Results 51 to 60 of about 329,283 (282)

3D Virtual Urban Scene Reconstruction From a Single Optical Remote Sensing Image

IEEE Access, 2019
This paper presents a low-cost and efficient method for 3D virtual urban scene reconstruction based on multi-source remote sensing big data and deep learning.
Suo Li, Zhanyu Zhu, Haipeng Wang, Feng Xu   +3 more
doaj   +1 more source

Electromagnetic wormholes via handlebody constructions

, 2007
Cloaking devices are prescriptions of electrostatic, optical or electromagnetic parameter fields (conductivity $\sigma(x)$, index of refraction $n(x)$, or electric permittivity $\epsilon(x)$ and magnetic permeability $\mu(x)$) which are piecewise smooth ...
A. Greenleaf, A. Greenleaf, A. Greenleaf, A. Greenleaf, A. Greenleaf, Allan Greenleaf, D. Schurig, G. Milton, Gunther Uhlmann, I. Hänninen, J.B. Pendry, J.B. Pendry, M. Lassas, M. Visser, Matti Lassas, P.-S. Kildal, P.-S. Kildal, R. Kohn, S. Hawking, T. Frankel, T. Kilpeläinen, U. Leonhardt, Y. Kurylev, Yaroslav Kurylev   +23 more
core   +3 more sources

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

Comparison of Geometrically Shaped and Probabilistically Shaped Bit-Loading DMT for Optical Interconnect System

IEEE Photonics Journal, 2020
We experimentally demonstrate the transmission performance of the bit-loading discrete multi-tone (DMT) signal in intensity modulation and direct detection (IM-DD) system with a transmission distance of 2km and a net data rate of 108-Gb/s by two ...
Junjie Ding, Jiao Zhang, Jianjun Yu
doaj   +1 more source

On Generating Gravity Waves with Matter and Electromagnetic Waves

, 2008
If a homogeneous plane light-like shell collides head-on with a homogeneous plane electromagnetic shock wave having a step-function profile then no backscattered gravitational waves are produced.
C. Barrabès, C. Barrabès, H. Stephani, I. S. Gradshteyn, N. Rosen, P A. Hogan   +5 more
core   +2 more sources

Stabilization of Miscible Aqueous Phases via Diffusion‐Controlled Multifunctional Nanoparticle‐Ligand Complexation

Advanced Functional Materials, EarlyView.
This study presents a versatile approach to harnessing miscible aqueous domains, enabling liquid‐in‐liquid compartmentalization using a barrier formed in situ rather than bulk immiscibility. The barrier forms upon the complexation of multifunctional nanoparticles and ligands at the contact boundary of aqueous phases.
Seyyed Alireza Hashemi, Mahyar Panahi‐Sarmad, Ahmadreza Ghaffarkhah, Vahid Rad, Masoud Soroush, Thomas P. Russell, Orlando J. Rojas, Mohammad Arjmand   +7 more
wiley   +1 more source

Coarse-to-Fine Joint Distribution Alignment for Cross-Domain Hyperspectral Image Classification

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Domain adaptation (DA) aims to enhance the feature transferability of a model across different domains with feature distribution differences, which has been widely explored in many computer vision tasks such as semantic segmentation and object detection,
Jiajia Miao, Bo Zhang, Bin Wang
doaj   +1 more source

Light polarization oscillations induced by photon-photon scattering

, 2017
We consider the Heisenberg-Euler action for an electromagnetic field in vacuum, which includes quantum corrections to the Maxwell equations induced by photon-photon scattering.
Briscese, Fabio
core   +1 more source

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source

NPA2Net: A Nested Path Aggregation Attention Network for Oriented SAR Ship Detection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Ship detection in synthetic aperture radar (SAR) images is crucial for various applications in both civilian and military domains. In recent years, there has been substantial progress in SAR ship detection, largely driven by advancements in deep learning-
Chunjie Zhang, Peng Liu, Haipeng Wang, Yaqiu Jin   +3 more
doaj   +1 more source