Results 121 to 130 of about 491,279 (390)

Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials

open access: yesAdvanced 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   +6 more
wiley   +1 more source

Electric and hybrid vehicle system R/D [PDF]

open access: yes
The work being done to characterize the level of current propulsion technology through component testing is described. Important interactions between the battery and the propulsion system will be discussed.
Schwartz, H. J.
core   +1 more source

Photonic spin control for solar wind electric sail

open access: yes, 2013
The electric solar wind sail (E-sail) is a novel, efficient propellantless propulsion concept which utilises the natural solar wind for spacecraft propulsion with the help of long centrifugally stretched charged tethers.
Janhunen   +4 more
core   +1 more source

The new Turbo Wing – TW propulsion for VTOL aircraft [PDF]

open access: yesINCAS Bulletin
This paper relates about to a new class of propulsion systems named Turbo Wing- TW for VTOL aircraft (including civil and military drones). The idea behind this concept is to fully integrate a propulsion system into a wing structure, so that the aircraft
Liviu Grigorian GIURCA
doaj   +1 more source

Wearable Haptic Feedback Interfaces for Augmenting Human Touch

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Research in rocket and jet propulsion [PDF]

open access: yes, 1950
When considering the problems of basic research in rocket and jet propulsion, it is profitable to keep in mind the salient features of rocket- and jet-propulsion engineering.
Tsien, Hsue-Shen
core  

Versatile Selective Soldering via Molten Metal Printing for Heat‐Sensitive 3D Electronics and Smart Wearables

open access: yesAdvanced Functional Materials, EarlyView.
Selective soldering via molten metal printing enables component integration, even in heat‐sensitive applications across fields like additive manufacturing, sustainable electronics, and smart textiles. This method overcomes the temperature limitations of existing technologies.
Dániel Straubinger   +4 more
wiley   +1 more source

On marine propulsion [PDF]

open access: yesJournal of the Franklin Institute
n ...
openaire   +2 more sources

Harnessing Outer Space for Improved Electrocaloric Cooling

open access: yesAdvanced Functional Materials, EarlyView.
A novel radiative heat sink/source‐integrated electrocaloric (R‐iEC) system combines the electrocaloric (EC) effect with a thermally conductive radiative cooler (TCRC) to address heat dissipation limitations in EC devices. Utilizing outer space as a heat sink, the system achieves up to 240 W m−2 of heat dissipation performance, making it highly ...
Dong Hyun Seo   +8 more
wiley   +1 more source

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