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Tripod transcranial alternating current stimulation at 5-Hz to alleviate anxiety symptoms: A preliminary report.
J Affect Disord
September 2024
The NeuroCognitive Institute (NCI) Clinical Research Foundation, NJ 07856, USA. Electronic address:
Introduction: One of the most common applications of transcranial electrical stimulation (tES) at low current intensity is to induce a relaxed state or reduce anxiety. With technical advancement, different waveforms, montages, and parameters can be incorporated into the treatment regimen. We developed a novel protocol to treat individuals with anxiety disorders by transcranial alternating current stimulation (tACS).
View Article and Find Full Text PDFUltra-Low Current 10 nm Spin Hall Nano-Oscillators.
Adv Mater
February 2024
Physics Department, University of Gothenburg, Gothenburg, 412 96, Sweden.
Nano-constriction based spin Hall nano-oscillators (SHNOs) are at the forefront of spintronics research for emerging technological applications, such as oscillator-based neuromorphic computing and Ising Machines. However, their miniaturization to the sub-50 nm width regime results in poor scaling of the threshold current. Here, it shows that current shunting through the Si substrate is the origin of this problem and studies how different seed layers can mitigate it.
View Article and Find Full Text PDFFloquet Engineering the Exceptional Points in Parity-Time-Symmetric Magnonics.
Phys Rev Lett
November 2023
Institut für Physik, Martin-Luther Universität Halle-Wittenberg, 06099 Halle/Saale, Germany.
Magnons serve as a testing ground for fundamental aspects of Hermitian and non-Hermitian wave mechanics and are of high relevance for information technology. This study presents setups for realizing spatiotemporally driven parity-time- (PT) symmetric magnonics based on coupled magnetic waveguides and magnonic crystals. A charge current in a metal layer with strong spin-orbit coupling sandwiched between two insulating magnetic waveguides leads to gain or loss in the magnon amplitude depending on the directions of the magnetization and the charge currents.
View Article and Find Full Text PDFFabrication of Single-Particle Microelectrodes and Their Electrochemical Properties.
ACS Appl Mater Interfaces
May 2022
Guangdong Key Laboratory for Hydrogen Energy Technologies; School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China.
Compared with traditional centimeter-level electrodes, microelectrodes exhibit a small reaction area, high sensitivity, fast mass transfer rate, and low polarization current. However, current microelectrode preparation processes are very complicated and costly. Herein, we proposed a facile and universal method for fabricating single-particle microelectrodes.
View Article and Find Full Text PDFCan low-intensity tACS genuinely entrain neural activity in vivo?
Brain Stimul
January 2021
Neuroscience Center Zurich, Switzerland; Decision Neuroscience Lab, Department of Health Sciences and Technology, ETH Zurich, Switzerland. Electronic address:
Transcranial alternating current stimulation (tACS) was introduced about a decade ago as a non-invasive brain stimulation method to modulate neural oscillations in a relatively safe manner in humans. However, the possibility to induce genuine neural entrainment with low current intensities has been questioned. In a recent study, Johnson and colleagues provide direct evidence for the efficacy of low-intensity tACS to induce neural entrainment in awake monkeys.
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