Results 71 to 80 of about 29,471 (307)

A Semi-Analytical Solution for a Porous Channel Flow of a Non-Newtonian Fluid

open access: yesJournal of Applied Fluid Mechanics, 2016
A theoretical study of steady laminar two-dimensional flow of a non-Newtonian fluid in a parallel porous channel with variable permeable walls is carried out.
P. Vimala, P. Blessie Omega
doaj  

Solution‐Processed Organic Photovoltaics: Fabrication Advances and Challenges

open access: yesAdvanced Science, EarlyView.
This review highlights recent advances in organic photovoltaic (OPV) device fabrication, emphasizing how material selection, interface engineering, and scalable processing techniques shape device performance. It discusses progress in photoactive and charge transport layers, electrode optimization, and large‐area manufacturing, offering insights into ...
Kerui Liu   +4 more
wiley   +1 more source

Flow Control of Non-Newtonain Fluid using Riga Plate: Reiner-Phillipoff and Powell-Eyring Viscosity Models

open access: yesJournal of Applied Fluid Mechanics, 2019
This article investigates the controlling effects of electromagnetic field generated by Riga plate on the boundary layer flow of non-Newtonian fluid. Two classical viscosity models of non-Newtonian fluids namely; Powell-Eyring and Reiner-Phillipoff fluid
A. Ahmad
doaj  

Improved Direct Ink Writing of Liquid Metal Foams via Liquid Additives

open access: yesAdvanced Electronic Materials, EarlyView.
The ability to pattern liquid metal is useful for making soft electrical and thermal devices. Dispensing liquid metal from a nozzle naturally results in the formation of spheroidal droplets, making direct‐write printing challenging. Liquid metal foams containing pockets of air can extrude as filaments, albeit inconsistently.
Febby Krisnadi   +3 more
wiley   +1 more source

Insight‐Guided Optimization of the Individual Steps in Ambient Slot‐Die‐Coated Perovskite Solar Cells

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
This graphical abstract presents an integrated workflow for optimizing perovskite thin film fabrication by tuning ink rheology, refining processing parameters, and controlling crystallization. Viscosity control and process optimization precisely regulate wet film thickness and drying time, while crystallization directed by solvent additives yields ...
Alejandra Flórez   +8 more
wiley   +1 more source

Study of non-stationary flow of viscoelastic incompressible fluid in a flat channel [PDF]

open access: yesE3S Web of Conferences
The problems of the non-stationary flow of a viscoelastic fluid in a flat channel under the influence of a constant pressure gradient are solved based on the generalized Maxwell model.
Navruzov Kuralboy   +4 more
doaj   +1 more source

Wearable Metamaterials with Embodied Intelligence for Programmable Control of Human Limbs Tremor

open access: yesAdvanced Intelligent Systems, EarlyView.
Resulting from alternating muscle contractions, tremors can severely limit human ability to perform everyday tasks like walking or talking, due to their disruptive nature. Medication and surgery may not always effectively address tremor control. A wearable device embodying programmable smart metamaterials with adaptable intelligence to meet the demand ...
Braion Barbosa de Moura   +2 more
wiley   +1 more source

Screw‐Based Pill for Intelligent Robotic Extraction of Viscous Fluids in Medical Applications

open access: yesAdvanced Intelligent Systems, EarlyView.
Screw‐based pill for intelligent robotic extraction (S‐PIRE) is a magnetically actuated smart capsule with a motorized screw, 3‐axis sensor, and Bluetooth control for site‐specific and minimally invasive remote sampling of viscous fluids, overcoming passive diffusion limitations.
Prima Dewi Sinawang   +6 more
wiley   +1 more source

A Miniature Rotary Electrostatic Clutch for Assigning Multi‐Degrees of Freedom to Insect‐Scale Robots

open access: yesAdvanced Intelligent Systems, EarlyView.
Insect‐scale crawling robots can traverse confined environments; nevertheless, their functionalities are predominantly restricted to sensing because of challenges in integrating actuated degrees of freedom. Herein, a miniature rotary electrostatic clutch is presented by incorporating cutting patterns in the clutch layer.
Jongeun Lee   +4 more
wiley   +1 more source

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