Results 111 to 120 of about 1,035,663 (297)

Laser‐Induced Local De‐Doping in Organic Semiconductors

open access: yesAdvanced Materials Technologies, EarlyView.
The polymer PBTTT‐C14 doped with the small molecule acceptor F4TCNQ is considered as a benchmark material system. Mask‐free, microscale patterning of the doping level via laser‐induced heating and sublimation of dopant molecules is shown. Controlling laser irradiance and swath spacing allows dopant level control with laser‐limited resolution, opening ...
Christian Rainer   +5 more
wiley   +1 more source

First European forum on laminar flow technology Proceedings

open access: yes, 1992
Increasing competition in the aircraft market, stringent environmental requirements and increasing air traffic control problems challenge the aeronautical research on all levels, Universities, Research Institutes and Industry.
Deutsche Gesellschaft fuer Luft- und Raumfahrt e.V., Bonn (Germany)
core  

Laminar and turbulent regime changes in drinking water contact tanks

open access: yes, 2014
Transitions in flow regimes that can occur in drinking water contact tanks may significantly affect the disinfection efficiency of the system. To demonstrate these effects, the authors investigated the internal velocity fields and flow regime of a ...
Subhas K. Venayagamoorthy   +3 more
core   +1 more source

A Constraint‐Based Analytical Framework for Design‐Space Analysis and Material Screening of Tubular Multilayer Dielectric Elastomer Pumps for Extracorporeal Circulatory Applications

open access: yesAdvanced Materials Technologies, EarlyView.
A constraint‐based analytical framework maps the coupled effects of material properties, structural parameters, and operating conditions in tubular dielectric elastomer pumps for extracorporeal circulatory applications. The approach defines performance boundaries through mechanical, electrical, and hydraulic constraints and identifies feasible design ...
Yan Zhang   +3 more
wiley   +1 more source

Experimental Study on Frictional Pressure Drop Characteristics of Wire-wrapped Bundles in Transition Flow

open access: yesYuanzineng kexue jishu
The investigation of frictional pressure drops in wire-wrapped bundles at low flow velocities is crucial for thermal-hydraulic studies of sodium-cooled fast reactor cores.
LI Hongrui1, , XUE Xiuli2, ZHOU Zhiwei2, ZENG Zehua1, LUO Rui1,
doaj   +1 more source

Laminar and turbulent transition in fine-grained non-Newtonian slurries

open access: yes, 2001
The transition from laminar to turbulent flow regime is very important for design and operation of non-Newtonian slurries pipelining. The paper deals with experimental investigation of laminar/turbulent transition, flow behaviour and rheological ...
Vlasák, Pavel
core  

Aeroelasticity of a laminar wing [PDF]

open access: yes, 2011
Within the DLR Institute of Aeroelasticity project iGREEN (integrated green aircraft) the aeroelastic behavior of a typical laminar airfoil under unsteady transonic flow conditions was to be investigated.
Hebler, Anne, Mai, Holger
core  

Spatially Configurable Conformal Sensor Integration on an Ultra‐Fine Metallic Needle for Minimally Invasive Deep‐Tissue Oxygen Monitoring

open access: yesAdvanced Materials Technologies, EarlyView.
A multi‐point oxygen‐sensing ultra‐fine needle (MO‐UFN) is developed by conformally integrating a lithographically patterned flexible electrochemical sensor array onto a clinical acupuncture needle. The platform preserves an approximately 0.3 mm diameter while enabling spatially resolved oxygen profiling along the insertion pathway.
Yeju Seo   +9 more
wiley   +1 more source

Dynamics of laminar pressure-driven channel flows laden with neutrally buoyant finite-size particles. [PDF]

open access: yes, 2013
Since the pioneering work of Reynolds (1883), much effort has been allocated on the topic of laminar-turbulent transition regime in a single-phase flow, with special focusing on the unstable and intermittent natures of this regime (Mullin, 2011).
Loisel, Vincent   +3 more
core  

Multidimensional Heat‐Path Engineering in Thermal Interface Materials for High‐Performance Electronics

open access: yesAdvanced Materials Technologies, EarlyView.
This review presents multidimensional heat‐path engineering for thermal interface materials, showing how internal heat transport, interfacial contact and bondline formation, and processing‐defined pathway architectures together determine bonded‐joint thermal performance.
Jinsoo Na   +7 more
wiley   +1 more source

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