Results 71 to 80 of about 61,268 (302)

Ion Thruster Development at NASA Lewis Research Center [PDF]

open access: yes
Recent ion propulsion technology efforts at NASA's Lewis Research Center including development of kW-class xenon ion thrusters, high power xenon and krypton ion thrusters, and power processors are reviewed.
Hamley, John A.   +4 more
core   +1 more source

Mechanically Spatio‐Chimeric Fibrin Assembly Enables Vascular‐Integrated Muscle Reconstruction for Volumetric Muscle Loss Repair

open access: yesAdvanced Materials, EarlyView.
SPARC (spatio‐chimeric, plasma‐based, anisotropic, and shear‐responsive construct) that integrates myogenic and vascular microenvironments within a single construct. The dual‐modulus matrix directs aligned myotube formation and endothelial network development, enabling a vascularized muscle implant that seamlessly anastomoses with host tissue and ...
Su Hyun Jung   +6 more
wiley   +1 more source

Small business innovation research. Abstracts of 1988 phase 1 awards [PDF]

open access: yes
Non-proprietary proposal abstracts of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA are presented. Projects in the fields of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and structures ...

core   +1 more source

Survey and documentation of emerging technologies for the Satellite Power System (SPS) [PDF]

open access: yes, 1981
The genesis of the solar power satellite (SPS) concept is reviewed historically and the original assumptions and guidelines which led to development of the SPS reference system design concept are discussed.
Chapman, P., Glaser, P.
core   +2 more sources

Plasmonic Nanomachines: Creating Local Potential Gradients and Motions

open access: yesAdvanced Materials, EarlyView.
Plasmonic nanomachines can generate optical, thermal, and chemical potential gradients to drive directional rectilinear, rotational, and twisting motions at the nanometer scale. The integration of multimodal plasmonic forces with functional materials and programmed structural distortions enables precise spatiotemporal actuation, thereby providing a ...
Yoonhee Kim   +3 more
wiley   +1 more source

Small business innovation research. Abstracts of completed 1987 phase 1 projects [PDF]

open access: yes
Non-proprietary summaries of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA in the 1987 program year are given. Work in the areas of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and ...

core   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

open access: yesAdvanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen   +7 more
wiley   +1 more source

Bonding of Acrylic Pressure‐Sensitive Adhesives and Silicone Elastomers via Surfactant‐Assisted Plasma Activation for Soft Robotics

open access: yesAdvanced Materials Interfaces, EarlyView.
A simple strategy is presented for bonding acrylic PSAs and silicone elastomers by curing surfactant‐doped Ecoflex on oxygen‐plasma‐treated VHB. The interface reaches a maximum strength of 1.6 N/mm (over 20 times that of the control) while retaining material compliance.
Kengo Kusama   +7 more
wiley   +1 more source

The JPL mechanically steered antenna [PDF]

open access: yes
The Jet Propulsion Laboratory has designed and developed a mechanically steered antenna for tracking satellites in a mobile environment. This antenna was used to track an L-band beacon on the MARISAT satellite.
Bell, David J., Berner, Jeff B.
core   +1 more source

Tailoring the Morphology of MoS2 using RF Magnetron Sputtering for Enhanced Photoelectrochemical Water Splitting

open access: yesAdvanced Materials Interfaces, EarlyView.
Tailoring the morphology of MoS2 using RF Magnetron Sputtering for Enhanced Photoelectrochemical Water Splitting. ABSTRACT 2D molybdenum disulfide (MoS2) is a promising material for optoelectronic and photoelectrochemical (PEC) applications due to its unique properties.
Somnath Ladhane   +9 more
wiley   +1 more source

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