Results 41 to 50 of about 6,531 (191)

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

A Ubiquitous GNSS-R Methodology to Estimate Surface Reflectivity Using Spinning Smartphone Onboard a Small UAS

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Global Navigation Satellite Systems (GNSS) Reflectometry (GNSS-R) has gained significant attention in retrieving geophysical parameters of the Earth's surface using ground, airborne, and spaceborne systems in the past decade.
Md Mehedi Farhad, Mehmet Kurum, Ali Cafer Gurbuz   +2 more
doaj   +1 more source

Thin and Compact Versus Thick and Porous Fouling Layers in the Emulsion Polymerization of Acrylates and Vinyl Acetates Studied In Situ With a Quartz Crystal Microbalance (QCM)

Journal of Applied Polymer Science, EarlyView.
ABSTRACT Building on a quartz crystal microbalance with dissipation monitoring (QCM‐D), fouling in emulsion polymerization was compared between acrylate dispersions stabilized with a mobile, anionic surfactant and dispersions of poly(vinyl acetate‐co‐vinyl neodecanoate), PVAc, stabilized with polyvinyl alcohol, PVOH.
K. M. Hoffmann, O. Sidorow, W. Augustin, S. Scholl, A. Langhoff, D. Johannsmann   +5 more
wiley   +1 more source

Magnetron Sputtering Synthesis of La‐Doped BiFeO3 Thin Films and Enhanced Exchange Bias in CoFeB/Bi1‐xLaxFeO3 Heterostructures

Advanced Physics Research, EarlyView.
This study explores the epitaxial growth of high‐quality La‐doped BiFeO3 (BLFO) thin films at 550 °C using magnetron sputtering. The films exhibit good ferroelectric properties and low leakage current. A BLFO/CoFeB heterostructure is constructed, achieving an exchange bias field exceeding the coercive field at room temperature.
Zhiqin Zhou, Ligang Bai, Chen Qi, Xiaoyang Lin, Ivair Aparecido dos Santos, Gustavo Sanguino Dias, Luiz Fernanado Cótica, Weisheng Zhao, Yanxue Chen, Tianxiao Nie, Guodong Wei   +10 more
wiley   +1 more source

Can GNSS-R Detect Abrupt Water Level Changes?

Remote Sensing, 2020
Global navigation satellite system reflectometry (GNSS-R) uses signals of opportunity in a bi-static configuration of L-band microwave radar to retrieve environmental variables such as water level.
Sajad Tabibi, Olivier Francis
doaj   +1 more source

CO2 Fluxes and Soil Responses to Straw and Herbicide in Peanut

Land Degradation &Development, EarlyView.
ABSTRACT Peanut cultivation plays an important agronomic role in Brazil, especially in rotation with sugarcane, promoting biological nitrogen fixation and improving soil quality. This study aimed to test the hypothesis that the combined use of sugarcane mulch, peanut cultivation, and herbicide application would affect soil CO₂ fluxes, soil chemical ...
Heytor Lemos Martins, Vitor Adriano Benedito, Arianis Ibeth Santos‐Nicolella, Treyce Stephane Cristo Tavares, Rodrigo Baratiere Perim, Vanesca Korasaki, Newton La Scala Jr., Pedro Luís da Costa Aguiar Alves   +7 more
wiley   +1 more source

Electronic depth profiles with atomic layer resolution from resonant soft x-ray reflectivity

New Journal of Physics, 2015
The analysis of x-ray reflectivity data from artificial heterostructures usually relies on the homogeneity of optical properties of the constituent materials.
M Zwiebler, J E Hamann-Borrero, M Vafaee, P Komissinskiy, S Macke, R Sutarto, F He, B Büchner, G A Sawatzky, L Alff, J Geck   +10 more
doaj   +1 more source

Investigation of Side Wall Roughness Effect on Optical Losses in a Multimode Si₃N₄ Waveguide Formed on a Quartz Substrate

Photonics, 2020
This article presents the results of the study of the influence of the most significant parameters of the side wall roughness of an ultra-thin silicon nitride lightguide layer of multimode integrated optical waveguides with widths of 3 and 8 microns. The
Anastasia Yakuhina, Alexey Kadochkin, Vyacheslav Svetukhin, Dmitry Gorelov, Sergey Generalov, Vladimir Amelichev   +5 more
doaj   +1 more source

Solution to Fault of Multi-Terminal DC Transmission Systems Based on High Temperature Superconducting DC Cables

Energies, 2021
In this paper, we developed the small-signal state-space (SS) model of hybrid multi-terminal high-voltage direct-current (HVDC) systems and fault localization method in a failure situation.
Chun-Kwon Lee, Gyu-Sub Lee, Seung-Jin Chang   +2 more
doaj   +1 more source

Automated Photothermal Control of Block Copolymer Self‑Assembly and Metal Oxide Nanostructures Sintering

Macromolecular Rapid Communications, EarlyView.
This study presents a microscope‐based photothermal platform that integrates structured laser light projection with machine‐learning‐optimized illumination. By employing neural‐network models to predict and generate thermal profiles, the platform achieves precise thermal processing of block copolymer films.
Filip Franciszek Powala, Piotr Szustakiewicz, Przemyslaw Pula, Pawel Wawrzyniec Majewski   +3 more
wiley   +1 more source