Results 91 to 100 of about 867,116 (279)

High‐Performance, Air‐Stable and Eco‐Friendly Terpene‐Processed Organic Solar Cells via Solvent‐Composition‐Controlled Film Formation Kinetics

open access: yesAdvanced Functional Materials, EarlyView.
Solvent‐composition‐controlled film formation enables high‐performance (efficiency = 18.66%) and air‐stable terpene‐processed organic solar cells. An optimized eucalyptol/tetralin ratio of 50:50 (v/v) balances molecular solvation and aggregation kinetics, producing favorable nanoscale phase separation and vertical composition gradients.
Hyerin Jeon   +4 more
wiley   +1 more source

Paving the Way for Next‐Generation Solid‐State Waste Heat Recovery: A Thermomagnetic Materials and Systems Roadmap

open access: yesAdvanced Functional Materials, EarlyView.
Unlocking thermomagnetic low‐grade waste heat recovery. This perspective provides a comprehensive roadmap for the development of thermomagnetic materials and systems. By addressing key engineering challenges across multiple scales, it bridges the gap between micro‐power IoT devices and large‐scale industrial applications. ABSTRACT Nearly half of global
A. Waske   +13 more
wiley   +1 more source

Chaos in Inverse Parallel Schemes for Solving Nonlinear Engineering Models

open access: yesMathematics
Nonlinear equations are essential in research and engineering because they simulate complicated processes such as fluid dynamics, chemical reactions, and population growth.
Mudassir Shams, Bruno Carpentieri
doaj   +1 more source

Application of Hierarchical Two-Level Spectral Preconditioning Method for Electromagnetic Scattering from the Rough Surface

open access: yesInternational Journal of Antennas and Propagation, 2014
The higher-order hierarchical Legendre basis functions combining the electrical field integral equations (EFIE) are developed to solve the scattering problems from the rough surface. The hierarchical two-level spectral preconditioning method is developed
D. Z. Ding   +3 more
doaj   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou   +19 more
wiley   +1 more source

A Decoupled Trajectory Planning Framework Based on the Integration of Lattice Searching and Convex Optimization

open access: yesIEEE Access, 2019
This paper presents a decoupled trajectory planning framework based on the integration of lattice searching and convex optimization for autonomous driving in structured environments.
Yu Meng, Yangming Wu, Qing Gu, Li Liu
doaj   +1 more source

Rough convergence on Riesz spaces

open access: yes
This paper extends the theory of rough convergence from normed linear spaces to the more abstract setting of Riesz spaces. We introduce and systematically develop the concept of rough $\mathbb{c}$-convergence ($rc$-convergence) for nets. A net $(x_α)_{α\in A}$ in a Riesz space $E$ is said to be rough $\mathbb{c}$-convergent to $x\in E$ if there exists ...
Aydın, Abdullah   +2 more
openaire   +2 more sources

The convergence of mimetic discretization for rough grids

open access: yesComputers & Mathematics with Applications, 2004
Following the authors, the mimetic discretisation of the scalar or vector field on a some region \(\Omega\subset{\mathbb R^d}\) with a grid defined on it, is a special kind of a finite difference approximation of the field and certain of its operators such as the scalar product, the gradient, the divergence and so on. The discretisations are defined so
Hyman, J.M., Steinberg, S.
openaire   +1 more source

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri   +12 more
wiley   +1 more source

On the Convergence of Nonlinear Modes of a Finite Element Model

open access: yesShock and Vibration, 2008
Convergence of finite element models is generally realized via observation of mesh independence. In linear systems invariance of linear modes to further mesh refinement is often used to assess mesh independence.
Ramesh Balagangadhar, Joseph C. Slater
doaj   +1 more source

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