Results 91 to 100 of about 19,671,460 (302)

Can Elastomers Combine Stiffness, Toughness and Fatigue Resistance?

Advanced Materials, EarlyView.
This review studies how the molecular and macroscopic architecture of elastomers influence their mechanical properties including: stiffness, stretchability, toughness, fatigue resistance, and damping behavior. By linking the structure to performance, it proposes design principles for advanced elastomeric systems that combine mechanical properties ...
Eva Baur, Esther Amstad
wiley   +1 more source

Exposure assessment of radiofrequency electromagnetic fields (RF-EMFs) in everyday environments : methodological approaches and issue-specific perspectives [PDF]

, 2015
Introduction and objectives: There was a substantial development and persistent introduction of new telecommunication devices in the past two decades.
Urbinello, Damiano
core   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Factors Affecting the Temperature Variation Rate of Bamboo during High-frequency Heating

BioResources, 2023
High-frequency electromagnetic fields refer to electromagnetic waves with frequencies ranging from 100 kHz to 300 MHz. High-frequency medium heating has the advantages of uniform heating, rapid energy consumption, and environmental protection.
Liang Ji, Yanhe Liu, Jianbo Zhou, Yongjie Lei, Haiyun Feng   +4 more
doaj   +2 more sources

The High-Frequency Electromagnetic Fields Generation in the Electromagnetic Strength Testing Experiments. A 'Warm' Plasma Model.

, 1995
: The experiment on electromagnetic strength testing of objects is considered. The high-frequency electromagnetic fields generation as a result of fast electron beam injection into the vacuum chamber is investigated.
Vasil'kov G.D., Skachkov M.V.
core  

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

High frequency coupling model of multi-level transmission lines in power systems with scatterers

电力工程技术
High-frequency electromagnetic fields can couple to overhead transmission lines. When the wavelength of the high-frequency electromagnetic fields is smaller than the height of the transmission lines, the classical transmission line theory is no longer ...
ZHENG Qunshuang, GUO Jun, XIE Weichen, XIE Yanzhao   +3 more
doaj   +1 more source

Fiber‐Format Flexible Linear Electrostatic Motors

Advanced Materials, EarlyView.
A flexible coaxial fibre‐format electrostatic motor enables backdrivable and reversible linear actuation with high force density and functionality under bending, offering a scalable actuation platform for soft and wearable robotics. ABSTRACT Linear motion is fundamental to robotics, yet existing solutions are either rigid electromagnetic motors or ...
Sylvain Schaller, Herbert Shea
wiley   +1 more source

A geometric optics based numerical method for high frequency electromagnetic fields computations near fold caustics - Part I [PDF]

, 2002
This paper presents an Eulerian numerical method for the computation of a bi-valued solution of Hamilton-Jacobi type equation in a particular geometric setting.
Benamou, Jean-David, Sentis, Rémi, Lafitte, Olivier, Solliec, Ian   +3 more
core   +1 more source

A Narrative Review on the Influence of Electromagnetic Fields Below 100 kHz on the Endocrine System

Applied Sciences
Background: Extremely low-frequency electromagnetic fields (ELF-EMFs), generated mainly by power infrastructure and household devices, have raised scientific interest due to their potential impact on the endocrine system.
Piotr M. Tojza, Grzegorz Redlarski, Leszek S. Litzbarski, Mieszko Czaplinski   +3 more
doaj   +1 more source