Results 31 to 40 of about 4,653 (259)

Primitive Crust Buried Below the Southern Highland of Mars

The Astrophysical Journal
Geochemical studies of shergottites have predicted an enriched end member associated with the final residual liquid of the Martian magma ocean, which may result in the formation of a KREEP-like silica-rich primitive crust on early Mars.
Shuoran Yu, Nan Zhang, Mingjie Zhang, Long Xiao   +3 more
doaj   +1 more source

Salt Distribution from Freezing Intrusions in Ice Shells on Ocean Worlds: Application to Europa

The Planetary Science Journal, 2023
Several icy moons and dwarf planets appear to have hosted subsurface liquid water. Liquid water intruding upwards into the icy outer shells of these worlds freezes, forming ice and (from ocean solutes) non-ice solids.
Mariam Naseem, Marc Neveu, Samuel Howell, Elodie Lesage, Mohit Melwani Daswani, Steven D. Vance   +5 more
doaj   +1 more source

Stretchable and Strain‐Tolerant Gold‐Coated Fibrous Biosensor for Superoxide Anion Monitoring

Advanced Materials Technologies, EarlyView.
A breathable, stretchable gold nanomesh–TPU fiber platform is developed via controlled electroless deposition, enabling uniform through‐thickness conductivity while preserving porosity. Functionalized with superoxide dismutase, the system achieves selective, real‐time electrochemical detection of superoxide with high sensitivity, mechanical durability,
Jafar M. Batayneh, Ahyeon Koh
wiley   +1 more source

Coupled Planetary Interior and Tidal Evolution

The Astrophysical Journal
We present a new planetary structure/thermal evolution model, designed for use in problems that couple orbital dynamics with planetary structure. We first benchmark our structural/thermal evolution calculations against the MESA stellar evolution code ...
Tim Hallatt, Sarah Millholland
doaj   +1 more source

Planetary interiors

Eos, Transactions American Geophysical Union, 1971
Most publications on planetary interiors in the last 4 years have dealt with the moon, and the most popular topic has been the interpretation of lunar mascons (the nature and discovery of mascons are covered in the review ‘Selenodesy and Planetary Geodesy’ by W. M. Kaula).
openaire   +1 more source

Coaxial Melt Electrowriting

Advanced Materials Technologies, EarlyView.
Coaxial melt electrowriting is established to produce dual‐property microfibers with diameters spanning 1.6–29.2 µm. Stable coaxial laminar flow is preserved under electrohydrodynamic thinning, enabling controlled binary and gradient material switching within individual continuous fibers.
Patrick C. Hall, D. Iman von Briesen, Maya Kasteleiner, Gabriela M. Bailey, Diana Ostojich, Harrison W. Reid, Andre Olarra, Benjamín J. Alemán, Simon Luposchainsky, Biranche Tandon, Ramesh Jasti, Paul D. Dalton   +11 more
wiley   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

An Ancient Martian Dynamo Driven by Hemispheric Heating: Effect of Thermal Boundary Conditions

The Planetary Science Journal, 2023
Magnetic field observations from the MGS, MAVEN, and InSight missions reveal that a dynamo was active in Mars’s early history. One unique feature of Mars’s magnetic crustal field is its hemispheric dichotomy, where magnetic fields in the southern ...
Chi Yan, Ankit Barik, Sabine Stanley, Jason S.-Y. Leung, Anna Mittelholz, Catherine L. Johnson, Ana-Catalina Plesa, Attilio Rivoldini   +7 more
doaj   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

Advanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Chemical Mapping of Temperate Sub-Neptune Atmospheres: Constraining the Deep Interior H2O/H2 Ratio from the Atmospheric CO2/CH4 Ratio

The Astrophysical Journal Letters
Understanding the planetary envelope composition of sub-Neptune-type exoplanets is challenging due to the inherent degeneracy in their interior composition scenarios.
Jeehyun Yang, Renyu Hu
doaj   +1 more source