Results 71 to 80 of about 38,828 (266)

Large‐Area Flat Optics Color Routing in Tilted Arrays of 2D Semiconductor Nanostripes

Advanced Optical Materials, EarlyView.
We develop a scalable flat optics platform exploiting self‐organised ion‐beam sputtering and maskless glancing‐angle deposition to fabricate centimetre‐scale arrays of tilted MoS2 nanostripes. The engineered geometry activates Rayleigh anomalies, guided modes, and Mie resonances, enabling highly directional color routing and enhanced light harvesting ...
Simone Di Marco, Daniele Ceneda, Matteo Barelli, Matteo Gardella, Rajesh Chennuboina, Maria C. Giordano, Marco Centini, Francesco Buatier de Mongeot   +7 more
wiley   +1 more source

Helicity‐Dependent All‐Optical Switching in Bi,Ga‐Substituted Rare‐Earth Iron Garnet Films Driven by Orbital Magnetic Moment

Advanced Optical Materials, EarlyView.
Helicity‐dependent all‐optical magnetization switching was demonstrated for the Bi‐ and Ga‐substituted rare‐earth (R) iron garnet crystal thin films (Bi,Ga:RIG; R = Eu3+, Nd3+, and Y3+). The efficiency followed the order EIG > NIG > YIG. These results show the correlation between 4f orbital moment (4f〈L〉) of R3+ and helicity‐dependent optical ...
Ayumu Hata, Ryuichiro Asatani, Saiki Suzuki, Md Abdullah Al Masud, Hotaka Sakaguchi, Jun Okabayashi, Shinji Isogami, Takayuki Ishibashi   +7 more
wiley   +1 more source

Pointlike Material Accumulation and Displacement in Azopolymer Thin Films Driven by Spatial Light Modulation

Advanced Optical Materials, EarlyView.
A maskless, SLM‐driven approach enables the deterministic inscription of arbitrary topographical features in azopolymer films by mapping complex vectorial light fields onto local viscoplastic stress. This platform allows for the rapid generation and dynamic erasure of high‐aspect‐ratio micro‐spikes, offering a versatile tool for reconfigurable flat ...
Jonas Strobelt, Nikolai Liubimtsev, Marina Saphiannikova, Svetlana Santer   +3 more
wiley   +1 more source

Proactive handover optimization via multi-agent deep reinforcement learning in integrated LEO satellite–terrestrial networks for high-mobility terminals

ETRI Journal
This paper proposes a predictive handover decision framework for optimizing handover planning in integrated low Earth orbit (LEO) satellite–terrestrial networks.
Huiyeon Jang, Junyoung Kim, In-Sop Cho, Minsu Shin, Joon Gyu Ryu, Soyi Jung   +5 more
doaj   +1 more source

Space Activities and the Simultaneous Development of the Economy in Türkiye

Düzce Üniversitesi Bilim ve Teknoloji Dergisi
As space technologies have become an integral part of our daily lives, they have profoundly influenced the course of human civilization since 1957. These technologies have provided humanity with many remarkable insights. Therefore, they have an important
Nedim Sözbir, Murat Bulut, Lokman Kuzu, Şenol Gülgönül, Osman Dur   +4 more
doaj   +1 more source

An Examination of the Cs2NaInCl6 Luminescence: Interplay of Self‐Generated In+ and Doped Sb3+, Er3+/Yb3+ Ions

Advanced Optical Materials, EarlyView.
A new luminescence mechanism in Cs2NaInCl₆ is revealed through spontaneously formed In3+→In+ centers and Er3+/Yb3+/Sb3+ doping. Tunable visible, near‐infrared, downconversion, and upconversion emissions are demonstrated, while DFT calculations explain the electronic structure.
Inna A. Ivashchenko, Alicja Szymska‐Szymanik, Lubomir D. Gulay, Alexander Eich, Galina Gurieva, Susan Schorr, Karina V. Lamonova, Marcin Nyk, Malgorzata Makowska‐Janusik, Benjamin González‐Diaze, Katarzyna Matras‐Postołek   +10 more
wiley   +1 more source

Deep Metric Learning for Fine-Grained Ship Classification in SAR Images with Sidelobe Interference

Remote Sensing
The interference of sidelobe often causes different targets to exhibit similar features, diminishing fine-grained classification accuracy. This effect is particularly pronounced when the available data are limited. To address the aforementioned issues, a
Haibin Zhu, Yaxin Mu, Wupeng Xie, Kang Xing, Bin Tan, Yashi Zhou, Zhongde Yu, Zhiying Cui, Chuang Zhang, Xin Liu, Zhenghuan Xia   +10 more
doaj   +1 more source

Chalcogen Alloy‐Engineered Te2Se/Si Heterojunctions for Low‐Noise Complementary Metal‐Oxide Semiconductor‐Compatible Short‐Wave Infrared Imaging

Advanced Optical Materials, EarlyView.
A Te2Se/Si heterojunction designed through atomistic simulations reduces oxide‐related traps, dark current, and noise compared with pure tellurium devices. This CMOS‐compatible platform enables short‐wave infrared detection and high‐contrast imaging in a 14 × 14 array, highlighting a scalable strategy for robust, low‐noise SWIR photodetectors and image
Byeongjin Park, Sieun Yun, Seock‐Jin Jeong, Euiyoung Choi, Min Cheol Kim, Jun Woo Kim, Seongmo Kang, Jiwoo Kim, Jongwon Yoon, Jaejun Jo, Hyun‐Soo Ra, Soon‐Yong Kwon, Han Seul Kim, Yonghun Kim   +13 more
wiley   +1 more source

Heteroleptic Ag(I) Complexes Bearing Benzothiazole and Benzoxazole Ligands for Orange‐Red Light‐Emitting Electrochemical Cells

Advanced Optical Materials, EarlyView.
Light‐emitting Electrochemical Cells (LECs) are appealing electroluminescent devices with potential application in low‐cost, large‐area display technology and disposable devices. In the manuscript, a novel family of bright photo‐ and electro‐active heteroleptic silver(I) is presented and comprehensively investigated.
Valerio Giuso, Jing‐Yuan Zhuang, Christophe Gourlaouen, Cristina Cebrián, Hai‐Ching Su, Matteo Mauro   +5 more
wiley   +1 more source

Sub‐Diffraction and Irreversibly Tunable Imaging With Potato Starch Lenses

Advanced Optical Materials, EarlyView.
Native potato starch granules function as sustainable birefringent microlenses that enable polarization‐controlled conventional and vortex lensing via spin‐to‐orbital angular momentum conversion. They provide sub‐diffraction and spiral‐contrast imaging, support vortex‐array generation with controllable topological‐charge sign, exhibit irreversible ...
Petr Bouchal, Jiří Liška, Petr Viewegh, Radim Chmelík, Tomáš Šikola, Zdeněk Bouchal   +5 more
wiley   +1 more source