Recycling news: 2026

Research & science Sustainable membrane‐integrated technologies for tannery wastewater treatment toward membrane innovations, fouling control, and techno‐economic scalability Environmental Progress &Sustainable Energy, EarlyView. Environmental Progress & Sustainable Energy (Wiley) · 23 Jul 2026 Industry news Great Barrier Reef faces mass bleaching and collapse as El Nino builds record strength, scientists warn Scientists say coming event threatens to kill coral across large stretches of reef and wipe out some species in particular areas The Independent — Climate · 23 Jul 2026 Policy & government Safe Routes to School Infrastructure Program Applications Due - Mass.gov Massachusetts DEP · 23 Jul 2026 Council news Rhymetime in Sutton Central Library - London Borough of Sutton Sutton Council · 23 Jul 2026 Research & science Safeguarding the Constitution: Key Steps to Strengthen UK Democratic Resilience - UCL Blogs UCL News · 23 Jul 2026 Research & science Elastic Trapped States at Dislocation Defects in Scaled Coupling and Hofstadter Models arXiv:2607.19890v1 Announce Type: new Abstract: Elastic topological dislocations provide a pathway for trapping elastic wave energy at internal defects, rather than being confined solely to external boundaries or corners, which are typically associated with topological insulators (TIs). However, two practical constraints persist. First, highly confined dislocation states based on conventional S… arXiv — physics.app-ph (Applied Physics preprints) · 23 Jul 2026 Research & science Dirac-vortex modes beyond the continuum limit arXiv:2607.20000v1 Announce Type: cross Abstract: Dirac-vortex modes (DVMs) in Kekule-modulated lattices provide a topological route to wave confinement and are commonly described by the continuum Jackiw-Rossi model, in which the initial phase acts as a redundant gauge degree of freedom and does not affect observables of the mode. Here we show that this picture breaks down in discrete lattices … arXiv — physics.app-ph (Applied Physics preprints) · 23 Jul 2026 Research & science Exploring Multifunctionality in MgO-Based Magnetic Tunnel Junctions with Coexisting Magnetoresistance and Memristive Properties arXiv:2607.20040v1 Announce Type: cross Abstract: Magnetic tunnel junctions (MTJs) and memristors are two key emerging nanotechnologies that attracted significant interest for potential applications at the forefront of the digital revolution, including sensing, data storage, and non-conventional computation. The co-integration of these phenomena into a single multifunctional device is an import… arXiv — physics.app-ph (Applied Physics preprints) · 23 Jul 2026 Research & science Material-agnostic temperature field prediction for metal additive manufacturing via a parametric PINN framework arXiv:2604.14562v2 Announce Type: replace-cross Abstract: Accurate temperature field prediction in metal additive manufacturing (AM) is essential for understanding the process-structure-performance relationship. While prior studies have explored generalization to unseen process conditions, they often require extensive datasets, costly retraining, or pre-training. Generalization across different… arXiv — physics.app-ph (Applied Physics preprints) · 23 Jul 2026 Research & science Electron-Induced Formation of C$_{2}$ on Si(100) from Acetylene and Ethylene arXiv:2607.19488v1 Announce Type: new Abstract: Hydrogen Desorption Lithography on Si(100) demonstrates the ability of the Scanning Tunneling Microscope (STM) to create functional atomic-scale structures and devices. The dehydrogenation of adsorbed molecules represents a potential complementary technique that has received little attention. For example, formation of C$_{2}$ could introduce local… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Photoemission from Semi-Infinite Crystals: An \emph{Ab Initio} Scattering-State Approach arXiv:2607.19551v1 Announce Type: new Abstract: Photoemission is an escape problem, yet first-principles calculations usually trap the electron in a periodic box. We present a parameter-free \emph{ab initio} framework that removes this artificial boundary by constructing open scattering states for semi-infinite crystal-vacuum interfaces from Wannier Hamiltonians and Green-function embedding. Th… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Assessing the Influence of d-Orbital Radius on the Formation of Localized Photogenerated States in Corundum Metal Oxides arXiv:2607.19569v1 Announce Type: new Abstract: Photogenerated polarons are fundamental to the photophysics of transition metal oxide semiconductors. It is therefore imperative to understand the mechanisms by which polarons form upon photoexcitation of transition metal oxides to realize their potential in photoapplications. Hematite ({\alpha}-Fe2O3) is known to form photoexcited small polarons,… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Macroscopic Polarization and Magnetization from Cavity Vacuum Fluctuations arXiv:2607.19612v1 Announce Type: new Abstract: Cavity light-matter interaction has recently emerged as a new