Results 101 to 110 of about 306,809 (340)
Advanced Optical Materials, EarlyView.This perspective explores how intrinsic confinement effects in metavalent chalcogenide and pnictogen thin films alter optical and vibrational properties. By comparing thickness‐dependent effects across prototypical systems, this work highlights the role of unconventional bonding in shaping coherent phonon dynamics and dielectric functions, offering new
Felix Hoff, Matthias Wuttig
wiley +1 more source
The applications of satellites to communications, navigation and surveillance for aircraft operating over the contiguous United States. Volume 1 - Technical report [PDF]
Satellite applications to aircraft communications, navigation, and surveillance over US including synthesized satellite network and aircraft equipment for air traffic ...
Craigie, J. H. +3 more
core +1 more source
Chiral Metasurfaces with Multidimensional Tunability for Optical Chiral States
Advanced Optical Materials, EarlyView.A novel bilayer perovskite chiral metasurface enables tunable transitions between BIC‐associated vortex centres and circularly polarized states via rotational symmetry control. Breaking rotational symmetry and applying in situ rotation to the upper layer allows precise, omnidirectional tuning of C points in momentum space. This evolution forms a Möbius‐
Dayang Lin, Abbas Ghaffari, Qing Gu
wiley +1 more source
Determination of Vibrational Population Distribution for the N2+ (1N) Ion Band System from Spacelab 1 [PDF]
Journal of Astronomy and Space Sciences, 1989 The Spacelab 1 data represented the first multiband spectral measurements of the N2+ first negative ion bands system in the thermospheric dayglow, and the first opportunity to make a detailed comparison of the vibrational and rotational distributions ...
Jong Won Eun
doaj
The AMSC mobile satellite system: Design summary and comparative analysis [PDF]
Mobile satellite communications will be provided in the United States by the American Mobile Satellite Consortium (AMSC). Telesat Mobile, Inc. (TMI) and AMSC are jointly developing MSAT, the first regional Mobile Satellite Service (MSS) system. MSAT will
Noreen, Gary K.
core +1 more source
Host Tuned Luminescence Lifetime Thermometers for Imaging Boiling Thermal Dynamics Through Bubbles
Advanced Optical Materials, EarlyView.The bismuth to vanadate distance is adjusted in solid solutions of ytrrium and scandium orthovanadate to design a lifetime‐based luminescence thermometer with optimal temperature resolution at 100 °C. It is applied on the surface of a boiling channel to observe the thermal signatures of bubble growth and liquid film dry‐out.
Sacha Hirsch +9 more
wiley +1 more source
A System Design and Analysis for Satellite Communication Link [PDF]
Journal of Astronomy and Space Sciences, 2000 A satellite RF communication link is analyzed based on a simple fundamental equations by systematic approach in this paper. The number of variables related to a design and analysis of satellite RF link is often a dozen or more, thus it is a tedious and ...
Tae Jin Chung, Jong Won Eun
doaj
Tuning Solid‐State Fluorescence in BODIPY Dyes through Substitution‐Controlled Packing Motifs
Advanced Optical Materials, EarlyView.A systematic structure–property study reveals how substitution patterns in BODIPY dyes control supramolecular packing and solid‐state emission. The interplay of substituent type, packing motif, and π–π overlap governs emission color and efficiency. Abstract Understanding how molecular packing governs solid‐state fluorescence is key to unlocking new ...
Tim Patten +4 more
wiley +1 more source
Recent development and its prospect of satellite communications
Tongxin xuebao, 2015 After analyzing the characteristics of satellite communications,the developing status of communication satellite platform,available frequency resource,as well as the related key techniques are summarized.Through introducing some typical satellite ...
Ke-chu1 YI +3 more
doaj +2 more sources