Post-fabrication tuning of origami-inspired mechanical metamaterials based on Tachi-Miura Polyhedron
Materials & Design, 2023 We investigate the reconfigurability and tunability of the tessellation of Tachi-Miura Polyhedron (TMP), an origami-based cellular structure composed of bellows-like unit cells.
Koshiro Yamaguchi +6 more
doaj +1 more source
Highly Strained Compliant Optical Metamaterials with Large Frequency Tunability [PDF]
, 2010 Metamaterial designs are typically limited to operation over a narrow bandwidth dictated by the resonant line width. Here we report a compliant metamaterial with tunability of Δλ ~ 400 nm, greater than the resonant line width at optical frequencies ...
Atwater, Harry A. +4 more
core +2 more sources
First evidence of non-locality in real band-gap metamaterials: determining parameters in the relaxed micromorphic model [PDF]
, 2016 In this paper we propose the first estimate of some elastic parameters of the relaxed micromorphic model on the basis of real experiments of transmission of longitudinal plane waves across an interface separating a classical Cauchy material (steel plate)
Barbagallo, Gabriele +4 more
core +2 more sources
Flexible mechanical metamaterials [PDF]
Nature Reviews Materials, 2017 Mechanical metamaterials exhibit properties and functionalities that cannot be realized in conventional materials. Originally, the field focused on achieving unusual (zero or negative) values for familiar mechanical parameters, such as density, Poisson's ratio or compressibility, but more recently, new classes of metamaterials — including shape ...
Bertoldi, K. +3 more
openaire +3 more sources
A novel mechanical metamaterial with simultaneous stretching- and compression-expanding property
Materials & Design, 2021 Poisson’s ratio is an important property defining the relationship between lateral and longitudinal deformations. While most conventional materials have positive Poisson’s ratios, auxetic metamaterials exhibit negative Poisson’s ratios and will contract ...
Wenjun Wu, Pai Liu, Zhan Kang
doaj +1 more source
Oligomodal metamaterials with multifunctional mechanics [PDF]
Proceedings of the National Academy of Sciences, 2021 Significance Mechanical metamaterials are man-made materials with extraordinary properties that come from their geometrical structure rather than their chemical composition. For instance, they can be engineered to be extremely light and stiff; to shrink sideways when compressed, instead of expanding; or to exhibit programmable shape changes ...
Bossart, Aleksi +3 more
openaire +4 more sources
A 3D Printed Modular Soft Gripper Integrated With Metamaterials for Conformal Grasping
Frontiers in Robotics and AI, 2022 A single universal robotic gripper with the capacity to fulfill a wide variety of gripping and grasping tasks has always been desirable. A three-dimensional (3D) printed modular soft gripper with highly conformal soft fingers that are composed of ...
Charbel Tawk +5 more
doaj +1 more source
Double defects-induced elastic wave coupling and energy localization in a phononic crystal
Nano Convergence, 2021 This study aims to investigate elastic wave localization that leverages defect band splitting in a phononic crystal with double defects through in-depth analysis of comparison of numerical and experimental results.
Soo-Ho Jo +5 more
doaj +1 more source
Polarization-maintaining reflection-mode THz time-domain spectroscopy of a polyimide based ultra-thin narrow-band metamaterial absorber [PDF]
, 2018 This paper reports the design, the microfabrication and the experimental characterization of an ultra-thin narrow-band metamaterial absorber at terahertz frequencies.
Astorino, Maria Denise +8 more
core +2 more sources
Conformal elasticity of mechanism-based metamaterials [PDF]
Nature Communications, 2022 AbstractDeformations of conventional solids are described via elasticity, a classical field theory whose form is constrained by translational and rotational symmetries. However, flexible metamaterials often contain an additional approximate symmetry due to the presence of a designer soft strain pathway.
Michael Czajkowski +3 more
openaire +8 more sources