Results 51 to 60 of about 111,678 (310)

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

SELECTION OF METHOD FOR REGULATION OF TRACTOR PROPULSION ASYNCHRONOUS ELECTRIC MOTOR AND CONSTRUCTION OF MECHANICAL CHARACTERISTICS

open access: yesНаука и техника, 2015
Nowadays the work is in progress to develop wheeled and caterpillar tractors with electromechanical transmission. Range of changes in transmission gear ratio while using propulsion electric motor depends on mechanical characteristics of a tractor ...
Ch. I. Zhdanovich, N. V. Kalinin
doaj  

Feasibility Analysis on Electric Transformation of SW1 Unmanned Aerial Vehicle

open access: yesHangkong gongcheng jinzhan, 2020
Electric aircraft is booming in the field of general aviation at home and abroad, and affects the future development direction of aviation. Using electric propulsion technology to transform unmanned aerial vehicle(UAV) can greatly improve the safety ...
ZOU Ning   +3 more
doaj   +1 more source

Photoswitching Conduction in Framework Materials

open access: yesAdvanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez   +4 more
wiley   +1 more source

Ground Joint Debugging Test System of Electric Propulsion System for Ocean Trawler

open access: yesKongzhi Yu Xinxi Jishu, 2017
There are no standards of ground joint debugging test method for ship electric propulsion system at present, and different test items apply to different ship electric propulsion system projects, which give rise to uncertainty of adequate validation.
LU Xiulong   +4 more
doaj  

Performance Characteristics of Turkey’s First 1,5 kW Hall Thruster Electric Propulsion System

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2020
Due to significant advantages and successful applications, electric propulsion has become a key technology for both scientific and commercial space missions.
Demet Ulusen   +7 more
doaj  

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling   +7 more
wiley   +1 more source

An Energy Efficiency Optimization Method for Fixed Pitch Propeller Electric Aircraft Propulsion Systems

open access: yesIEEE Access, 2019
As a key component of electric aircrafts, electric propulsion systems provide sufficient thrust for electric aircrafts. By improving its efficiency, the power consumed by the electric propulsion system can be reduced.
Shuli Wang, Shuo Zhang, Shaohua Ma
doaj   +1 more source

A Surface‐engineered Microfluidic Device for Antibody‐Mediated Negative Selection of High‐Quality Sperm for Assisted Reproduction

open access: yesAdvanced Functional Materials, EarlyView.
This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi   +5 more
wiley   +1 more source

Advanced Design of Naval Ship Propulsion Systems Utilizing Battery-Diesel Generator Hybrid Electric Propulsion Systems

open access: yesJournal of Marine Science and Engineering
As advanced sensors and weapons require high power, naval vessels have increasingly adopted electric propulsion systems. This study aims to enhance the efficiency and operability of electric propulsion systems over traditional mechanical propulsion ...
Youngnam Park, Heemoon Kim
doaj   +1 more source

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