Results 141 to 150 of about 526,420 (390)

Dynamically Adaptive Wrinkle‐Structured Light‐Regulating Films for Energy‐Efficient Buildings

open access: yesAdvanced Functional Materials, EarlyView.
A scalable, moisture‐responsive cellulose nanofibril/polyvinyl alcohol (CNF/PVA)‐glycerol film with switchable wrinkled surfaces for dynamic light regulation is developed. Compared to glass, it achieves tunable light diffusion for daylight harvesting, thermal regulation, and privacy control.
Jiaying Zhu   +8 more
wiley   +1 more source

On the Structural and Chemical Homogeneity of Spark Plasma Sintered Tungsten

open access: yesMetals, 2019
Tungsten-based materials are the prime candidate plasma-facing materials for future fusion reactors, such as DEMO. Spark plasma sintering is a prospective fabrication technology with several advantageous features.
Jiří Matějíček   +8 more
doaj   +1 more source

Research on cold cathodes Second quarterly report, 14 Aug. - 14 Nov. 1965 [PDF]

open access: yes
GaP/tungsten and GaP/platinum diode and tungsten/barium oxide phototube fabrication and testing in cold cathode ...
Dore, B. V., Geppert, D. V.
core   +1 more source

The influence of transition metal solutes on dislocation core structure and values of Peierls stress and barrier in tungsten

open access: yes, 2012
Several transition metals were examined to evaluate their potential for improving the ductility of tungsten. The dislocation core structure and Peierls stress and barrier of $1/2$ screw dislocations in binary tungsten-transition metal alloys (W$_{1-x}$TM$
Edington J W Gilbert A Klein M J   +19 more
core   +1 more source

Unlock the Walnut: How a Pectin‐Rich Suture Tissue and Moisture‐Driven Crack Formation Induce Shell Splitting and Facilitate Seed Germination

open access: yesAdvanced Functional Materials, EarlyView.
Walnut seeds are enclosed in a remarkably strong shell made of sclerenchyma, separated by a pectin‐rich suture tissue. Different cell shapes and chemical composition of this tissue point to an opening mechanism, which is triggered by cyclic humidity changes.
Sebastian J. Antreich   +3 more
wiley   +1 more source

Method of producing porous tungsten ionizers for ion rocket engines Patent [PDF]

open access: yes, 1964
Method for producing porous tungsten plates for ionizing cesium compounds for propulsion of ion ...
Saunders, N. T.
core   +1 more source

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán   +13 more
wiley   +1 more source

Internal wire guide for GTAW welding [PDF]

open access: yes, 1989
A welding torch for gas tungsten arc welding apparatus has a filler metal wire guide positioned within the torch, and within the shielding gas nozzle. The wire guide is adjacent to the tungsten electrode and has a ceramic liner through which the wire is ...
Dyer, Gerald E., Morgan, Gene E.
core   +1 more source

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