avenue for manipulating material properties without driving fields. Here, we demonstrate that cavity vacuum fluctuations can induce macroscopic polarization (magnetization), even in materials that lack spontaneous polarization (net magnetization) in free space. Starting from the effecti… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Nitrospinics as a platform from orbital-torque memory to artificial intelligence arXiv:2607.19656v1 Announce Type: new Abstract: The exploration of energy-efficient and functional spintronics has attracted considerable attention. Orbital transport has opened new pathways for current-induced torque generation beyond the conventional spin transport based on the spin Hall effect. In addition, artificial intelligence computing has been demonstrated using spintronic devices. Fur… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Raman spectroscopy of van der Waals topological magnet GdGaI arXiv:2607.19663v1 Announce Type: new Abstract: We report polarization-resolved Raman spectroscopy of a van der Waals compound GdGaI that is a candidate for excitonic insulators. By combining the symmetry analysis with density functional theory calculations, we identify six Raman-active phonons. The spectra exhibit only the expected anharmonic hardening down to 4 K: no additional peaks, no soft… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Synergistic Interface Stability and High Room-Temperature Ionic Conductivity for Wide-Temperature All-Solid-State Batteries Based on Li6+xSixSb1-xS5I Electrolytes arXiv:2607.19664v1 Announce Type: new Abstract: Solid-state lithium-ion batteries (LIBs) are increasingly recognized for their exceptional energy density and safety. However, their widespread adoption is challenged by persistent issues such as thermal and electrochemical instability, dendrite formation, and limited compatibility with high-voltage cathodes. Sulfide-based solid electrolytes (SEs)… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Analytical Retrieval of Material Parameters in Monolayer Transition-Metal Dichalcogenides Based on a Solvable Exciton Model arXiv:2607.19698v1 Announce Type: new Abstract: We develop an analytical procedure to retrieve fundamental material parameters of monolayer transition-metal dichalcogenides from optical and magneto-optical exciton spectra, based on the solvable modified Kratzer model. The proposed retrieval procedure naturally consists of two complementary stages. In the first stage, explicit inversion formulas… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science A Thermodynamic Pinning Criterion for Two-Dimensional Structural Superlubricity arXiv:2607.19732v1 Announce Type: new Abstract: Incommensurability and elastic reconstruction do not by themselves define a structurally superlubric phase. We define fully sliding and pinned zero-temperature phases by $\limsup_{A\to\infty}\tau_{\rm dep}^{\max}(A)=0$ and $\liminf_{A\to\infty}\tau_{\rm dep}^{\min}(A)>0$, respectively; $\Lambda_n=|V_n|G_{n,i}[D_{\rm rel}^{-1}(\mathbf q_n)]_{ij}G_{… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Numerical exploration on unveiling the photovoltaic potential of MgXS3(X = Ti, Zr, Hf) chalcogenide perovskites arXiv:2607.19789v1 Announce Type: new Abstract: Lead-free chalcogenide perovskites offer a nontoxic and thermally robust path beyond Pb-based perovskite solar cells (PSCs), but their device-level behavior in realistic three-dimensional geometries remains insufficiently characterized. In this work, we investigate ZnSe/MgXS3(X = Ti, Zr, Hf)/Sb2S3 solar cell architecture where MgXS3 absorbers from… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science The origin of ferroelectricity, polarization and high resistivity in Aurivillius CaBi2B2O9 (B = Ta, Nb) arXiv:2607.19885v1 Announce Type: new Abstract: Aurivillius layered oxides are important candidates for high-temperature ferroelectric and piezoelectric application. In this work, we combine group theoretic analysis with first-principles calculations to systematically investigate the origin of ferroelectric phase transition, polarization, piezoelectric response, and intrinsic electrical insulat… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Symmetry-Based Design Rules for Second-Harmonic Generation in Stacked and Twisted MoS2 Bilayers arXiv:2607.19937v1 Announce Type: new Abstract: Understanding how stacking controls the nonlinear optical response of two-dimensional materials is key to designing van der Waals heterostructures with tailored functionalities. Here, we establish a comprehensive symmetry-based framework mapping the structural configuration of MoS2 bilayers across four point groups (D3h, D3d, C3v, C3) to their sec… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Interface-resolved structural properties of epitaxial Y$_3$Fe$_5$O$_{12}$/ Gd$_3$Fe$_5$O$_{12}$ bilayers grown on GGG(111) by pulsed laser deposition arXiv:2607.19979v1 Announce Type: new Abstract: Epitaxial Y$_3$Fe$_5$O$_{12}$ (YIG) and Gd$_3$Fe$_5$O$_{12}$ (GdIG) thin films, along with their bilayer heterostructures, were grown on