Results 131 to 140 of about 851,945 (325)

A Fixed Point Theorem for Semi Compatible Maps in Fuzzy Metric Space

, 2013
Kanhaıya Jha
openalex   +1 more source

Electric‐Fish‐Inspired Thin Hydrogel Electrocytes Achieve High Power Density and Environmental Robustness

Advanced Science, EarlyView.
This study presents thin, environmentally stable hydrogel power sources inspired by electric fish. Made using layer‐by‐layer spin‐coating with glycerol‐enhanced solutions, they offer precise layer control, long‐term hydration, and anti‐freezing stability.
Dor Tillinger, Wonbae Lee, Haley M. Tholen, Derek M. Hall, Joseph S. Najem   +4 more
wiley   +1 more source

Active Thermal Metasurfaces Enable Superscattering of Thermal Signatures Across Arbitrary Shapes and Thermal Conductivities

Advanced Science, EarlyView.
This study proposes a thermal superscatterer capable of manipulating thermal scattering signatures far exceeding the actual scale of objects. Utilizing transformation thermotics and active thermal metasurfaces, the device reproduces the thermal scattering signature of the enlarged thermal scatterer.
Yichao Liu, Yawen Qi, Fei Sun, Jinyuan Shan, Hanchuan Chen, Yuying Hao, Hongming Fei, Binzhao Cao, Xin Liu, Zhuanzhuan Huo   +9 more
wiley   +1 more source

Persistent Magnetism and Tunable Doping of Monolayer Graphene via Europium Density Modulation

Advanced Science, EarlyView.
The modulation of europium density at the graphene/rhenium interface enables electron doping of monolayer graphene both beneath and beyond the van Hove singularity. The interfacial europium is ferromagnetic, with a transition from a mixed Eu(II)/Eu(III) valence in the dense phase to a pure Eu(II) state in the diluted phase.
M. Jugovac, I. Cojocariu, G. Bihlmayer, P. Gargiani, M. Valvidares, C. A. Brondin, S. Blügel, A. Locatelli, T. O. Mentes, P. Perna   +9 more
wiley   +1 more source

A Generalization of Kannan's Fixed Point Theorem

Fixed Point Theory and Applications, 2009
In order to observe the condition of Kannan mappings, we prove a generalization of Kannan's fixed point theorem. Our theorem involves constants and we obtain the best constants to ensure a fixed point.
Enjouji Yusuke, Nakanishi Masato, Suzuki Tomonari   +2 more
doaj  

Cauchy Sequences in Fuzzy Metric Spaces and Fixed Point Theorems [PDF]

, 2014
Mortaza Abtahi
openalex   +1 more source

Flexible Thermoelectrics for Wearable Electronics: Trends and Benchmarks in Solid‐State and Ionic Materials, Textile Architectures, Interface Engineering, and Device Performance

Advanced Electronic Materials, EarlyView.
Thermoelectric generators (TEGs) convert waste heat into electricity for self‐powered and wearable electronics. This review highlights advances in flexible, hybrid, and ionic thermoelectric materials, emphasizing ionic thermopower control, textile integration, and hybrid TEG–supercapacitor systems for combined harvesting, sensing, and storage.
Kaliyannan Manojkumar, Moparthi Haritha, Arunmetha Sundaramoorthy, Xiaowen Ruan, Sai Kishore Ravi, Venkateswaran Vivekananthan   +5 more
wiley   +1 more source

An extension of Fisher fixed point theorem in partially ordered generalized metric spaces

, 2017
Karim Chaira, Abderrahim Eladraoui, Mustapha Kabil   +2 more
openalex   +2 more sources

NONLINEAR CONDITIONS FOR COINCIDENCE POINT AND FIXED POINT THEOREMS [PDF]

, 2012
Wei–Shih Du, Shao-Xuan Zheng
openalex   +1 more source

Machine Learning for Accelerating Energy Materials Discovery: Bridging Quantum Accuracy with Computational Efficiency

Advanced Energy Materials, EarlyView.
This perspective highlights how machine learning accelerates sustainable energy materials discovery by integrating quantum‐accurate interatomic potentials with property prediction frameworks. The evolution from statistical methods to physics‐informed neural networks is examined, showcasing applications across batteries, catalysts, and photovoltaics ...
Kwang S. Kim
wiley   +1 more source