Results 61 to 70 of about 117,291 (374)

Serpentuator Patent [PDF]

open access: yes, 1970
Internal and external serpentine devices for performing physical operations around orbital space ...
Wuenscher, H. F.
core   +1 more source

Quantifying Spatio‐Operational Heterogeneity in Electrochemical Devices via Operando Correlative Neutron and X‐Ray Tomography

open access: yesAdvanced Functional Materials, EarlyView.
Heterogeniety in electrochemical systems heavily influences device performance and durability. The study shows unique evidence of spatio‐operational heterogeneity in fuel cells via operando neutron and X‐ray tomography. Large variations in membrane thickness and hydration depend upon location and operating conditions, with implications on membrane ...
Pranay Shrestha   +9 more
wiley   +1 more source

The petrology of fine-grained micrometeorites: Evidence for the diversity of primitive asteroids [PDF]

open access: yes, 2001
We report the discovery by analytical TEM of serpentine and phases interpreted as dehydroxylates of serpentine in ultramicrotomed sections of a number of fine-grained Antarctic ...
Bradley, J.P.   +5 more
core  

Scanning superconducting quantum interference device on a tip for magnetic imaging of nanoscale phenomena

open access: yes, 2012
We describe a new type of scanning probe microscope based on a superconducting quantum interference device (SQUID) that resides on the apex of a sharp tip. The SQUID-on-tip is glued to a quartz tuning fork which allows scanning at a tip-sample separation
Finkler, A.   +8 more
core   +1 more source

Mixing Enhancement in Serpentine Micromixers with a Non-Rectangular Cross-Section

open access: yesMicromachines, 2018
In this numerical study, a new type of serpentine micromixer involving mixing units with a non-rectangular cross-section is investigated. Similar to other serpentine/spiral shaped micromixers, the design exploits the formation of transversal vortices ...
Joshua T. Clark, Miron Kaufman, P. Fodor
semanticscholar   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou   +15 more
wiley   +1 more source

鼓形蛇簧联轴器的设计与性能分析

open access: yesJixie chuandong, 2014
Serpentine spring coupling,as a flexible coupling is widely used in general machinery occasions.A novel serpentine spring coupling-the drum serpentine spring coupling is presented.Firstly,the mechanics modeling of the serpentine spring is built,and the ...
曾鹏修, 陈光柱, 黄虎
doaj  

Metal-organic dual layer structure for stretchable interconnects [PDF]

open access: yes, 2016
This paper reports a novel method for obtaining stretchable interconnects using gold and organic material (PEDOT:PSS) in a dual-layer structure on PDMS substrate.
Dahiya, Ravinder   +3 more
core   +1 more source

Electroactive Liquid Crystal Elastomers as Soft Actuators

open access: yesAdvanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Biomimetic flow fields for proton exchange membrane fuel cells: A review of design trends [PDF]

open access: yes, 2020
Bipolar Plate design is one of the most active research fields in Polymer Electrolyte Membrane Fuel Cells (PEMFCs) development. Bipolar Plates are key components for ensuring an appropriate water management within the cell, preventing flooding and ...
Arredondo, C. H.   +3 more
core  

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