Results 41 to 50 of about 14,297 (297)

Near‐Unity Chiral Lasing Enabled by Quasi‐Bound States in the Continuum

Advanced Materials, EarlyView.
Nanoimprinted chiral array that supports bound states in the continuum is doped with an efficient non‐chiral molecule (Rhodamine‐B) acting as gain medium to produce fully circularly polarized lasing emission. The chiral lasing wavelength can be tuned across the emission band of Rhodamine‐B by adjusting the coating thickness of the TiO2 high refractive ...
Jose Mendoza‐Carreño, Luis A. Pérez, Carlota Ruiz De Galarreta, Théo Rouanet, M. Isabel Alonso, Agustín Mihi   +5 more
wiley   +1 more source

A simple graphical technique for conditional long range forecasting of below-average rainfall periods in the Tuvalu Islands, Western Pacific

, 2009
For the Tuvalu Island group in the western Pacific, a simple graphical method is proposed as a means of forecasting whether rainfall totals for the next 1, 2,…,6 months will be below average.
Vavae, Hilia, Bardsley, W. Earl
core   +1 more source

Phase‐Resolved Attribution of Tropical Cyclone Cold Wakes From an Interpretable Data‐Driven Model

Journal of Geophysical Research: Machine Learning and Computation
Tropical cyclones (TCs) generate pronounced sea surface cooling through multiscale air‐sea interactions, yet predicting its full evolution and identifying the governing mechanisms remain challenging. Here we develop TC‐Net, an interpretable deep learning
Yingjie Liu, Dongliang Shen, Haoyu Wang, Yue Wang, Xiaofeng Li, Shanshan Mu   +5 more
doaj   +1 more source

From Aqua MODIS to PACE OCI: Global-Scale Hyperspectral Rrs Reconstruction via Spectral-Attention Conditional GAN

Journal of Remote Sensing
Hyperspectral remote sensing reflectance ([Formula: see text]) is vital for ocean color research. NASA’s Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission provides unprecedented hyperspectral coverage, but its short record limits long-term ...
Xiaolong Li, Yaopu Zhu, Xiaofeng Li
doaj   +1 more source

Facet‐Specific PbS Quantum Dot Passivation Using Halide Perovskites for SWIR Photodetectors

Advanced Materials Interfaces, EarlyView.
PbS quantum dots (QDs) are emerging as powerful short‐wave infrared photodetectors, yet the passivation mechanism of large QDs by perovskites ‐ critical for their stability ‐ remains unexplained. Here, we unveil the ligand structure of CH3NH3PbI3 (MAPI)‐passivated 4‐nm PbS QDs using FTIR, XPS, SEM, NMR, and DFT.
L. Paillardet, M. Gromova, D. Liu, A. S. Vasenko, O. V. Prezhdo, S. Alarab, G. De Paëpe, G. Lefevre, S. Charlot, O. Gourhant, B. Mortini, P. Reiss, J.‐M. Verilhac, D. Aldakov   +13 more
wiley   +1 more source

Wind speed forecasting using Singular Systems Analysis

, 2013
We report on a method to predict wind speeds up to 24 hours ahead using a technique originating in Dynamical Systems and Chaos theory using a signal processing technique known as Singular Systems Analysis.The method predicts wind speeds based on a set of
Fruh, Wolf-Gerrit; id_orcid, C. Skittides, Skittides, Christina, W.-G. Früh   +3 more
core   +1 more source

Contributions of Tropical Cyclones and Internal Tides To Deep Near‐Inertial Kinetic Energy Under Eddy Modulation

Geophysical Research Letters
Near‐inertial waves (NIWs) are essential energy sources for deep diapycnal mixing. However, the mechanisms for generating deep and abyssal NIWs are largely unknown.
Zhixiang Zhang, Jing Gao, Jianing Wang, Fan Wang   +3 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Observed Inhibited Downward Penetration of Wind‐Generated Near‐Inertial Energy in the Bering Sea

Geophysical Research Letters
Near‐inertial waves (NIWs) are energetic in the Bering Sea, but their downward propagation characteristics remain unknown. Here, we first report the penetration of near‐inertial energy generated by distinct synoptic wind forcing events using yearlong ...
Zifei Chen, Zhiwu Chen, Fei Yu, Xingchuan Liu, Jianfeng Wang, Qiang Ren, Yansong Liu, Ran Wang, Feng Nan, Xinyuan Diao, Zhiling Ouyang   +10 more
doaj   +1 more source

Benchmarking Coaxial and Angular Optical Emission Spectroscopy With Recommendations for Reliable Compositional In Situ Monitoring During Laser Powder Bed Fusion

Advanced Materials Technologies, EarlyView.
ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel, Bastian Jülich, Anna Rosa Ziefuss, Florian Eibl, Stephan Barcikowski   +4 more
wiley   +1 more source