Results 111 to 120 of about 267,007 (345)

Fluorine‐Free Soft Nanocomposites for High‐Speed Liquid Impact Repellence

open access: yesAdvanced Functional Materials, EarlyView.
Fluorine‐free soft nanocomposite coatings are developed using silicone oil‐mediated mechanical‐stiffness control, enabling ‘dry’ liquid‐repellent surfaces that resist high‐speed water jet impacts up to ∼60 m/s. By tuning nanoparticle loading and oil content, the coatings also achieve >90% optical transparency, amphiphobicity with impact resistance to ...
Priya Mandal   +4 more
wiley   +1 more source

Simulasi Cup Drawing Untuk Menghindari Cacat Wrinkling Dan Thinning Dengan Menggunakan Software Autoform R2 [PDF]

open access: yes, 2016
Simulations carried out to reduce the pace of trial and error so as to avoid the mistakes of products and can reduce the overall cost of production.
Muhammad Effendi, Fendi
core  

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Effects of sliding surface profile on friction characteristics of viscoelastic material

open access: yesNihon Kikai Gakkai ronbunshu, 2014
In order to clarify the effect of surface profile on friction characteristics of viscoelastic material used for oil seal, sliding test was conducted under oil lubrication with the NBR (Nitrile Butadiene Rubber) specimen in combination with steel specimen.
Masahiro FUJII   +2 more
doaj   +1 more source

Forced Lubrication Method and the Quantitative Evaluation of Friction Coefficient during Deep Drawing

open access: yesTehnicki vjesnik - Technical Gazette
The friction in the sheet forming process is characterized by high contact pressure, large actual contact area and constantly changing friction surface, and the lubrication condition is very severe. In this paper, a forced lubrication process that relies on pressure from external power is proposed and applied to sheet forming.
Chen, Duan   +3 more
openaire   +3 more sources

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

open access: yesAdvanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler   +3 more
wiley   +1 more source

The Effect of Compression Ring Profile on the Friction Force in an Internal Combustion Engine [PDF]

open access: yesTribology in Industry, 2013
In an internal combustion engine piston, piston ring and cylinder are the most important assembly for transmitting the forces produced by the combustion process. The friction between piston ring pack and cylinder accounts for major portion of friction in
A. Sonthalia, C.R. Kumar
doaj  

Dynamics of a driven probe molecule in a liquid monolayer

open access: yes, 1997
We study dynamics of a probe molecule, driven by an external constant force in a liquid monolayer on top of solid surface. In terms of a microscopic, mean-field-type approach, we calculate the terminal velocity of the probe molecule.
G Oshanin   +5 more
core   +2 more sources

Tribological Classification of Contact Lenses: From Coefficient of Friction to Sliding Work

open access: yesTribology letter, 2016
The coefficient of friction (CoF) has been reported to correlate with clinical comfort of soft contact lenses (SCL). However, a classification in terms of a CoF is not always applicable to soft materials, such as hydrogels, due to the frequently observed
O. Sterner   +6 more
semanticscholar   +1 more source

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

open access: yesAdvanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source

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