Gd$_3$Ga$_5$O$_{12}$(GGG)(111) substrates using pulsed laser deposition. Structural properties were investigated using X-ray diffraction, reciprocal space mapping, and cross-sectional transmission electron micros… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Huge hole injection in tungsten dichalcogenide heterostructures without electric gating: a DFT study arXiv:2607.20032v1 Announce Type: new Abstract: Van der Waals heterostructures based on transition metal dichalcogenides, TMDs, provide a versatile platform for tailoring electronic properties through interlayer charge transfer, CT. Precise control of CT is essential because it directly determines the electronic structure and carrier concentration in atomically thin materials. Recently, the con… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Thickness-dependent crack suppression and wrinkle formation in freestanding BaTiO3 membranes arXiv:2607.20054v1 Announce Type: new Abstract: Freestanding ferroelectric oxide membranes offer a promising route toward silicon-integrated low-power electronic and memory devices, but reproducible membrane quality remains challenging, particularly in ultrathin BaTiO3 (BTO), where cracking and wrinkling hinder integration. Here, we show that crack and wrinkle formation in released BaTiO3 membr… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Kinetically-Arrested Phase Separation leads to Tunable Domain Structures in Vapor-Deposited Glasses arXiv:2607.20066v1 Announce Type: new Abstract: The characteristic length scale of phase-separated organic thin film blends is a critical structural parameter governing the performance and functionality of organic electronic devices. The arrested morphologies of vapor-deposited organic thin films result from the interplay between thermodynamic driving forces and kinetic constraints during depos… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science From MLIPs to Microstructure: A High-Throughput Computational Framework to Design Spinodal Alloys in High-Dimensional Composition Spaces via Analytic Derivatives of CALPHAD Model Predictions arXiv:2607.20077v1 Announce Type: new Abstract: Identifying regions of design space subject to spinodal decomposition is a critical component of alloy design in high-dimensional composition spaces. In cases where designers are seeking to exploit spinodal microstructures to tailor alloy properties, prediction of microstructure evolution and morphology is also needed. In this work, we present a M… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Role of Resonant $\mathbf{k}$-Points in the Transient Optical Response of Pumped Germanium arXiv:2607.20240v1 Announce Type: new Abstract: Pump-induced transient optical properties combine contributions from electronic states throughout the Brillouin zone, but the relative relevance of off-resonant and l-photon resonant crystal momenta has remained unexplored. We address this issue in pumped germanium by resolving the transient absorptive response into momentum-space classes defined … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Competing ferromagnetic and antiferromagnetic interactions in non-altermagnetic Ru$_{1-x}$Cr$_{x}$O$_{2}$ arXiv:2607.20298v1 Announce Type: new Abstract: We investigate the proposal of hole doping RuO$_{2}$ via alloying with Cr ions to induce altermagnetism. Thin film samples of Ru$_{1-x}$Cr$_{x}$O$_{2}$ ($0 \leq x \leq 0.28$) were prepared by reactive magnetron co-sputtering on TiO$_{2}$ substrates, with epitaxial nature verified by X-ray diffraction and composition depth profiles determined by X-… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Optical Magnetic Switching in Odd-Parity Magnets with Spin-Orbit Coupling arXiv:2607.19483v1 Announce Type: cross Abstract: $p$-wave magnets exhibit odd-parity spin polarization in momentum space, with spin splitting that reverses under $\vec{k}\rightarrow -\vec{k}$, while preserving zero net magnetization. Here we show that, in odd-parity magnets with spin-orbit coupling, elliptically polarized light generates a momentum-independent spin-dependent term that dynamica… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Reading and Steering Representations of Materials-Science Mechanisms in an Open-Weight Language Model arXiv:2607.20058v1 Announce Type: cross Abstract: Large language models can answer scientific questions, yet a correct output does not reveal whether the model represents or uses the governing physics. Here we show that materials science mechanism information in the open-weight google/gemma-4-E4B-it model has three experimentally separable forms: concepts are readable in individual hidden state… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science A Theoretical Framework for the Coupling of Macroscale-Nanoscale Mechanochemical Phenomena in Condensed Matter arXiv:2607.20217v1 Announce Type: cross Abstract: The field of covalent mechanochemistry has transitioned from fundamental science to engineering applications, yet it lacks a robust theoretical framework for predicting reaction kinetics in condensed matter. Existing