Results 91 to 100 of about 384,122 (348)

Masked Autoencoders for Ultrasound Signals: Robust Representation Learning for Downstream Applications

open access: yesIEEE Access
We investigated the adaptation and performance of Masked Autoencoders (MAEs) with Vision Transformer (ViT) architectures for self-supervised representation learning on one-dimensional (1D) ultrasound signals.
Immanuel Robteutscher   +2 more
doaj   +1 more source

Editorial for the Special Issue on Piezoelectric MEMS

open access: yesMicromachines, 2018
Electromechanical transducers that utilize the piezoelectric effect have been increasingly used in micro-electromechanical systems (MEMS) either as substrates or as thin films[...]
Ulrich Schmid, Michael Schneider
doaj   +1 more source

Superconducting linear actuator [PDF]

open access: yes
Special actuators are needed to control the orientation of large structures in space-based precision pointing systems. Electromagnetic actuators that presently exist are too large in size and their bandwidth is too low.
Hockney, Richard, Johnson, Bruce
core   +1 more source

Fused switch [PDF]

open access: yes, 1964
An electric switch device is described which can be used safely even in an explosive environment. The switch has an operating arm, and a moveable actuator which is engaged by the arm and moved between a number of positions in which the arm opens or ...
Weber, G. J.
core   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Conceptual hermetically sealed elbow actuator [PDF]

open access: yes, 1968
Electrically or hydraulically powered, hermetically sealed angular or rotary actuator deflects mechanical members over a range of plus or minus 180 degrees.
Wuenscher, H. F.
core   +1 more source

Realisation of a Novel Functionally Redundant Actuation System for a Railway Track-Switch [PDF]

open access: gold, 2021
Osama Olaby   +4 more
openalex   +1 more source

Liquid Metals as Initiators of Free‐Radical Polymerization of Hydrogels: A Perspective

open access: yesAdvanced Functional Materials, EarlyView.
Gallium‐based liquid metals initiate free radical polymerization to form hydrogels without the use of toxic molecular initiators. In addition to initiating polymerization, they can act as crosslinkers, yielding softer, more extensible, and tougher hydrogels than those formed with conventional initiators.
Syed Ahmed Jaseem   +8 more
wiley   +1 more source

Optical Simulation of Light Management in CIGS Thin-Film Solar Cells Using Finite Element Method

open access: yesApplied Sciences, 2015
In this paper we present an optical simulation of light management in Cu(In,Ga)Se2 thin-film solar cells with reduced absorber layer thickness, with the goal of absorption enhancement in the absorber layer.
Nikola Bednar   +2 more
doaj   +1 more source

Device Integration Technology for Practical Flexible Electronics Systems

open access: yesAdvanced Functional Materials, EarlyView.
Flexible device integration technologies are essential for realizing practical flexible electronic systems. In this review paper, wiring and bonding techniques critical for the industrial‐scale manufacturing of wearable devices are emphasized based on flexible electronics.
Masahito Takakuwa   +5 more
wiley   +1 more source

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