Results 41 to 50 of about 2,678,759 (230)

A rapid evaluation method for propulsion and aerodynamic characteristics and stall characteristics of distributed electric propulsion UAV

Xibei Gongye Daxue Xuebao
A distributed electric propulsion (DEP) aircraft can achieve its ultra-short takeoff and landing distance by utilizing the coupling effect of distributed propellers and wing surface to increase lift.
ZONG Jia, ZHOU Zhou, SHAO Zhuang, LI Minghao, ZHU Jinhong   +4 more
doaj   +1 more source

Design Exploration for Sustainable Regional Hybrid-Electric Aircraft: A Study Based on Technology Forecasts

Aerospace, 2023
The environmental impact of aviation in terms of noise and pollutant emissions has gained public attention in the last few years. In addition, the foreseen financial benefits of an increased energy efficiency have motivated the transport industry to ...
Valerio Marciello, Mario Di Stasio, Manuela Ruocco, Vittorio Trifari, Fabrizio Nicolosi, Markus Meindl, Bruno Lemoine, Priscilla Caliandro   +7 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

Advanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalinin, Long‐Qing Chen, Dean R. Evans, Venkatraman Gopalan   +5 more
wiley   +1 more source

Trends in Flight-Operated Small-Satellite Propulsion Technologies

Applied Sciences
The development and execution of prospective inner and outer space missions require focusing on the use of many small space vehicles operating in swarms with multiple informational, navigational, and mission-oriented interactions among themselves.
Andrei Shumeiko, Daria Fedorova, Denis Egoshin, Vadim Danilov   +3 more
doaj   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

Advanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang, Soumyajit Mojumder, Elo Overgaard Mogensen, Oriol Gavalda‐Diaz, Zihe Li, Shitong Zhou, Ajeet Kumar, James Roscow, Hamideh Khanbareh, Astri Bjørnetun Haugen, Florian Bouville   +12 more
wiley   +1 more source

Impact of propeller arrangement on aerodynamic performance for a high-lift distributed propulsion system

Engineering Applications of Computational Fluid Mechanics
Distributed electric propulsion is an emerging research topic, with a key advantage being its potential for enhanced lift performance through aerodynamic propeller-wing interactions.
Suqi Chen, Zheng Guo, Duoneng Liu
doaj   +1 more source

A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles [PDF]

, 2010
For Electric Vehicles (EV), the charger is one of the main technical and economical weaknesses. This paper focuses on an original electric drive [1]-[3] dedicated to the vehicle traction and configurable as a battery charger without need of additional ...
BOUCHEZ, Boris, E. Semail, DE SOUSA, Luis, A. Bruyere, KESTELYN, Xavier, P. Sandulescu, SEMAIL, Eric, SANDULESCU, Paul, B. Bouchez, X. Kestelyn, BRUYERE, Antoine, L. De Sousa   +11 more
core   +1 more source

Simultaneous Enhancement of Performance and Stability in Dual‐Gate a‐IGZO Thin‐Film Transistors via Single‐Step Laser Annealing for Capacitor‐Less DRAM

Advanced Functional Materials, EarlyView.
A single‐step laser annealing strategy is presented for dual‐gate a‐IGZO TFTs. The steep thermal gradient induces graded oxygen doping in the channel and simultaneous WOx removal at the contacts, enabling concurrent interface and contact engineering.
Sihyeon Kwon, Junil Kim, Geuntae Park, Minseok Kim, Woohyun Hwang, Wanki Kim, Daewon Ha, Byeongmoon Lee, Jae Eun Jang, Hyuk‐Jun Kwon   +9 more
wiley   +1 more source