analytical models fail under realistic conditions where macroscopic strains drive molecular-scale deformations that are highly non… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Coupling phase interference effects in a multimode cavity magnonics system arXiv:2607.20234v1 Announce Type: cross Abstract: Coupling phases play a decisive yet often overlooked role in cavity magnonics, particularly in complex multimode systems. Here, we investigate phase-mediated interference effects in a cavity magnonics system comprising a four-post re-entrant microwave cavity coupled to Yttrium Iron Garnet (YIG) spheres. Using an input-output model that explicitl… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Magnetoresistive Memory in the Paramagnetic Phase of Eu$_5$In$_2$As$_6$ arXiv:2607.20287v1 Announce Type: cross Abstract: Magnetoresistive materials that respond sensitively to applied fields are central to modern data storage technologies. Here we unveil a novel Magnetoresistive Memory (MRM) in Eu$_5$In$_2$As$_6$, where the electrical resistivity depends not only on the magnitude but also on the history of the applied magnetic field. Such an effect has been report… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Probing the temperature dependence of dielectric function of ternary transition metal dichalcogenides: towards thermo-driven ultrathin photonic components arXiv:2607.20344v1 Announce Type: cross Abstract: Transition metal dichalcogenides (TMDs), along with their ternary derivatives, have attracted considerable attention mostly due to pronounced excitonic resonances emerging in visible (Vis) and near-infrared (NIR) spectral regions, enabling strong light-matter interaction. Nevertheless, a comprehensive insight of the temperature-dependent optical… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science A statistical understanding of oxygen vacancies in distorted high-entropy oxides arXiv:2504.11587v3 Announce Type: replace Abstract: High-entropy perovskite oxides have emerged as promising electrode materials for solid oxide electrolyzers. However, their compositional complexity makes the formation of oxygen vacancies, which influence properties such as oxygen ionic conductivity and thermal expansion, challenging to predict. Here, we experimentally measure changes in oxyge… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Orbital Hall Effect Enables Field-Free Magnetization Reversal in Ferrimagnets without Additional Conversion Layer arXiv:2506.07608v2 Announce Type: replace Abstract: The spin Hall effect (SHE) enables efficient electrical manipulation of magnetization through the spin Hall current \left(\mathbit{J}_{\mathbit{SHE}}\right), advancing energy-efficient spintronics. In parallel, the orbital Hall effect (OHE) offers an alternative pathway to SHE for converting charge current into an angular momentum flow. In thi… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Interpretable Nanoporous Materials Design with Symmetry-Aware Networks arXiv:2509.15908v4 Announce Type: replace Abstract: Reticular frameworks hold promise for diverse sustainable applications, yet their immense chemical space limits efficient and systematic design. While machine learning provides a compelling pathway to accelerate exploration, existing approaches often lack either interpretability or fidelity in linking crystal geometry to emergent properties. H… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Unraveling the defect landscape of wide-bandgap perovskites from electrical and photoelectrical characterization of thin films and solar cells arXiv:2510.19712v2 Announce Type: replace Abstract: Understanding and controlling defect states in halide perovskites is critical to advancing their performance in solar cells, yet their complex defect landscape remains elusive. Charged defects in perovskites can migrate under an applied electric field, complicating their characterization by conventional approaches. Here, we integrate current-v… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Ab initio Phase Diagram of Ta2O5 arXiv:2602.03649v3 Announce Type: replace Abstract: Tantalum pentoxide (Ta2O5) is a polymorphic wide-bandgap semiconductor with outstanding dielectric properties and widespread use in optical and electronic technologies. Its rich structural diversity, arising from multiple polymorphs accessible under different synthesis conditions, has made Ta2O5 a long-standing subject of interest. However, a … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science First-Principles Analysis of Chirality-Induced Spin Selectivity at Molecule-Metal Interfaces in Photoemission arXiv:2603.22725v2 Announce Type: replace Abstract: Spin-resolved photoelectron spectroscopy (PES) probes chirality-induced spin selectivity (CISS), yet it remains unclear whether the measured spin polarization reflects molecular chirality itself or the broader electronic structure of the hybrid interface. We present a first-principles analysis of PES spin polarization at chiral molecule-metal … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026