical Nanofilaments and the High Chirality Limit of Smectics A

Elisabetta A. Matsumoto; Gareth P. Alexander; Randall D. Kamien

Liquid crystalline systems exhibiting both macroscopic chirality and smectic order experience frustration resulting in mesophases possessing complex three-dimensional order. In the twist-grain-boundary phase, defect lattices mediate the propagation of twist throughout the system. We propose a new chiral smectic structure composed of a lattice of chiral bundles as a model of the helical nanofilament (B4) phase of bent-core smectics.


Interface Focus | 2012

Smectic pores and defect cores

Elisabetta A. Matsumoto; Randall D. Kamien; Christian D. Santangelo

Riemanns minimal surfaces, a one-parameter family of minimal surfaces, describe a bicontinuous lamellar system with pores connecting alternating layers. We demonstrate explicitly that Riemanns minimal surfaces are composed of a nonlinear sum of two oppositely handed helicoids.


Proceedings of the National Academy of Sciences of the United States of America | 2015

Wrinkles and splay conspire to give positive disclinations negative curvature

Elisabetta A. Matsumoto; Daniel A. Vega; Aldo D. Pezzutti; Nicolás A. García; Paul M. Chaikin; Richard A. Register

Significance Diblock copolymers, polymers made by covalently bonding two otherwise immiscible polymers together, are prized for their robust ability to self-assemble into highly ordered geometric structures. Likewise, there has been recent interest in the ability to control the global geometry of a surface, merely by modifying its local microstructure. Here, we take advantage of the defect structure arising from a slow annealing of a thin film of cylinder-forming diblock copolymers as a means of guiding the geometry of an emergent three-dimensional structure. Recently, there has been renewed interest in the coupling between geometry and topological defects in crystalline and striped systems. Standard lore dictates that positive disclinations are associated with positive Gaussian curvature, whereas negative disclinations give rise to negative curvature. Here, we present a diblock copolymer system exhibiting a striped columnar phase that preferentially forms wrinkles perpendicular to the underlying stripes. In free-standing films this wrinkling behavior induces negative Gaussian curvature to form in the vicinity of positive disclinations.


Interface Focus | 2017

Straight round the twist: frustration and chirality in smectics-A

Elisabetta A. Matsumoto; Randall D. Kamien; Gareth P. Alexander

Frustration is a powerful mechanism in condensed matter systems, driving both order and complexity. In smectics, the frustration between macroscopic chirality and equally spaced layers generates textures characterized by a proliferation of defects. In this article, we study several different ground states of the chiral Landau–de Gennes free energy for a smectic liquid crystal. The standard theory finds the twist grain boundary (TGB) phase to be the ground state for chiral type II smectics. However, for very highly chiral systems, the hierarchical helical nanofilament phase can form and is stable over the TGB.


Soft Matter | 2012

Patterns on a roll: a method of continuous feed nanoprinting

Elisabetta A. Matsumoto; Randall D. Kamien

Exploiting elastic instability in thin films has proven to be a robust method for creating complex patterns and structures across a wide range of lengthscales. Even the simplest of systems, an elastic membrane with a lattice of pores, under mechanical strain, generates complex patterns featuring long-range orientational order. When we promote this system to a curved surface, in particular, a cylindrical membrane, a novel set of features, patterns and broken symmetries appears. The newfound periodicity of the cylinder allows for a novel continuous method for nanoprinting.


Soft Matter | 2018

Mechanics of biomimetic 4D printed structures

Wim M. van Rees; Elisabetta A. Matsumoto; A. Sydney Gladman; Jennifer A. Lewis; L. Mahadevan

Recent progress in additive manufacturing and materials engineering has led to a surge of interest in shape-changing plate and shell-like structures. Such structures are typically printed in a planar configuration and, when exposed to an ambient stimulus such as heat or humidity, swell into a desired three-dimensional geometry. Viewed through the lens of differential geometry and elasticity, the application of the physical stimulus can be understood as a local change in the metric of a two dimensional surface embedded in three dimensions. To relieve the resulting elastic frustration, the structure will generally bend and buckle out-of-plane. Here, we propose a numerical approach to convert the discrete geometry of filament bilayers, associated with print paths of inks with given material properties, into continuous plates with inhomogeneous growth patterns and thicknesses. When subject to prescribed growth anisotropies, we can then follow the evolution of the shapes into their final form. We show that our results provide a good correspondence between experiments and simulations, and lead to a framework for the prediction and design of shape-changing structures.


Molecular Physics | 2018

Self-assembly of twisted, multi-sheet aggregates

Alireza Dastan; Elisabetta A. Matsumoto; William J. Frith; Douglas J. Cleaver

ABSTRACT Hierarchical self-assembly underpins much of the diversity of form and function seen in soft systems, yet the pathways by which they achieve their final form are not always straightforward – intermediate steps, kinetic effects and finite sizes of aggregates all influence the self-assembly pathways of these systems. In this paper, we use molecular dynamics simulations of binary mixtures of spheres and ellipsoidal discs to investigate the self-assembly of anisotropic aggregates with internal structures. Through this, the full aggregation pathways of spontaneously chiral, multi-bilayer and multi-layer assemblies have been tracked and characterised via a semi-qualitative analysis. This includes the unambiguous identification of first-, second- and third-generation hierarchical assemblies within a single simulation. Given the significant challenge of tracking full aggregation pathways in experimental systems, our findings strongly support the notion that molecular simulation has much to contribute to improving our understanding of hierarchical self-assembling systems. GRAPHICAL ABSTRACT


Nano Letters | 2008

One-Step Nanoscale Assembly of Complex Structures via Harnessing of an Elastic Instability

Ying Zhang; Elisabetta A. Matsumoto; Anna Peter; Pei-Chun Lin; Randall D. Kamien; Shu Yang

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Randall D. Kamien

University of Pennsylvania

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Bryan Gin-ge Chen

University of Pennsylvania

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Shu Yang

University of Pennsylvania

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Ying Zhang

University of Pennsylvania

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Christian D. Santangelo

University of Massachusetts Amherst

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Pei-Chun Lin

National Taiwan University

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Dinesh Chandra

University of Pennsylvania

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