Tootfinder

This https://arxiv.org/abs/2504.01195 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Towards Signed Distance Function based Metamaterial Design: Neural Operator Transformer for Forward Prediction and Diffusion Model for Inverse Design
The inverse design of metamaterial architectures presents a significant challenge, particularly for nonlinear mechanical properties involving large deformations, buckling, contact, and plasticity. Traditional methods, such as gradient-based optimization, and recent generative deep-learning approaches often rely on binary pixel-based representations, which introduce jagged edges that hinder finite element (FE) simulations and 3D printing. To overcome these challenges, we propose an inverse desig…

Surface plasmons in metamaterial cavities: Scattering by obstacles with negative wave speed
Yan-Long Fang, Jeffrey Galkowski
https://arxiv.org/abs/2505.22253

Surface plasmons in metamaterial cavities: Scattering by obstacles with negative wave speed
We study scattering by metamaterials with negative indices of refraction, which are known to support \emph{surface plasmons} -- long-lived states that are highly localized at the boundary of the cavity. This type of states has found uses in a variety of modern technologies. In this article, we study surface plasmons in the setting of non-trapping cavities; i.e. when all billiard trajectories outside the cavity escape to infinity. We characterize the indices of refraction which support surface p…

Metamaterial Bi-stable Vibration Absorbers for Railway Tracks: Experimental Study of Flexural Wave Control
Ali Jafari, Aref Afsharfard
https://arxiv.org/abs/2506.18801

Metamaterial Bi-stable Vibration Absorbers for Railway Tracks: Experimental Study of Flexural Wave Control
Subway rail vibrations result in serious problems in urban railway systems as they cause structural damage, as well as increase noise pollution and discomfort of passengers. This paper aims to present an experimental study on the application of Dynamic Vibration Absorbers (DVAs) to reduce unwanted rail vibrations. The effectiveness of various DVA configurations was evaluated using Experimental Modal Analysis (EMA) and stochastic vibration analysis on a UIC60/60E1 rail. The results of the study …

Pattern Formation in Robotic Mechanical Metamaterial
Vinod Ramakrishnan, Michael J. Frazier
https://arxiv.org/abs/2506.17853 https://…

Pattern Formation in Robotic Mechanical Metamaterial
Spatio-temporal patterns emerging from an initial quiescent, uniform state is a phenomenon observed in many dynamical systems sustained far from thermodynamic equilibrium, the practical application of which has only recently begun to be explored. As the underlying dynamics are typically complex, pattern formation is often theoretically analyzed and understood via phenomenological models, which effectively represent the causal mechanisms, but obscure the link between the small-scale interactions…

Tunable Epsilon Near Zero Metamaterial with Rotating Obround-Shaped Meta-Atoms
Rustam Balafendiev, Gagandeep Kaur, Jim A. Enriquez, Gaganpreet Singh, Alexander J. Millar, Jon E. Gudmundsson, Pavel Belov
https://arxiv.org/abs/2506.04428

Tunable Epsilon Near Zero Metamaterial with Rotating Obround-Shaped Meta-Atoms
A new design of a microwave-range ENZ metamaterial consisting of rods with an obround cross-section is proposed. The plasma frequency of the metamaterial can be tuned by rotating the constituent meta-atoms. Tunability of the plasma frequency by 26% is demonstrated both experimentally and numerically. The observed tuning range is dramatically higher than in the one observed in natural materials at optical range.

Ultrafast interband transitions in nanoporous gold metamaterial
Tlek Tapani, Jonas M. Pettersson, Nils Henriksson, Erik Z\"all, Nils V. Hauff, Lakshmi Das, Gianluca Balestra, Massimo Cuscun\`a, Aitor De Andr\'es, Tommaso Giovannini, Denis Garoli, Nicol\`o Maccaferri
https://arxiv.org/abs/2506.08536

Ultrafast interband transitions in nanoporous gold metamaterial
Nanoporous metals have emerged as promising functional architectures due to their tunable optical and electronic properties, high surface areas, and versatile use in real-life applications such as sensing, catalysis, and biomedicine. While the optical and morphological properties of nanoporous metals have been extensively studied, their electronic properties at ultrafast timescales remain largely unexplored. Here, we study the transient response of a nanoporous gold metamaterial and compare it …

