Results 131 to 140 of about 2,452,401 (315)

Robust and Reversible Thermofluorescence in Solvent‐Free Thermoplastic Polyurethane Composites

open access: yesAdvanced Functional Materials, EarlyView.
Thermofluorescent polymer composites with high‐contrast optical outputs are prepared by solvent‐free blending of indenoquinacridone dye into a thermoplastic polyurethane matrix. The temperature‐dependent fluorescence originates from aggregation–dissociation of the dye molecules, regulated by competing hydrogen bonds from the polymer matrix.
Guanghua Yu   +8 more
wiley   +1 more source

Hydrogen enhanced biodiesel production from Botryococcus braunii algal oil for sustainable fuel development. [PDF]

open access: yesSci Rep
Selvam M   +6 more
europepmc   +1 more source

Antiproton powered propulsion with magnetically confined plasma engines [PDF]

open access: yes
Matter-antimatter annihilation releases more energy per unit mass than any other method of energy production, making it an attractive energy source for spacecraft propulsion.
Lapointe, Michael R.
core   +1 more source

Controlled Movement of Soft Actuators using Multi‐Responsive Microgel Arrays and Microcirculatory Systems

open access: yesAdvanced Functional Materials, EarlyView.
Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang   +2 more
wiley   +1 more source

Development, qualification, and delivery of a hydrogen burnoff igniter [PDF]

open access: yes
The hydrogen burnoff igniter, a pyrotechnic device used to burn off excess hydrogen gas near the Space Shuttle Main Engine (SSME) nozzle, was designed, fabricated, and qualified.
Ray, D.
core   +1 more source

Hydrogen Powered Engine and Application

open access: yesHighlights in Science, Engineering and Technology
Hydrogen energy, with abundant sources, high energy density, environmentally friendly usage, and zero carbon emissions, is touted as the ideal energy source of the 21st century and has been elevated to a national strategic level by multiple countries. On the one hand, due to the volatility of renewable energy sources such as wind and solar power, it is
openaire   +1 more source

Rational Device Design and Doping‐Controlled Performance in Fast‐Response π‐Ion Gel Transistors

open access: yesAdvanced Functional Materials, EarlyView.
π‐Ion gel transistors (PIGTs) achieve extraordinary transconductance and stability through device configuration optimization, high‐mobility conjugated polymer selection, and hole scavenger doping. The optimized PIGTs maintain performance on flexible substrates, enabling printed, fast‐response, and wearable electronics.
Masato Kato   +10 more
wiley   +1 more source

A conceptual study of the potential for automotive-derived and free-piston Stirling engines in 30- to 400-kilowatt stationary power applications [PDF]

open access: yes
The technical feasibility of applying automotive-derived kinematic and free-piston Stirling engine concepts for stationary applications was explored. Automotive-derived engines offer cost advantages by providing a mature and developd engine technology ...
Chen, H. S., Dineen, J., Vatsky, A.
core   +1 more source

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