Tootfinder

🍬 Shape-shifting material could transform future of implantable and ingestible medical devices
https://medicalxpress.com/news/2025-09-shifting-material-future-implantable-ingestible.html

Shape-shifting material could transform future of implantable and ingestible medical devices
Researchers led by Rice University's Yong Lin Kong have developed a soft but strong metamaterial that can be controlled remotely to rapidly transform its size and shape.

Breakdown of the Wiedemann-Franz law in an interacting quantum Hall metamaterial
Patrice Roche, Carles Altimiras, Fran\c{c}ois D. Parmentier, Olivier Maillet
https://arxiv.org/abs/2510.10391

Breakdown of the Wiedemann-Franz law in an interacting quantum Hall metamaterial
Quantum heat transport by electrons in ballistic channels is usually well-described in the Landauer-Büttiker framework, which fails when introducing strong Coulomb interactions. We theoretically show that a chain of small metallic dots where charge cannot accumulate, connected by chiral ballistic channels, conducts heat better than charge. We relate this feature to the competition between heat diffusion by neutral excitations and Coulomb interactions in the chain, which defines a temperature g…

Plasmonic metamaterial time crystal
Tingwen Guo, Jules Sueiro, Gian Marcello Andolina, Artem Levchuk, Stefano Ponzoni, Romain Grasset, Donald Monthe, Ian Aupiais, Dmitri Daineka, Javier Briatico, Thales VAG de Oliveira, Alexey Ponomaryov, Atiqa Arshad, Arjun Karimbana-Kandy, Gulloo Lal Prajapati, Igor Ilyakov, Jan-Christoph Deinert, Luca Perfetti, Marco Schiro, Yannis Laplace

Plasmonic metamaterial time crystal
Periodically driven optical materials and metamaterials have recently emerged as a promising platform for realizing photonic time crystals (PTCs) -systems whose optical properties are strongly and periodically modulated on time scales comparable to the optical cycle of light. These time-varying structures are the temporal counterparts of spatial photonic crystals (SPCs), for which a large and periodic dielectric contrast is achieved spatially on wavelength scales. Just as SPCs have revolutioniz…

Toggling stiffness via multistability
Hugo de Souza Oliveira, Michele Curatolo, Renate Sachse, Edoardo Milana
https://arxiv.org/abs/2510.09511 https://arxi…

Toggling stiffness via multistability
Mechanical metamaterials enable unconventional and programmable mechanical responses through structural design rather than material composition. In this work, we introduce a multistable mechanical metamaterial that exhibits a toggleable stiffness effect, where the effective shear stiffness switches discretely between stable configurations. The mechanical analysis of surrogate beam models of the unit cell reveal that this behavior originates from the rotation transmitted by the support beams to …

Transmission Loss of a Labyrinthine Acoustic Metamaterial Augmented with Multichannel Feedforward Active Noise Control
Gregory M. Hernandez, Jordan Cheer, Gianluca Memoli
https://arxiv.org/abs/2509.23491

Transmission Loss of a Labyrinthine Acoustic Metamaterial Augmented with Multichannel Feedforward Active Noise Control
Acoustic metamaterials and active noise control are two advanced noise control treatments that can typically offer performance that exceeds that of conventional passive noise control treatments. Acoustic metamaterials utilize sub-wavelength structures to realize sound field control, whilst active noise control treatments achieve control via the introduction of additional sources driven to generate a secondary sound field that interferes in a controlled way with the original, primary sound field…

Systematic Study of Amorphous ABC Heterostructures at the Atomic Scale as a Nonlinear Optical Metamaterial
Martin Mi\v{c}ulka, Jinsong Liu, Sebastian Beer, Raihan Rafi, Denys Sevriukov, Sergiy Yulin, Vladimir Roddatis, Stefan Nolte, Isabelle Staude, Andreas T\"unnermann, Sven Schr\"oder, Adriana Szeghalmi
https://arxiv.org/abs/25…

Systematic Study of Amorphous ABC Heterostructures at the Atomic Scale as a Nonlinear Optical Metamaterial
The systematic exploration of ABC type heterostructures reveals that nanoscale morphological modification markedly improves nonlinear optical properties to maximize the artificial bulk second-order susceptibility. These amorphous birefringent heterostructures are fabricated through cyclic plasma-enhanced atomic layer deposition of three oxides, effectively breaking centrosymmetry. We observe a dependence of optical nonlinearity on the thickness variation of three constituent materials: SiO$_2$ …

Semiconductor Meta-Graphene and Valleytronics
Praveen Pai, Aron W. Cummings, Alexander Cerjan, Wei Pan, Fan Zhang, Catalin D. Spataru
https://arxiv.org/abs/2510.05250 https://…

Semiconductor Meta-Graphene and Valleytronics
Nano-patterned semiconductor interfaces offer a versatile platform for creating quantum metamaterials and exploring novel electronic phenomena. In this study, we illustrate this concept using artificial graphene--a metamaterial featuring distinctive properties including Dirac and saddle points. We demonstrate that introducing additional nano-patterning can open a Dirac band gap, giving rise to what we term artificial hexagonal boron nitride (AhBN). The calculated valley Chern number of AhBN ind…

Electrically Tunable Excitonic-Hyperbolicity in Chirality-Pure Carbon Nanotubes
Jason Lynch, Pavel Shapturenka, Mohammad Mojtaba Sadafi, Zoey Liu, Tobia Ruth, Kritika Jha, Zahra Fakhraai, Hossein Mosallaei, Nader Engheta, Jeffrey A. Fagan, Deep Jariwala
https://arxiv.org/abs/2509.24848

Electrically Tunable Excitonic-Hyperbolicity in Chirality-Pure Carbon Nanotubes
Metamaterials exhibiting hyperbolic dispersion enable unprecedented control over light-matter interactions, from sub-diffraction imaging to enhanced spontaneous emission. However, conventional plasmonic hyperbolic metamaterials suffer from limited tunability and lack intrinsic emission capabilities, constraining their utility for active photonic devices. Here, we demonstrate the first room-temperature, electrically tunable, excitonic hyperbolic metamaterial using aligned films of chirality-pure…