Results 121 to 130 of about 154,568 (359)

Photo‐Switching Thermal and Lithium‐Ion Conductivity in Azobenzene Polymers

Advanced Functional Materials, EarlyView.
Light‐responsive azobenzene polymers control thermal and ionic transport simultaneously through structural transitions. UV illumination disrupts π–π stacking, converting crystalline trans states to amorphous cis configurations. Thermal conductivity drops from 0.45 to 0.15 W·m−1·K−1 while Li+ diffusivity increases 100 fold. This dual transport switching
Jaeuk Sung, Jungwoo Shin, Qiujie Zhao, Minjee Kang, Christopher Evans, Cecilia Leal, Paul V. Braun, David G. Cahill   +7 more
wiley   +1 more source

Proposing a new rotating frame‐based method for dynamic modelling of resonant converters

IET Power Electronics
Resonant converters are widely used in various industrial applications due to features such as wide input voltage range, high efficiency, and high‐power density. Mathematical modelling of these converters is crucial because they simultaneously exhibit AC
Ahmad Abbasi, Abbas Ghayebloo
doaj   +1 more source

A UAV Intelligent System for Greek Power Lines Monitoring. [PDF]

Sensors (Basel), 2023
Tsellou A, Livanos G, Ramnalis D, Polychronos V, Plokamakis G, Zervakis M, Moirogiorgou K.   +6 more
europepmc   +1 more source

Application of digital control to a magnetic model suspension and balance model [PDF]

The feasibility of using a digital computer for performing the automatic control functions for a magnetic suspension and balance system (MSBS) for use with wind tunnel models was investigated.
Covert, E. E., Haldeman, C. W., Luh, P. B., Whitaker, H. P.   +3 more
core   +1 more source

Mechanotransducing Organic Electrochemical Diode for Crosstalk‐Inhibited Artificial Skin

Advanced Functional Materials, EarlyView.
An innovative approach is presented to a stretchable mechanotransducing diode that unifies rectification and tactile‐sensing functionality. This approach enables to fabricate the diode that maintains a large rectification ratio (5 × 102) at a high operational frequency (100 Hz).
Taeyeong Kim, Seunggoo Baek, Garrett Lecroy, Hyeongseok Choi, Wonjeong Suh, Woosung Cho, Alberto Salleo, Unyong Jeong   +7 more
wiley   +1 more source

A Novel Phase‐Shifted Modulation for Balancing Current Stress During Startup of High‐Power Full‐Bridge DC/DC Converters

The Journal of Engineering
Traditional duty‐cycle or phase‐shift modulation is inadequate for achieving a balanced current‐stress distribution during the startup of full‐bridge DC/DC converters. As converter power capacity increases, these limitations not only restrict the startup
Yiqing Ma, Yi Lu, Xueyin Zhang, Peng Qiu, Qian Chen   +4 more
doaj   +1 more source

Triboelectric nanogenerators as wearable power sources and self-powered sensors. [PDF]

Natl Sci Rev, 2023
Pu X, Zhang C, Wang ZL.
europepmc   +1 more source

Synchronized Electro‐Chromo‐Emissive Devices Using a Mixed Ionic‐Electronic Conductive Layer for XR Applications

Advanced Functional Materials, EarlyView.
A single cell type Electro‐chromo‐emissive (ECECL) device integrating synchronized electrochromic (EC) and electrochemiluminescent (ECL) functions is developed using a mixed ionic‐electronic conductor (MIEC). A MIEC layer reduces ionic/electronic resistance, enabling ultrafast switching and enhanced optical contrast.
Hwandong Jang, Sienoh Park, Won‐Jae Joo, Jinbo Kim, Nori Kobayashi, Eunkyoung Kim   +5 more
wiley   +1 more source

Quasi square wave operation of modular multilevel converter based dual active bridge DC–DC converter with inductor energy recovery

IET Power Electronics
The modular multilevel DC–DC transformer (MMDCT) provides a reliable solution to overcome the challenges of conventional dual‐active‐bridge converters in terms of power semiconductors ratings and dv/dt stress on transformer coupling windings.
Peizhou Xia, Chuantong Hao, Paul Judge, Michael Merlin, Stephen Finney   +4 more
doaj   +1 more source

Final Results for the GRC Supporting Technology Development Project for the 110-Watt Stirling Radioisotope Generator (SRG110) [PDF]

From 1999 to 2006, the NASA Glenn Research Center (GRC) supported the development of a high-efficiency, nominal 110-We Stirling Radioisotope Generator (SRG110) for potential use on NASA missions, including deep space missions, Mars rovers, and lunar ...
Schreiber, Jeffrey G., Thieme, Lanny G.
core   +1 more source