Results 51 to 60 of about 829,957 (291)
Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies
Advanced Materials, EarlyView.In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim +5 more
wiley +1 more source
Reponses of middle atmospheric circulation to the 2009 major sudden stratospheric warming
Earth and Planetary Physics, 2020 In this research, the roles of gravity waves and planetary waves in the change to middle atmospheric residual circulation during a sudden stratospheric warming period are differentiated and depicted separately by adopting the downward control principle ...
ShengYang Gu +4 more
doaj +1 more source
Radiative effects of ozone waves on the Northern Hemisphere polar vortex and its modulation by the QBO [PDF]
Atmospheric Chemistry and Physics, 2018 The radiative effects induced by the zonally asymmetric part of the ozone field have been shown to significantly change the temperature of the NH winter polar cap, and correspondingly the strength of the polar vortex.
V. Silverman +4 more
doaj +1 more source
Fiber‐Format Flexible Linear Electrostatic Motors
Advanced Materials, EarlyView.A flexible coaxial fibre‐format electrostatic motor enables backdrivable and reversible linear actuation with high force density and functionality under bending, offering a scalable actuation platform for soft and wearable robotics. ABSTRACT Linear motion is fundamental to robotics, yet existing solutions are either rigid electromagnetic motors or ...
Sylvain Schaller, Herbert Shea
wiley +1 more source
On the new modes of planetary-scale electromagnetic waves in the ionosphere [PDF]
Annales Geophysicae, 2004 Using an analogy method the frequencies of new modes of the electromagnetic planetary-scale waves (with a wavelength of 103 km or more), having a weather forming nature, are found at different ionospheric altitudes.
G. D. Aburjania +4 more
doaj +1 more source
Two types of mirror mode waves in the Kronian magnetosheath
Earth and Planetary Physics, 2023 A mirror mode wave is a fundamental magnetic structure in the planetary space environment that is persistently compressed by solar wind, especially in the magnetosheath.
XinYa Duanmu +3 more
doaj +1 more source
Advanced Materials Interfaces, EarlyView.By analyzing the thermal‐mechanical properties and molecular‐scale interactions in polyacrylamide (PAAM) hydrogels, this research demonstrates a rubber‐glass‐crystal phase transition under the combined stimuli of temperature and moisture. Because of these hybrid phase transitions, PAAM hydrogels exhibit shape memory behavior in thermal and moist ...
Shuai Xu +7 more
wiley +1 more source
Stratospheric control of planetary waves [PDF]
Geophysical Research Letters, 2016 AbstractThe effects of imposing at various altitudes in the stratosphere zonally symmetric circulation anomalies associated with a stratospheric sudden warming are investigated in a mechanistic circulation model. A shift of the tropospheric jet is found even when the anomalies are imposed only above 2 hPa.
Peter Hitchcock, Peter H. Haynes
openaire +1 more source
Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications
Advanced Materials Technologies, EarlyView.Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja +9 more
wiley +1 more source
Global Winds Shape Planetary‐Scale Lamb Waves
Geophysical Research Letters, 2023 In 2022, the Hunga volcano eruption in Tonga generated atmospheric pressure waves that propagated globally and produced tsunamis in all the world's oceans.
Ignacio Sepúlveda +2 more
doaj +1 more source