Results 61 to 70 of about 626,953 (312)

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source

In –situ analysis of two phase lubricant oil film with a reflectance spectroscopy

Nihon Kikai Gakkai ronbunshu, 2020
Two phase lubricant has attracted attention as a lubricating oil with little change in viscosity with temperature change. The two phase lubricant consist of the low and high viscosity base oils which are miscible at high temperature but not at lower ...
Takazumi YAMADA, Noritsugu UMEHARA, Takayuki TOKOROYAMA, Motoyuki MURASHIMA, Taku SATO, Kenji OHARA, Kiyoshi HANYUDA   +6 more
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source

Mathematical Model of Piston Ring Sealing in Combustion Engine

Polish Maritime Research, 2015
This paper presents a mathematical model of piston-rings-cylinder sealing (TPC) of a combustion engine. The developed model is an itegrated model of gas flow through gaps in TPC unit, displacements and twisting motions of piston rings in ring grooves as ...
Koszałka Grzegorz, Guzik Mirosław
doaj   +1 more source

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

APPROXIMATE SOLUTION OF NONLINEAR OIL FILM FORCES OF FINITE LENGTH SLIDE JOURNAL BEARING

Jixie qiangdu, 2016
Supposing the oil film at the laminar state,an approximate analytical method is proposed for calculating nonlinear oil film forces of finite length journal bearing.
HEI Di, LU ZunYou
doaj  

Servo Driven Hydraulic Cylinder Hydrostatic Guide Sleeve Temperature Field Analysis

Journal of Harbin University of Science and Technology, 2020
Hydraulic quadruped robot has the characteristics of running smoothly, loading strongly and adapting to the diversified environment, so the research of universities and enterprises is more extensive As the main driving element of quadruped robot ...
SHAO Junpeng, XU Longfei, SUN Guitao
doaj   +1 more source

Mechanoregulatory Effects of Cell‐Scale Microwells on Epithelial Cell Phenotype

Advanced Functional Materials, EarlyView.
In small polycaprolactone microwells, A549 epithelial cells span well edges, in contrast to cells growing on flat substrates. Focal adhesion sites (yellow) concentrate at topographic boundaries, while cytoskeletal tension (magenta stress fibers) is transmitted to the nucleus (blue), reducing nuclear sphericity.
Ruiwen He, Wang Sik Lee, Phattadon Yajan, Aaron Lee, Mauro Sousa de Almeida, Sandeep Keshavan, Jozef Adamcik, Céline Loussert‐Fonta, Dimitri Vanhecke, Barbara Rothen‐Rutishauser, Alke Petri‐Fink   +10 more
wiley   +1 more source

Difference of Reynolds Crisis Aspects on Soccer Balls and Their Panels

Proceedings, 2020
The soccer ball panel pattern, which changes every World Cup, greatly affects the ball’s aerodynamics and flight characteristics. In this study, the fluid force of 11 soccer balls with different panel patterns was measured by wind tunnel tests.
Yuki Sakamoto, Shinichiro Ito, Masaki Hiratsuka   +2 more
doaj   +1 more source

The measurement of lubricant-film thickness using ultrasound [PDF]

, 2003
Ultrasound is reflected from a liquid layer between two solid bodies. This reflection depends on the ultrasonic frequency, the acoustic properties of the liquid and solid, and the layer thickness.
Astridge D. G., B. W. Drinkwater, C. J. Donohoe, Hamilton G. M., R. S. Dwyer-Joyce, Tattersall H. G., Tsukahara Y.   +6 more
core   +1 more source