Results 31 to 40 of about 5,295 (187)

Near‐Infrared Light‐Programmable Negative Differential Transconductance in Organic Electrochemical Transistors for Reconfigurable Logic

Advanced Functional Materials, EarlyView.
Organic electrochemical transistors based on a Near‐Infrared (NIR)‐responsive polymer p(C4DPP‐T) and iodide electrolyte exhibit optically programmable negative differential transconductance. NIR illumination triggers an iodine‐mediated redox process, enabling a transition from binary to ternary conductance states within a single‐layer device.
Debdatta Panigrahi, Christina J. Kousseff, Aristea Pavlou, Zeinab Hamid, Iain McCulloch, Fabrizio Torricelli, Paul W. M. Blom, Paschalis Gkoupidenis   +7 more
wiley   +1 more source

Study Method of the P&O Algorithm using Pulse Width Modulation and Duty Cycle Modulation: Application to the search for the Maximum Power Point of PV Systems

International Transactions on Electrical Engineering and Computer Science
 In this paper, we make a comparative study of the P&O algorithm using pulse width modulation (PWM) and duty cycle modulation (DCM) for the control of DC/DC converters used for the search of the maximum power point of photovoltaic systems. The converter
Theodore Louossi, Kitmo, F. N. Gildas Armel, Nanfak Arnaud, Doka Baza Gilbert, Hamda Marcel Soulouknga, Fatima T. Ahmed   +6 more
doaj   +1 more source

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

Advanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi, Daniele Zucchelli, Zeinab Hamid, Christina Kousseff, Arup Sarkar, Aristea Pavlou, Zhitian Ling, Somayeh Kashani, Iain McCulloch, Paul W. M. Blom, Fabrizio Torricelli, Paschalis Gkoupidenis   +11 more
wiley   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

Hybrid Multi-Carrier PWM Technique Based on Carrier Reconstruction for Cascaded H-bridge Inverter

IEEE Access, 2019
In response to the deficiencies that the Carrier Phase Shift (CPS-PWM) and Carrier In-Phase Disposition (IPD-PWM) modulation techniques are applied to Cascaded H-bridge (CHB) multilevel inverters, combined with the advantages of the two techniques, a ...
Manyuan Ye, Le Chen, Lixuan Kang, Song Li, Junfei Zhang, Han Wu   +5 more
doaj   +1 more source

A Hybrid PWM Technique to Improve the Performance of Voltage Source Inverters

IEEE Access, 2023
Due to the rapid advancement of power semiconductor devices, the use of voltage source inverters (VSIs) has gained widespread acceptance. As a consequence, the performance of the voltage source inverter has emerged as a critical aspect that is highly ...
Arif Ahmed, Shuvra Prokash Biswas, Md. Shamim Anower, Md. Rabiul Islam, Sudipto Mondal, S. M. Muyeen   +5 more
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

A Novel Region-Refinement Pulse Width Modulation Method for Torque Ripple Reduction of Brushless DC Motors

IEEE Access, 2019
Brushless dc motors (BLDCMs) exhibit relatively large torque ripple due to the current pulsation during the commutation process. In this paper, first, the production mechanism of the commutation torque ripple is analyzed in detail, where the diode ...
Kai Liu, Zhiqiang Zhou, Wei Hua
doaj   +1 more source

Fabric‐Based Wearable Robotic Exoskeleton Gloves: Advancements and Challenges

Advanced Materials Technologies, EarlyView.
This review highlights interdisciplinary technological advances in fabric‐based robotic gloves, focusing on progress in design, fabrication, actuation, sensing, control, and power and energy requirements. It also addresses performance testing and validation, including biomechanical, strength, functional, user experience, and durability assessments, to ...
Ayse Feyza Yilmaz, Gökhan Ince, Ozgur Atalay   +2 more
wiley   +1 more source

Comparative study of single-phase multilevel cascaded transformerless inverters with different modulation methods

Engineering Science and Technology, an International Journal
This paper presents an in-depth exploration of a single-phase multilevel cascaded H5 (CH5) transformerless inverter employing both phase-shifted PWM (PS-PWM) and level-shifted PWM (LS-PWM) methodologies.
Hakki Mollahasanoglu, Merve Mollahasanoglu, Emre Ozkop   +2 more
doaj   +1 more source