Results 51 to 60 of about 883 (219)

Ferroelectric Polarization Enabled Threshold Voltage Modulation in High Electron Mobility Transistor

Advanced Functional Materials, EarlyView.
A comprehensive model is developed to capture the coupled electrostatics of a ferroelectric capacitor and a metal‐insulator‐semiconductor high electron mobility transistor (MISHEMT) connected in ferroelectric‐metal high electron mobility transistor (FeMHEMT) configuration.
Wentian Gao, Andre Wachowiak, Thomas Mikolajick, Uwe Schroeder, Roberto Guido   +4 more
wiley   +1 more source

Two efficient three‐mode control strategies for four‐switch buck‐boost converters

IET Power Electronics
The bidirectional DC‐DC conversion, as an important application scenario, places certain requirements on the topology structure. The four‐switch buck‐boost (FSBB) converter has received widespread attention due to its simple structure, flexible control ...
Da Zhang, Yu Gu, Donglai Zhang, Xiaofeng Zhang, Haijin Li, Anshou Li   +5 more
doaj   +1 more source

Unusual Temperature‐Enhanced Bulk Photovoltaic Effect Beyond the Centrosymmetric Phase in CuCrP2S6 van der Waals Crystals

Advanced Functional Materials, EarlyView.
Contrary to conventional expectations, the bulk photovoltaic effect in CuCrP2S6 is enhanced rather than suppressed upon transitioning into the crystallographically centrosymmetric phase. Dynamic Cu‐ion disorder creates transient polar states, which substantially amplifies zero‐bias photocurrent (shift‐current) generation, establishing dynamic symmetry ...
Ryoga Murata, Takao Sasagawa
wiley   +1 more source

A novel bidirectional DC–DC converter with high voltage conversion ratio and capability of cancelling input current ripple

IET Power Electronics
This paper proposes a novel bidirectional DC–DC converter with high voltage conversion ratio and capability of cancelling input current ripple. The proposed converter uses two coupled inductors and switched‐capacitor circuit to increase the voltage ...
Kazem Farajzadeh, Leila Mohammadian, Sima Shahmohammadi, Taher Abedinzadeh   +3 more
doaj   +1 more source

Interaction‐Driven Assembly Pathways in Heterogeneous Active Microrobotic Systems

Advanced Functional Materials, EarlyView.
Peanut‐ and cube‐shaped light‐powered microrobots exhibit distinct magnetic and photocatalytic responses that determine their heterogeneous self‐assembly. In the dark, magnetic dipole interactions drive colloidal copolymerization with cubes acting as nucleation centers, whereas under light irradiation, phoretic interactions compete with magnetic ...
Domenico Calabrò, Roshan Velluvakandy, Martin Pumera, Francesco Priolo, Salvo Mirabella, Mario Urso   +5 more
wiley   +1 more source

A high step‐up coupled‐inductor‐based dc‐dc converter with a wide duty cycle range and improved gain‐to‐element ratio

IET Power Electronics
Most high‐gain step‐up dc‐dc structures operate with a limited duty cycle and suffer from a high component count, limiting their application. This paper addresses these problems by proposing a new step‐up dc‐dc converter that provides a high conversion ...
Mostafa Karimi Hajiabadi, Alireza Lahooti Eshkevari, Iman Abdoli, Ali Mosallanejad, Ahmad Salemnia   +4 more
doaj   +1 more source

An Electrowetting Pump

Advanced Functional Materials, EarlyView.
A tubular electrowetting pump moves alternating droplets through a millimeter‐wide channel in discrete, reversible steps, functioning as a fluidic stepper motor. With no moving parts and electrodes insulated from the liquid, it delivers silent, accurate flow. Flexibility allows the pump to be woven directly into textiles for wearable, medical, and soft‐
Robert Hennig, Herbert Shea
wiley   +1 more source

Comparative analysis of three‐phase dual active bridge converter with different transformer topology and modern universal control for DC microgrids

IET Power Electronics
The presented work discusses issues related to the use of modern multiphase topologies of Dual Active Bridge (DAB)‐type converters. Converters of this type are widely used in most DC microgrid applications.
Serafin Bachman, Marek Turzyński, Marek Jasiński   +2 more
doaj   +1 more source

Wearable Kirigami‐Apertured Capacitive Sensors for Continuous Cardiac Volumetric Monitoring

Advanced Functional Materials, EarlyView.
A wearable kirigami‐apertured carbon nanotube‐paper composite (K‐CPC) capacitive sensor enables cardiac volumetric monitoring. The kirigami process creates a central aperture with cantilevered fibers that confine the electric field, enhancing both sensitivity and lateral resolution.
Yu‐Jen Cheng, Shawn Kim, Jonathan Avery, Younghoon Kwon, Jae‐Hyun Chung   +4 more
wiley   +1 more source

An improved auxiliary circuit for IPT systems to achieve inherent CC‐to‐CV transition and load fault‐tolerant operation

IET Power Electronics
Three‐coil inductive power transfer (IPT) charging system can not only achieve inherent constant current (CC) to constant voltage (CV) transition but also tolerate load open‐circuit.
Sheng Ren, Ping Yang, Xiaoqiang Wang, Jianping Xu   +3 more
doaj   +1 more source