Results 131 to 140 of about 6,734,093 (295)
Advanced Science, EarlyView.Mesoporous mixed ionic‐electronic PU/PEDOT: PSS electrodes enable label‐free detection of stochastic extracellular bioelectrical dynamics in living Phaeodactylum tricornutum. Living diatoms actively modulate interfacial ionic dynamics, establishing stochastic electrochemical noise as a sensitive probe of microbial bioelectrochemical activity and a new ...
David M. S. Silva +7 more
wiley +1 more source
High-Power DC/DC Converter and DC/AC Inverter
This project presents the design and analysis of a two-stage power conversion system intended to interface a fuel cell source with an AC load. The first stage consists of an isolated forward DC/DC converter that steps the fuel cell output voltage from ...
Silva, Nicholas +3 more
core +1 more source
Power electronic transformers for AC-AC and AC-DC conversion with reduced number of switches
, 2013 University of Minnesota Ph.D. dissertation. August 2013. Major:Electrical Engineering. Advisor: Professor Ned Mohan. 1 computer file (PDF); xii, 139 pages, appendices A-E.In this research, a novel reduced-switch Power Electronic Transformer is proposed ...
Castelino, Gysler Fatima
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Advanced Science, EarlyView.Freestanding hierarchical‐porous BCZT thin films integrate a compliant porous surface with a dense piezoceramic backbone to balance mechanical reliability, voltage sensitivity, and acoustic coupling. The films enable stable wearable pulse‐wave monitoring and enhanced tissue‐coupled ultrasonic energy harvesting, offering a promising route toward soft ...
Zifan Li +14 more
wiley +1 more source
, 2010 Power electronic technology is very popular and useful in modern electrical engineering. Especially, dc/ac conversion and ac/dc conversion are widely utilized in industrial application.
Zhao, Ying.
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Advanced Science, EarlyView.This paper reveals internal resonance mismatch‐controlled dissipative bistability collapse in a coupled micromechanical resonator. Tuning δIR changes both internal‐mode amplitude and phase‐dependent feedback. For negative mismatch, Duffing bistability survives.
Jianlin Chen +4 more
wiley +1 more source
Advanced Science, EarlyView.Oxygen plasma functionalizes porous polyethylene, enabling complete hydrocarbon ionomer infiltration within a dense submicron pore network. The resulting reinforced composite membrane simultaneously enhances mechanical robustness and suppresses hydrogen permeation at ultrathin thickness. An integrated performance index confirms the effectiveness of the
Sungjun Kim +6 more
wiley +1 more source
An unity power factor AC-DC-AC- converter for wind power application
, 2017 Wind turbine power efficiency and output parameters are mainly decided by wind turbine type and inverter/converter used in the circuit. A suitable variable speed wind turbine increase the power efficiency significantly compared with fixed speed wind ...
Liu, Xu
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Advanced Science, EarlyView.Intrinsically stretchable OECTs enable bifunctional operations via gate engineering. Polarizable Ag/AgCl gates provide volatile sensing, while Au gates enable non‐volatile memory. The SEBS‐blended channel maintains performance under strain, supporting reliable signal transduction.
Jiyong Yoon +8 more
wiley +1 more source
A New Dual-Purpose Flyback-based DC-DC/AC Converter with Dynamic Voltage Gain
It is envisioned that in the near future, a hybrid operation between DC and AC systems may be observed. Hence, this paper proposes a new DC-DC/AC flyback-based power converter with the least number of components featuring a dynamic voltage conversion ...
Abbasi, M +6 more
core +1 more source