Replaced article(s) found for physics.app-ph. https://arxiv.org/list/physics.app-ph/new
[1/1]:
- Effective interface forces to model boundary effects in a finite-size metamaterial through the re...
Plastiras Demetriou, Jendrik Voss, Angela Madeo

Reconfigurable Ultrafast Thermal Metamaterial Pixel Arrays by Dual-Gate Graphene Transistors
Yibai Zhong, Xiu Liu, Zexiao Wang, Tianyi Huang, Jingyi Zou, Sen Lin, Xiao Luo, Zhuo Li, Rui Cheng, Xu Zhang, Sheng Shen
https://arxiv.org/abs/2506.04372

Reconfigurable Ultrafast Thermal Metamaterial Pixel Arrays by Dual-Gate Graphene Transistors
Thermal signatures represent ubiquitous infrared appearances of objects, carrying their unique spectral fingerprints. Despite extensive efforts to decipher and manipulate thermal-infrared signals, the ability to fully control them across spatial, temporal and spectral domains remains a significant challenge due to the slow speed, diffuse and broadband emitting nature of thermal emission in most materials. Here, we demonstrate a reconfigurable ultrafast thermal metamaterial pixel array that inte…

Replaced article(s) found for quant-ph. https://arxiv.org/list/quant-ph/new
[1/2]:
- Tunable negative permeability in a quantum plasmonic metamaterial
K. R. McEnery, M. S. Tame, S. A. Maier, M. S. Kim

Ultra-lightweight multi-functional gyroid-based metamaterial for simultaneous sound insulation, vibration suppression, and impact mitigation in all directions
Evan Kluge, Osama R. Bilal
https://arxiv.org/abs/2506.09321

Ultra-lightweight multi-functional gyroid-based metamaterial for simultaneous sound insulation, vibration suppression, and impact mitigation in all directions
Multi-functional materials are increasingly essential in many applications due to their ability to serve multiple purposes, simultaneously. Metamaterials can offer tailored functionality based on carefully designed tessellating basic building blocks, or unit cells, in space. These unit cells are most commonly designed for a single objective, for example, to mitigate an impact, insulate sound, or dampen vibrations. However, a metamaterial that can mitigate impact, attenuate elastic vibrations, i…

Toward a Robust and Generalizable Metamaterial Foundation Model
Namjung Kim, Dongseok Lee, Jongbin Yu, Sung Woong Cho, Dosung Lee, Yesol Park, Youngjoon Hong
https://arxiv.org/abs/2507.02436

Toward a Robust and Generalizable Metamaterial Foundation Model
Advances in material functionalities drive innovations across various fields, where metamaterials-defined by structure rather than composition-are leading the way. Despite the rise of artificial intelligence (AI)-driven design strategies, their impact is limited by task-specific retraining, poor out-of-distribution(OOD) generalization, and the need for separate models for forward and inverse design. To address these limitations, we introduce the Metamaterial Foundation Model (MetaFO), a Bayesia…

Symmetry-based theory of Dirac fermions on two-dimensional hyperbolic crystals: Coupling to the spin connection
Ana Djordjevi\'c, Marija Dimitrijevi\'c \'Ciri\'c, Vladimir Juri\v{c}i\'c
https://arxiv.org/abs/2507.08276

Symmetry-based theory of Dirac fermions on two-dimensional hyperbolic crystals: Coupling to the spin connection
Discrete fermionic and bosonic models for hyperbolic lattices have attracted significant attention across a range of fields since the experimental realization of hyperbolic lattices in metamaterial platforms, sparking the development of hyperbolic crystallography. However, a fundamental and experimentally consequential aspect remains unaddressed: fermions propagating in curved space inherently couple to the underlying geometry via the spin connection, as required by general covariance - a featu…

Replaced article(s) found for physics.optics. https://arxiv.org/list/physics.optics/new
[1/1]:
- Design and Optimization of a Metamaterial Absorber for Solar Energy Harvesting in the THz Frequen...
Nafisa Anjum, Alok Kumar Paul

Replaced article(s) found for physics.class-ph. https://arxiv.org/list/physics.class-ph/new
[1/1]:
- Metamaterial two-sphere Newton's cradle
Simon A. Pope, Oliver B. Wright

Ultrafast All-optical control of Multiple Light Degrees of Freedom through Mode-mixing in a Graphene Nanoribbon Metamaterial
Nikolaos Matthaiakakis, Sotiris Droulias, George Kakarantzas
https://arxiv.org/abs/2507.06809

