Results 71 to 80 of about 469,155 (339)

Relationship between skin temperature and blood flow during exposure to radio frequency energy: implications for device development

BMC Biomedical Engineering
Background The ST response to high frequency EM heating may give an indication of rate of BF in underlying tissue. This novel method, which we have termed REFLO (Rapid Electromagnetic Flow) has potential for applications such as detection of PAD.
Georgia E. H. Robles, David A. Nelson
doaj   +1 more source

Recent H majority inverted radio frequency heating scheme experiments in JET-ILW

EPJ Web of Conferences, 2017
Inverted 3He and D ion cyclotron minority heating scenarios were recently tested in JET-ILW. They confirm the good heating efficiency at low concentrations of ∼3%. The 3He minority heating scheme is only modestly affected by the change from a carbon (JET-
Van Eester Dirk, Lerche Ernesto, Kazakov Yevgen, Jacquet Philippe, Baranov Yuri, Bobkov Volodymyr, Crombé Kristel, Czarnecka Agata, Dumont Remi, Dumortier Pierre, Eriksson Jacob, Giacomelli Luca, Giroud Carine, Goniche Marc, Hellesen Carl, Kiptily Vasily, Krawczyk Natalia, Koskela Tuomas, Nave Filomena, Nocente Massimo, Ongena Jef, Santala Marko, Salewski Mirko, Schneider Mireille, Weisen Henri   +24 more
doaj   +1 more source

Anomalous Capacitive Sheath with Deep Radio Frequency Electric Field Penetration [PDF]

, 2002
A novel nonlinear effect of anomalously deep penetration of an external radio frequency electric field into a plasma is discribed. A self-consistent kinetic treatment reveals a transition region between the sheath and the plasma.
E. M. Lifshitz, Igor D. Kaganovich, L. D. Landau, S. V. Berezhnoi, V. A. Godyak, Y. P. Raizer   +5 more
core   +3 more sources

Elinvar Materials: Recent Progress and Challenges

Advanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Competing Effects of Radio Frequency Fields on Carbon Nanotube/Resin Systems: Alignment versus Heating

Macromolecular Materials and Engineering, 2023
This work shows that radio‐frequency (RF) fields can simultaneously align carbon nanotubes (CNTs) dispersed in a resin and induce Joule heating to cure the resin.
Anubhav Sarmah, Raymond D. Mee, Kailash Arole, David Chi, Ethan M. Harkin, Smita Shivraj Dasari, Aniela J. K. Wright, Thang Q. Tran, Ankush Rout, Micah J. Green   +9 more
doaj   +1 more source

How to dress radio-frequency photons with tunable momentum

, 2018
We demonstrate how the combination of oscillating magnetic forces and radio-frequency (RF) pulses endows RF photons with tunable momentum. We observe velocity-selective spinflip transitions and the associated Doppler shift.
Jamison, Alan O., Juzeliūnas, Gediminas, Ketterle, Wolfgang, Lee, Jeongwon, Li, Jun-Ru, Shteynas, Boris, Top, Furkan C.   +6 more
core   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

First experiments on RF plasma production at relatively low magnetic fields in the LHD

Nuclear Fusion
The results of the first experimental series to produce a plasma using the radio frequency discharge (RF) above the ion cyclotron frequency at relatively low magnetic fields (0.5–0.6 T) in the Large Helical Device (LHD) are presented 1.43 MW of RF power ...
Yu.V. Kovtun, S. Kamio, V.E. Moiseenko, H. Kasahara, T. Seki, K. Saito, R. Seki, S. Masuzaki, S. Brezinsek, A. Dinklage   +9 more
doaj   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Preferential energization of alpha particles in polar coronal holes at one solar radius above the photosphere

, 2015
Heating of polar coronal holes during solar minimum and acceleration of the fast solar wind issuing therefrom lack comprehensive theoretical understanding.
Bose, M., Chakravarty, Aniruddha
core   +1 more source