Results 21 to 30 of about 4,073 (93)

Improving Efficiency of Light Pressure Electric Generator Using Graphene Oxide Nanospacer Between Ag Nanoparticles

open access: yesCarbon Energy, Volume 8, Issue 1, January 2026.
This study improved light pressure‐to‐electricity energy harvesting by upgrading a Basic‐LPEG device with Ag nanoparticles/graphene oxide (AgNPs/GO) composites. This enhancement boosted output voltage and current significantly under solar simulator (AM 1.5 G).
Ha Young Lee   +5 more
wiley   +1 more source

A Comparative Study of MINLP and MPVC Formulations for Solving Complex Nonlinear Decision‐Making Problems in Aerospace Applications

open access: yesOptimal Control Applications and Methods, Volume 47, Issue 1, Page 4-23, January/February 2026.
ABSTRACT High‐level decision‐making for dynamical systems often involves performance and safety specifications that are activated or deactivated depending on conditions related to the system state and commands. Such decision‐making problems can be naturally formulated as optimization problems where these conditional activations are regulated by ...
Andrea Ghezzi   +4 more
wiley   +1 more source

Formation of Asteroid (16) Psyche by a Giant Impact

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Asteroid (16) Psyche is the largest likely metal‐rich asteroid in the Solar System and the target of the NASA Psyche mission. The mission aims to determine whether the asteroid is the core of a differentiated planetesimal that lost its mantle via a giant impact.
Saverio Cambioni   +14 more
wiley   +1 more source

Space Weather and Low‐Altitude Drone Economy

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract Unmanned Aerial Vehicles (UAVs) are becoming integral to the emerging low‐altitude economy, operating primarily below 3,000 m for applications such as logistics, inspection, precision agriculture, and urban air mobility. The safe and reliable operation of UAVs depends critically on communication, navigation, and surveillance (CNS) systems ...
Dabin Xue   +3 more
wiley   +1 more source

Task‐Specific Optimal Trajectory Planning of Dual‐arm Space Robot Based on Convex Optimization

open access: yesIET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
This paper presents a robust, task‐specific optimal trajectory planning framework for dual‐arm space robots. The method unifies two key problems—point‐to‐point grasping and continuous trajectory tracking—within an efficient optimization framework. Extensive comparative simulations on a highly redundant 14‐degree‐of‐freedom (14‐DoF) dual‐arm space robot
Run Li, Fan Wu, Ang Li, Ming Liu
wiley   +1 more source

Uranus' Long‐Term Thermospheric Cooling Is Unlikely to Be Primarily Driven by the Solar Wind

open access: yesGeophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Over the last 40 yrs, Uranus' thermospheric temperature has decreased by ∼8 K/yr. Here we show that this is less likely to be driven by solar wind kinetic power than previously thought. We determine that the solar wind kinetic power at Uranus has been increasing since the start of solar cycle 24 in 2009, while Uranus's thermospheric ...
Jamie M. Jasinski   +5 more
wiley   +1 more source

A NASA high-power space-based laser research and applications program [PDF]

open access: yes
Applications of high power lasers are discussed which might fulfill the needs of NASA missions, and the technology characteristics of laser research programs are outlined.
Conway, E. J.   +3 more
core   +1 more source

Magnetoactive Metamaterials: A State‐of‐the‐Art Review

open access: yesAdvanced Engineering Materials, Volume 27, Issue 23, December 2025.
Magnetoactive metamaterials combine magnetoactive composites with architected metastructures to enable contactless, tunable control of mechanical, acoustic, and elastic properties. This review highlights recent advances in their design, fabrication, and applications in soft robotics, biomedical devices, and adaptive structures and outlines future ...
Seyyedmohammad Aghamiri, Ramin Sedaghati
wiley   +1 more source

Ion Propulsion for Spacecraft [PDF]

open access: yes
The theory of the ion-thruster propulsion system is discussed along with the Space Electric Rocket Test 1 and 2. The use of electric propulsion for stationkeeping and attitude control functions of geosynchronous satellites is described, and a comparison ...
Kerslake, W. R.
core   +1 more source

Biological and Biologically Inspired Functional Nanostructures: Insights into Structural, Optical, Thermal, and Sensing Applications

open access: yesAdvanced Materials, Volume 37, Issue 51, December 23, 2025.
Biological and biologically‐inspired functional nanostructures with structural, thermal, optical, and sensing applications are reviewed. The role of nanoscale features in biological materials on performance is described, and their blueprints are used for bio‐inspired nanomaterials, synthesized using advanced techniques (i.e., photolithography, bio ...
Chao Hsuan (Joseph) Sung   +15 more
wiley   +1 more source

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