Ultrafast All-optical control of Multiple Light Degrees of Freedom through Mode-mixing in a Graphene Nanoribbon Metamaterial
The evolution of optical technologies necessitates advanced solutions for selective and dynamic manipulation of light's degrees of freedom, including amplitude, phase, polarization, wavelength, and angular momentum. Metamaterials can offer such control through the interplay between the intrinsic material and geometrical properties of nanostructures or extrinsically through excitation and detection symmetry breaking, leading to customizable performance. However, achieving dynamic control over mu…

Harnessing curvature for helical wave generation in spiral-based metamaterial structures
Mohamed Roshdy, Osama R. Bilal
https://arxiv.org/abs/2506.04903 ht…

Harnessing curvature for helical wave generation in spiral-based metamaterial structures
Linearly polarized elastic waves propagating in a linear path have been extensively explored in numerous applications from biomedical imaging to structural health monitoring. However, elastic waves propagating in a circularly polarized helical path are less explored because of the challenges in their generation and control. In this paper, we harness conventional actuation methods combined with sheets decorated by Archimedean spirals to generate elastic helical waves. We show that our metamateri…

EMetaNode: Electromechanical Metamaterial Node for Broadband Vibration Attenuation and Self-powered Sensing
Bao Zhao, Lorenzo Di Manici, Raffaele Ardito, Eleni Chatzi, Andrea Colombi, Songye Zhu
https://arxiv.org/abs/2506.02960

EMetaNode: Electromechanical Metamaterial Node for Broadband Vibration Attenuation and Self-powered Sensing
Recent advances in mechanical metamaterials and piezoelectric energy harvesting provide exciting opportunities to guide and convert the mechanical energy in electromechanical systems for autonomous sensing and vibration control. However, practical realizations remain rare due to the lack of advanced modeling methods and interdisciplinary barriers. By integrating mechanical metamaterials with power electronics-based interface circuits, this paper makes a breakthrough with an electromechanical fr…

Replaced article(s) found for physics.optics. https://arxiv.org/list/physics.optics/new
[1/1]:
- Unleashing Urease Protein Dynamics with Metamaterial Optical Tweezers
Domna G. Kotsifaki, Viet Giang Truong, Mirco Dindo, Frank Cichos, Paolo Laurino, Sile Nic Chorma…

Replaced article(s) found for physics.app-ph. https://arxiv.org/list/physics.app-ph/new
[1/1]:
- Metamaterial two-sphere Newton's cradle
Simon A. Pope, Oliver B. Wright

Inverse Design of Metamaterials with Manufacturing-Guiding Spectrum-to-Structure Conditional Diffusion Model
Jiawen Li, Jiang Guo, Yuanzhe Li, Zetian Mao, Jiaxing Shen, Tashi Xu, Diptesh Das, Jinming He, Run Hu, Yaerim Lee, Koji Tsuda, Junichiro Shiomi
https://arxiv.org/abs/2506.07083

Inverse Design of Metamaterials with Manufacturing-Guiding Spectrum-to-Structure Conditional Diffusion Model
Metamaterials are artificially engineered structures that manipulate electromagnetic waves, having optical properties absent in natural materials. Recently, machine learning for the inverse design of metamaterials has drawn attention. However, the highly nonlinear relationship between the metamaterial structures and optical behaviour, coupled with fabrication difficulties, poses challenges for using machine learning to design and manufacture complex metamaterials. Herein, we propose a general f…

Snap-Through Thermomechanical Metamaterials for High-Performance Thermal Rectification
Qinyun Ding, Yuhao Wang, Guanqing Xiong, Wei Chen, Ying Chen, Zhaoguang Wang, Arup Neogi, Jaehyung Ju
https://arxiv.org/abs/2506.23489

Snap-Through Thermomechanical Metamaterials for High-Performance Thermal Rectification
Thermal diodes that enable directional heat transport are essential for advanced thermal management in microelectronics, energy systems, and thermal logic devices. However, existing designs based on phase-change materials, nanostructures, or interfacial engineering suffer from limited rectification performance, configurational inflexibility, and poor scalability. Here, we present a thermomechanical metamaterial-based thermal diode that combines temperature-responsive actuation with structural b…