Results 101 to 110 of about 195,565 (345)

Multimode Adaptive Thermoregulation Enabled by Shape Morphing and Radiative Cooling Porous Polyurethane

Advanced Engineering Materials, EarlyView.
A shape‐morphing, porous polyurethane film combines passive radiative cooling with folding to deliver multilevel heating‐and‐cooling control. High solar reflectance and midinfrared emissivity keep surfaces up to 3.5 °C cooler in direct sunlight, while photothermal triggering folds the film to absorb solar heat.
Yoon Young Choi, Songtao Tang, Ho Kun Woo, Kai Zhou, Pranto Karua, Lili Cai   +5 more
wiley   +1 more source

Highly Stable Low‐Temperature Phosphate Glass as a Platform for Multimaterial 3D Printing of Integrated Functional Microfluidic Devices

Advanced Engineering Materials, EarlyView.
A highly stable, low‐temperature phosphate glass is developed for multimaterial additive manufacturing of multifunctional microfluidics. Glass, metal conductors, and sacrificial polymer are coprinted, enabling monolithic fabrication. The sacrificial paste forms precise channels and decomposes during sintering.
Babak Mazinani, Mustafa M. Fadlelmula, Vivek Subramanian   +2 more
wiley   +1 more source

On wave-driven propulsion

Journal of Fluid Mechanics
A theory is presented for wave-driven propulsion of floating bodies driven into oscillation at the fluid interface. By coupling the equations of motion of the body to a quasipotential flow model of the fluid, we derive expressions for the drift speed and propulsive thrust of the body which in turn are shown to be consistent with global momentum ...
Benham, Graham, Devauchelle, Olivier, Thomson, Stuart   +2 more
openaire   +3 more sources

Enhanced Mechanical and Shape Memory Properties of Laser Direct Energy Deposited CoCrFeMn High Entropy Alloy by Carbon Addition

Advanced Engineering Materials, EarlyView.
Feasibility of improving the mechanical and shape‐memory properties of a CoCrFeMn high‐entropy alloy through carbon addition is investigated. The recovery strain of the carbon‐containing alloy is approximately four to five times higher than that of the carbon‐free alloy.
Minsu Park, Jiyoung Park, Haeju Jo, Dohyung Kim, Wookjn Lee   +4 more
wiley   +1 more source

Electric Machine Design and Integration for an Electric Propulsion System in Medium-Altitude Long-Endurance Unmanned Aerial Vehicles

Applied Sciences
Unmanned Aerial Vehicles (UAVs) are increasingly used in both civilian and military applications around the world. There are several types of UAVs with classifications according to several quantities.
Emre Kurt, Ahmet Yigit Arabul, Fatma Keskin Arabul, Ibrahim Senol   +3 more
doaj   +1 more source

A quantum propulsion method [PDF]

, 2019
Experimental proof of concept for a new propulsion method is presented. Ammonia gas (NH3) is exposed to a strong electric field aiming to align the orientation of the polar molecules. This results in partial alignment of the quantum tunneling of nitrogen atoms, specific for the ammonia, creating bias in the pressure distribution and a resultant force ...
openaire   +2 more sources

Internal Temperature Evolution Metrology and Analytics in Li‐Ion Cells

Advanced Functional Materials, EarlyView.
This study investigates the non‐linear evolution of internal temperatures across diverse operating conditions, highlighting the disparities between internal and external measurements and the resulting thermal asymmetries. The coupled thermo‐electrochemical modeling framework provides a comprehensive analysis of various heat generation modes, examining ...
Anuththara S. J. Alujjage, Bairav S. Vishnugopi, Avijit Karmakar, David P. Magee, Yevgen Barsukov, Partha P. Mukherjee   +5 more
wiley   +1 more source

Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
By leveraging the unique combination of polarization direction and loading state, ultrahigh piezoelectricity is achieved through careful tuning of the relative density and scaling ratio in truss‐based ferroelectric metamaterials. This approach enables the simultaneous realization of extremely high piezoelectric constants and ultralow dielectric ...
Jiahao Shi, Kang Ju, Haoyu Chen, Valérie Orsat, Agus P. Sasmito, Ali Ahmadi, Abdolhamid Akbarzadeh   +6 more
wiley   +1 more source

Effect of Feedback on Foot Strike Angle and Forward Propulsion in People With Stroke

IEEE Transactions on Neural Systems and Rehabilitation Engineering
Effective retraining of foot elevation and forward propulsion is essential in stroke survivors’ gait rehabilitation. This study aimed to investigate the effect of providing real-time feedback on foot strike angle (FSA) and forward propulsion in ...
Carmen J. Ensink, Cheriel J. Hofstad, Rene van Ee, Noel L. W. Keijsers   +3 more
doaj   +1 more source

Wearable Haptic Feedback Interfaces for Augmenting Human Touch

Advanced Functional Materials, EarlyView.
The wearable haptic feedback interfaces enhance user experience in gaming, social media, biomedical instrumentation, and robotics by generating tactile sensations. This review discusses and categorizes current haptic feedback interfaces into force, thermal, and electrotactile stimulation‐based haptic feedback interfaces, elucidating their current ...
Shubham Patel, Zhoulyu Rao, Maggie Yang, Cunjiang Yu   +3 more
wiley   +1 more source