Results 81 to 90 of about 2,026,776 (294)
A Split Ring Resonator-Based Metamaterial for Microwave Impedance Matching with Biological Tissue
Applied Sciences, 2020 A metamaterial lens based on a split ring resonator (SRR) array has been designed and optimized to improve the focusing and the penetration depth in human biological tissue of a microwave beam irradiated by a substrate integrated waveguide (SIW) cavity ...
Vincenza Portosi +2 more
doaj +1 more source
Sustainable and Multifunctional Natural Macromolecular Polymers for Aqueous Zn Metal Batteries
Advanced Materials, EarlyView.We comprehensively review the structure‐function relationships and regulatory mechanism of natural macromolecular polymers in stabilizing zinc anodes at the microscopic and mesoscopic scales. The interactions among polymer structures, optimization strategies, and regulatory mechanisms are discussed systematically summarizing recent related research ...
Yunuo Shi +13 more
wiley +1 more source
Kresling Origami-Based Metamaterial Robot for Dynamic Electromagnetic Control. [PDF]
Adv Sci (Weinh)A reconfigurable metamaterial system integrates deformable origami units with high‐permittivity ceramic plates. Pneumatic switching between structural states alters local resonance conditions, enabling dynamic radar stealth and adaptive microwave reflection for mobile communication.
Zeng X +13 more
europepmc +2 more sources
Design of high-performance millimeter wave and sub-millimeter wave quasi-optical isolators and circulators [PDF]
, 2007 Faraday rotators using permanently magnetized ferrite materials are used to make quasi-optical isolators and circulators at millimeter wave and sub-millimeter wave frequencies that have far higher performance than their waveguide equivalents.
Goy, P +7 more
core +2 more sources
Direct Observation of Propagating Spin Waves in a Spin Hall Nano‐Oscillator
Advanced Materials, EarlyView.By combining frequency injection locking with time‐resolved scanning transmission x‐ray microscopy (TR‐STXM), the authors image the real‐time magnetization dynamics of a spin Hall nano‐oscillator (SHNO) for the first time. Their results reveal richer dynamics than previously reported and challenge existing assumptions regarding the radiation hardness ...
Victor H. González +12 more
wiley +1 more source
What does the future hold for microwave? Medicine
, 2015 There are certain limitations and problems with using microwave radiation for diagnostic and therapeutic purposes, such as the spatial resolution, the penetration depth, the ability to focus the radiation, and the electromagnetic interference. Radiation,
MARINAKIS, S, Howard,, B
core +1 more source
Fundamental issues in antenna design for microwave medical imaging applications [PDF]
, 2010 This paper surveys the development of microwave medical imaging and the fundamental challenges associated with microwave antennas design for medical imaging applications. Different microwave antennas used in medical imaging applications such as monopoles,
Fernando, Michael +7 more
core +1 more source
Diketopyrrolopyrrole‐Based Cation as a Semiconducting Spacer in Layered Perovskite
Advanced Materials, EarlyView.Diketopyrrolopyrrole cation incorporated layered perovskites exhibiting extended absorption profiles and enhanced charge carrier mobility with type‐II energy alignment. The improved photoconversion efficiency demonstrates the critical role of incorporating organic semiconductors in optimizing layered perovskite performance.
Waygen Thor +8 more
wiley +1 more source
Microwave Devices for Wearable Sensors and IoT. [PDF]
Sensors (Basel), 2023 Costanzo A +5 more
europepmc +1 more source
Ion Concentration and Voltage Imaging With Fluorescent Nanodiamonds
Advanced Materials, EarlyView.We demonstrate reversible switching between the fluorescent NV0 and the dark NV+ state, in sub‐30 nm FNDs via surface oxidation and hydrogenation, respectively. In an electrochemical cell, we show that the fluorescence from hydrogenated particles enables all‐optical imaging of voltages and ion concentrations at the micrometer scale.
Patrick Voorhoeve +8 more
wiley +1 more source