Tootfinder

Polymorphism Crystal Structure Prediction with Adaptive Space Group Diversity Control
Sadman Sadeed Omee, Lai Wei, Sourin Dey, Jianjun Hu
https://arxiv.org/abs/2506.11332

Polymorphism Crystal Structure Prediction with Adaptive Space Group Diversity Control
Crystalline materials can form different structural arrangements (i.e. polymorphs) with the same chemical composition, exhibiting distinct physical properties depending on how they were synthesized or the conditions under which they operate. For example, carbon can exist as graphite (soft, conductive) or diamond (hard, insulating). Computational methods that can predict these polymorphs are vital in materials science, which help understand stability relationships, guide synthesis efforts, and d…

NeurOptimisation: The Spiking Way to Evolve
Jorge Mario Cruz-Duarte, El-Ghazali Talbi
https://arxiv.org/abs/2507.08320 https://arxiv.…

NeurOptimisation: The Spiking Way to Evolve
The increasing energy footprint of artificial intelligence systems urges alternative computational models that are both efficient and scalable. Neuromorphic Computing (NC) addresses this challenge by empowering event-driven algorithms that operate with minimal power requirements through biologically inspired spiking dynamics. We present the NeurOptimiser, a fully spike-based optimisation framework that materialises the neuromorphic-based metaheuristic paradigm through a decentralised NC system.…

Indium Hydroxide Ceramic Targets: A Breakthrough in High-Mobility Thin-Film Transistor Technology
Hikaru Sadahira, Prashant R. Ghediya, Hyeonjun Kong, Akira Miura, Yasutaka Matsuo, Hiromichi Ohta, Yusaku Magari
https://arxiv.org/abs/2507.11011

Indium Hydroxide Ceramic Targets: A Breakthrough in High-Mobility Thin-Film Transistor Technology
Thin-film transistors composed of a hydrogen-containing indium oxide active layer are promising candidates for backplane devices in next-generation flat panel displays, offering higher definition and faster operation. However, the hydrogen incorporation process during film deposition poses challenges for scalable and industrial development due to both safety and controllability issues. Here, we demonstrate that using indium hydroxide ceramic as the target material for film deposition overcomes …

A Cryogenic Uniaxial Strain Cell for Elastoresistance Measurements
Eckelt Franz, Cavallaro Isidoro, Wagner Ralph, Haghighirad Amir-Abbas, Wolf Thomas, Wilmers Jana, Bargmann Swantje, Hess Christian
https://arxiv.org/abs/2507.08428

A Cryogenic Uniaxial Strain Cell for Elastoresistance Measurements
We present the design, implementation, and validation of a cryo-compatible strain cell for elastoresistance measurements in quantum materials. The cell is actuated by three large-format piezoelectric stacks and enables both compressive and tensile strain up to approximately $\pm5\%$. The relative displacement of the sample holders is measured in situ using a high-resolution capacitive displacement sensor, ensuring precise strain control throughout measurement. To operate the strain cell over a …

Truckers Say Oil and Gas Companies Are Violating Hazardous Materials Transport Regulations | Marfa Public Radio https://www.marfapublicradio.org/news/2025-06-30/truckers-say-oil-and-gas-companies…

Truckers Say Oil and Gas Companies Are Violating Hazardous Materials Transport Regulations
The fracking industry says its operators strictly adhere to regulations, and it has “no greater priority” than ensuring worker and community safety.

Synergistic control of radical generation in a radio frequency atmospheric pressure plasma jet via voltage waveform tailoring and structured electrodes
Mate Vass, Xiaokun Wang, Ihor Korolov, Julian Schulze, Thomas Mussenbrock
https://arxiv.org/abs/2506.10099

Synergistic control of radical generation in a radio frequency atmospheric pressure plasma jet via voltage waveform tailoring and structured electrodes
The synergy between voltage waveform tailoring and structured electrodes is investigated in a radio-frequency (RF) atmospheric-pressure microplasma jet operated in helium with a 0.1% oxygen admixture. The device incorporates rectangular trenches in both electrodes and is driven by "Peaks" and "Valleys" waveforms synthesized from four harmonics (base frequency $f_{\rm b} = 13.56$~MHz, $V_{\rm pp} = 500$~V, $P=$1.2~W). Two-dimensional plasma fluid simulations, together with spatially and temporal…

Linear operators preserving volume polynomials
Lukas Grund, June Huh, Mateusz Micha{\l}ek, Hendrik S\"uss, Botong Wang
https://arxiv.org/abs/2506.22415

Linear operators preserving volume polynomials
Volume polynomials measure the growth of Minkowski sums of convex bodies and of tensor powers of positive line bundles on projective varieties. We show that Aluffi's covolume polynomials are precisely the polynomial differential operators that preserve volume polynomials, reflecting a duality between homology and cohomology. We then present several applications to matroid theory.

Dual-mode superconducting diode effect enabled by in-plane and out-of-plane magnetic field
Chengyu Yan, Huai Guan, Zhenyu Zhang, Yiheng Sun, Qiao Chen, Xinming Zhao, Chuanwen Zhao, James Jun He, Shun Wang
https://arxiv.org/abs/2506.07354

Dual-mode superconducting diode effect enabled by in-plane and out-of-plane magnetic field
The discovery of the superconducting diode effect (SDE) has been cherished as a milestone in developing superconducting electronics. Tremendous efforts are being dedicated to realizing SDE in a wide variety of material platforms. Despite the diversity in the hosting materials and device designs, SDE is usually operated in a single mode which is enabled by either out-of-plane or in-plane magnetic field/magnetization. In this work, we report the realization of a dual-mode SDE in 2H-$\mathrm{NbS_2…

Effect of alloying additions on the lattice ordering of Ti$_2$AlNb intermetallic
Adilakshmi Chirumamilla, Gopalakrishnan Sai Gautam
https://arxiv.org/abs/2507.03618

Effect of alloying additions on the lattice ordering of Ti$_2$AlNb intermetallic
Alloys based on the orthorhombic-Ti$_2$AlNb intermetallic phase (O-phase) are promising materials for high-temperature applications in jet engines, given that they can potentially replace Ni-based superalloys in some operating regions of the engines. However, the O-phase is prone to lattice disordering at high temperatures, primarily via anti-site defect formation across the Ti and Nb sites, which can reduce the material's creep resistance and high-temperature tensile properties, necessitating …

Generation of Pure Spin Current with Insulating Antiferromagnetic Materials
Yingwei Chen, Junyi Ji, Liangliang Hong, Xiangang Wan, Hongjun Xiang
https://arxiv.org/abs/2507.00369

Generation of Pure Spin Current with Insulating Antiferromagnetic Materials
The generation of pure spin currents is critical for low-dissipation spintronic applications, yet existing methods relying on spin-orbit coupling or ferromagnetic interfaces face challenges in material compatibility and operational robustness. We propose a paradigm-shifting approach to generate symmetry-protected pure spin currents by applying mechanical stress on insulating antiferromagnetic materials, i.e., the pure piezospintronic effect. We first classify magnetic point groups enabling pure…