3D metamaterials

Abstract

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An injectable meta-biomaterial

“…We present the design, synthesis, and testing of an in-vivo 3D shape tissue engineering material baed on meta-material physics. 23,24 Numerical simulation allowed us to translate the unmet clinical need of a shapeable soft tissue implant 8,11,16 into a set of engineer-able mechanical and geometric parameters. With the elastic, porous, and injectable (EPI) biomaterial, we achieved desired shape-stable, softening, and yielding behaviors, along with substantial porosity and a tissue-matching mechanical response.…”

“…Here, we reconcile injectability, shapeability, and long-term volume stability by a radically novel approach: an injectable meta-material 23 . Mechanical meta-materials obtain unusual properties by their mere geometry 23,24 .…”

“…Here, we reconcile injectability, shapeability, and long-term volume stability by a radically novel approach: an injectable meta-material 23 . Mechanical meta-materials obtain unusual properties by their mere geometry 23,24 . We hypothesize here that physical interlocking of geometrically designed particles can restore meta-material properties even after transient liquefaction for injection [25][26][27] .…”

Cloaking In-Plane Elastic Waves with Swiss Rolls

“…There are different routes to elastic cloaking which have been listed in [4,5], and we shall focus here on one of these based on the concept of unconventional effective dynamic properties enabling both minor symmetry breaking in the rank-4 elasticity tensor as well as non vanishing rank-3 and 2 tensors in the Willis model [6] near resonant frequencies of certain types of stress-free inclusions shaped as swiss-rolls. Swiss-rolls were introduced in the context of electromagnetic metamaterials for artificial chirality [7], and such magneto-optic coupling recently found a counterpart in elasticity [8][9][10][11].…”

All-optical switching of a dye-doped liquid crystal plasmonic metasurface

“…Since the prediction of negative refractive indices [4] and their experimental realization [5], many fundamental studies have been performed and possible applications have been demonstrated, which include perfect lenses [6], hyperlenses [7], optical cloaks [8], etc. The fabrication of bulk metamaterials is challenging [9]. However, metasurfacestwodimensional arrays of sub-wavelength structuresare easier to fabricate and in many cases sufficient to provide the function of a frequency-selective filter, a polarizer, a lens or a similar optical element by merely a very thin structured layer [10 -38].…”