Results 81 to 90 of about 789,573 (302)

Epitaxially Integrated Electro‐Optic KNbO3 Thin Films on Silicon

open access: yesAdvanced Materials, EarlyView.
We demonstrate the first epitaxial integration of electro‐optic KNbO3 thin films on silicon using suboxide molecular‐beam epitaxy. Combining adsorption‐controlled molecular‐beam epitaxy, advanced characterization, and phase‐field modeling, we demonstrate phase‐pure crystalline films mirroring bulk crystals with robust Pockels response, enabling future ...
Sankalpa Hazra   +17 more
wiley   +1 more source

Surface refractivity measurements at NASA spacecraft tracking sites [PDF]

open access: yes, 1971
High-accuracy spacecraft tracking requires tropospheric modeling which is generally scaled by either estimated or measured values of surface refractivity.
Schmid, P. E.
core  

Multi‐Biomimetic Structural Colors Inspired by Pearls and Bird Feathers

open access: yesAdvanced Materials, EarlyView.
A dual‐biomimetic strategy mimicking pearls and bird feathers is proposed to construct full‐gamut structural colors. By integrating a non‐strictly periodic inorganic multilayer architecture with tunable light absorbers, this facile approach circumvents the complex fabrication of traditional 1D photonic crystals, offering immense potential for cosmetics,
Zhiwei Wang   +12 more
wiley   +1 more source

Some preliminary results of the fine structure profiles of radio refractivity near the surface at Ota, Southwest Nigeria [PDF]

open access: yes, 2013
Some preliminary results are presented of the fine structure profiles of surface radio refractivity, Ns, over Ota, Southwest Nigeria (6° 42'N, 3° 14'E) computed from in-situ, one minute interval measurements of surface pressure, temperature and ...
Omotosho, T. V.   +2 more
core  

Variation of Metrological Parameters as They Affect the Tropospheric Radio Refractivity for Akure South-West Nigeria

open access: yes, 2013
This research work examines the effect of variations of metrological parameters on the tropospheric radio refractivity during dry and raining seasons for Akure in 2013.
Famoriji J.Oluwole
core   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

open access: yesAdvanced 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

Seasonal Variation of Surface Radio Refractivity and Water Vapour Density for 48 Stations in Nigeria [PDF]

open access: yes, 2015
The monthly and seasonal variation of surface refractivity and water vapour density were studied using thirtynine years meteorological data for forty-eight stations in Nigeria.
Omotosho, T. V.   +4 more
core  

Variation of Meteorological Parameters and their Influence on Tropospheric Surface Radio Refractivity in Minna and Yola, Nigeria [PDF]

open access: yes, 2020
The variation of meteorological parameters and their influence on tropospheric surface radio refractivity in Minna (middle belt) and Yola (north east), Nigeria was investigated.
Agbo, G. A, Okoh, D, Onuorah, Loretta O.
core  

An atmospheric refractivity inversion method based on deep learning

open access: yesResults in Physics, 2019
An atmospheric refractivity inversion method based on deep learning is introduced. Atmospheric duct is an anomalous phenomenon of electromagnetic waves in the atmosphere that affects the use of radio equipment, obtaining real-time atmospheric duct ...
Wenlong Tang   +4 more
doaj   +1 more source

Inverse Design of Nanoparticulate Materials

open access: yesAdvanced Materials, EarlyView.
Inverse design shifts nanomaterial development from empirical trial‐and‐error to predictive model‐driven strategies. It can rely on knowledge‐based, data‐based, or hybrid process and property functions. This perspective article provides a practical framework for applying inverse design based on instructive examples. It discusses which modeling approach
Nabi Etienne Traoré   +5 more
wiley   +1 more source

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