Results 81 to 90 of about 193,905 (317)

Mechanically Adaptable High‐Performance p(SBMA‐MMA) Copolymer Hydrogel with Iron (II/III) Perchlorate for Wearable Thermocell Applications

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
A high‐performance n‐type element for quasi‐solid‐state thermocells has been introduced, outperforming conventional p‐type elements and showcasing the potential to harness body heat as an energy source or power embedded sensors. This advance significantly contributes to waste thermal energy harvesting and wearable technology, paving the way for self ...
Gilyong Shin, Jae Yoon Baek, Ju Hyeon Kim, Ju Hwan Lee, Hyeong Jun Kim, Byeong Jun So, Yuseung Choi, Sungryul Yun, Taewoo Kim, Jei Gyeong Jeon, Tae June Kang   +10 more
wiley   +1 more source

Fourier series approximation for the Cauchy singular integral equation

Journal of Numerical Analysis and Approximation Theory, 2018
Using the Fourier series as a projection in the Galerkin method, we approach the solution of the Cauchy singular integral equation. This study is carried in \(L^2\). Numerical examples are developped to show the effectiveness of this method.
Hamid Boulares, Hamza Guebbai, Amira Arbaoui   +2 more
doaj   +2 more sources

Fourier-Like Multipliers and Applications for Integral Operators [PDF]

Complex Analysis and Operator Theory, 2018
Timelimited functions and bandlimited functions play a fundamental role in signal and image processing. But by the uncertainty principles, a signal cannot be simultaneously time and bandlimited. A natural assumption is thus that a signal is almost time and almost bandlimited.
Saifallah Ghobber, Saifallah Ghobber
openaire   +4 more sources

Achieving Large and Anisotropic Spin‐Mediated Thermal Transport in Textured Quantum Magnets

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
An advanced solvent‐cast cold pressing method is developed to synthesize highly textured quantum magnets. By aligning spin chains in Ca2CuO3 perpendicular to the pressing direction, a spin‐mediated thermal conductivity of 10 ± 1 W m⁻¹ K⁻¹ is achieved, the highest reported for polycrystalline quantum materials.
Shucheng Guo, Xue Bai, Boqun Liang, Thomas Hoke, Ming Liu, Rafal E. Dunin‐Borkowski, Xi Chen   +6 more
wiley   +1 more source

A Fourier transform differentiator operator

Results in Physics
By utilizing the Fourier transform, we present a practical method for evaluating a function of a derivative applied to any other arbitrary function of a single complex variable.
Blanca L. Moreno-Ley, Jorge A. Anaya-Contreras, Arturo Zúñiga-Segundo, Héctor M. Moya-Cessa   +3 more
doaj   +1 more source

3D Printed Ultra‐Fast Plastic Scintillators Based on Perovskite‐Photocurable Polymer Composite

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The demand for radiation detection is increasing in a number of fields, including high‐energy physics, medical imaging, and homeland security. This study serves to demonstrate the potential for the fabrication of fast perovskite‐based scintillators with complex shapes via stereolithographic additive manufacturing, representing a new path toward the ...
Antonella Giuri, Amal C Chekkallur, Mario Calora, Rosanna Mastria, Loris Martinazzoli, Etiennette Auffray, Sanosh Kunjalukkal Padmanabhan, Sara Carturan, Sandra Moretto, Gianluca Quarta, Lucio Calcagnile, Matteo Polo, Alberto Quaranta, Alfonso Maffezzoli, Anna Paola Caricato, Aurora Rizzo, Carola Esposito Corcione   +16 more
wiley   +1 more source

Regularization of the electrostatics problem for three spheres and an electrostatic charge

Visnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika, 2020
A numerical-analytical algorithm for investigation of the potential of a sphere with a circular hole, surrounded by external and internal closed ribbon spheres, is constructed. The number of ribbons on the spheres is arbitrary. The ribbons on the spheres
Viacheslav Rezunenko
doaj   +1 more source

Local Formula for the Index of a Fourier Integral Operator

Journal of Differential Geometry, 2001
We show that the index of an elliptic Fourier integral operator associated to a contact diffeomorphism $ $ of cosphere bundles of two Riemannian manifolds X and Y is given by $\int_{B^*X}\hat{A}(T^*X)\exp - \int_{B^*Y}\hat{A}(T^*Y)\exp $. Here $B^*$ stands for the unit coball bundle and $ $ is a certain characteristic class depending on the ...
Nest, Ryszard, Leichtman, Eric, Tsygan, Boris   +2 more
openaire   +4 more sources

Ionic Liquid‐Based Reversible Metal Electrodeposition for Adaptive Radiative Thermoregulation Under Extreme Environments

Advanced Functional Materials, EarlyView.
A wideband tunable electrochromic device with dynamic thermal emissivity control is demonstrated. The system enables adaptive heat regulation via electrochemically modulated silver deposition, achieving efficient cooling and heating states. The flexible design ensures mechanical robustness under bending conditions, making it promising for portable and ...
Jiawei Liang, Chenxi Sui, Jiacheng Tian, Genesis Higueros, Ting‐Hsuan Chen, Ronghui Wu, Pei‐Jan Hung, Yang Deng, Natalie Rozman, Willie John Padilla, Po‐Chun Hsu   +10 more
wiley   +1 more source

High‐Performance Low‐Emissivity Paints Enabled by N‐Doped Poly(benzodifurandione) (n‐PBDF) for Energy‐Efficient Buildings

Advanced Functional Materials, EarlyView.
This study introduces a scalable and colored low‐emissivity (low‐e) paint achieved by spraying an ultrathin n‐doped poly(benzodifurandione) (n‐PBDF) coating onto various colored substrates. The low‐e paint enhances thermal regulation by reducing mid‐infrared thermal emissivity to 0.19, thereby stabilizing indoor temperatures across diverse climates ...
Xiaojie Liu, Won‐June Lee, Daniel William Carne, Yanpei Tian, Andrea Felicelli, Yue Lei, Joseph A. Romo, Liyan You, Zixin Xiong, Orlando Gabriel Rivera Gonzalez, Abdulrahman Aljwirah, Qiaoqiang Gan, Jianguo Mei, Xiulin Ruan   +13 more
wiley   +1 more source