Results 151 to 160 of about 142,277 (291)

Scalable High‐Force Zipping Electrostatic Actuators

Advanced Intelligent Systems, EarlyView.
An electrostatic actuator architecture is presented that combines high energy density with forces and strokes suited for wearable soft robotics. By folding patterned thin films into a scalable honeycomb of zipping units, performance becomes tunable through series–parallel design, achieving over 40 N and 28 J/kg.
Fabio Caruso, Amir Firouzeh, Herbert Shea   +2 more
wiley   +1 more source

Future Opportunities for Dynamic Power Systems for NASA Missions [PDF]

Dynamic power systems have the potential to be used in Radioisotope Power Systems (RPS) and Fission Surface Power Systems (FSPS) to provide high efficiency, reliable and long life power generation for future NASA applications and missions.
Shaltens, Richard K.
core   +1 more source

Improved Dry‐Pressing Strategy for Fabricating Double‐Sided Rough YSZ Electrolyte Thin Films and Their Performance in Solid Oxide Cells

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study addresses limitations of the conventional dry‐pressing method for electrolyte‐supported films—smooth surfaces, excessive thickness, and fragile supports inducing damage. We propose an innovative camphor–quartz sand composite architecture to construct a five‐layer (camphor/quartz sand/YSZ/quartz sand/camphor) system, enabling thin ...
Hong Chang, Hewei Xu, Haoyu Li, Jiachun Niu, Lina Zhang, Chenying Yao, Yiyi Zhang, Huili Chen, Chuan Dong   +8 more
wiley   +1 more source

A review on MnZn ferrites: Synthesis, characterization and applications. [PDF]

Ceram Int, 2020
Thakur P, Chahar D, Taneja S, Bhalla N, Thakur A.   +4 more
europepmc   +1 more source

NASA Low-Power Stirling Convertor for Small Landers, Probes, and Rovers Operating in Darkness [PDF]

A variety of mission concepts have been studied by NASA and the U. S. Department of Energy that would utilize low power Radioisotope Power Systems (RPS) for landers, probes, and rovers.
Casciani, Michael R., Geng, Steven M., Penswick, Lawrence B., Reid, Terry V., Schifer, Nicholas A., Wilson, Scott D.   +5 more
core   +1 more source

k‐Selective Electrical‐to‐Magnon Transduction with Finite‐Element‐Resolved Sub‐Micron Nanoantennas

Advanced Physics Research, EarlyView.
We introduce a coupled finite‐element‐finite‐difference framework that links impedance‐matched nanoantenna geometries to propagating spin‐wave dynamics, capturing skin effects, proximity effects, and taper leakage beyond uniform‐current models. Applied to coplanar‐waveguide and stripline nanoantennas on yttrium‐iron‐garnet, the simulations achieve ...
Andreas Höfinger, Andrey A. Voronov, David Schmoll, Sabri Koraltan, Florian Bruckner, Claas Abert, Dieter Suess, Morris Lindner, Timmy Reimann, Carsten Dubs, Andrii V. Chumak, Sebastian Knauer   +11 more
wiley   +1 more source

Advanced Stirling Convertor Durability Testing: Plans and Interim Results [PDF]

The U.S. Department of Energy (DOE), Lockheed Martin Corporation (LM), and NASA Glenn Research Center (GRC) have been developing the Advanced Stirling Radioisotope Generator (ASRG) for use as a power system for space science missions.
Meer, David W., Oriti, Salvatore M.
core   +2 more sources

Magnetic Field‐Modulated Boolean Logic in Proteinoid‐ Fe3 O4 Hybrid Materials

Advanced Physics Research, EarlyView.
Proteinoid‐Fe3O4${\rm Fe}_3{\rm O}_4$. nanoparticle composites exhibit spontaneous electrical oscillations that emulate Boolean logic gates (AND, OR, XOR, NAND, NOR, NOT) under magnetic field modulation. External fields of 65.103 mT tune oscillatory behavior: 84 mT enhances amplitude while 103 mT suppresses it.
Panagiotis Mougkogiannis, Andrew Adamatzky   +1 more
wiley   +1 more source

Lunar Surface Stirling Power Systems Using Isotope Heat Sources [PDF]

For many years, NASA has used the decay of plutonium-238 (Pu-238) (in the form of the General Purpose Heat Source (GPHS)) as a heat source for Radioisotope Thermoelectric Generators (RTGs), which have provided electrical power for many NASA missions ...
Penswick, L. Barry, Schmitz, Paul C., Shaltens, Richard K.   +2 more
core   +1 more source

From Capabilities to Competitive Greening: Managerial Commitment and Green Shared Vision as Serial Mediators in Energy‐Sector SMEs

Business Strategy and the Environment, EarlyView.
ABSTRACT Drawing on dynamic capabilities view and upper echelons theory, this study shows how energy‐sector SMEs convert dynamic capabilities into green competitive advantage. We theorize that sensing–seizing–reconfiguring routines are associated with green competitive advantage only when top managers visibly prioritize environmental goals and foster a
Anna Chwiłkowska‐Kubala, Szymon Cyfert, Kamila Malewska, Michał Chomicki, Maciej Mitręga   +4 more
wiley   +1 more source