Results 91 to 100 of about 4,208,561 (328)

10-km passive drone detection using broadband quantum compressed sensing imaging

Light: Science & Applications
Remote passive drone detection in the presence of strong background noise is challenging, since they are point objects and cannot be recognized by their contour detection.
Shuxiao Wu, Jianyong Hu, Jiaqing Ge, Yanshan Fan, Zhexin Li, Liu Yang, Kai Song, Jiazhao Tian, Zhixing Qiao, Guosheng Feng, Xilong Liang, Changgang Yang, Ruiyun Chen, Chengbing Qin, Guofeng Zhang, Liantuan Xiao, Suotang Jia   +16 more
doaj   +1 more source

Efficient Loading of an Yb MOT on the ¹S₀ → ¹P₁ Transition

Photonics
We demonstrate efficient loading of an Yb three-dimensional magneto-optical trap (3D MOT) on the 1S0 → 1P1 transition. The experiment employs a two-dimensional magneto-optical trap (2D MOT) as an efficient cold atom source. Through optimization of the 2D
Zhufang Zhao, Shunxiang Wang, Jun Jian, Quanxin Zhang, Wenliang Liu, Jizhou Wu, Yuqing Li, Jie Ma   +7 more
doaj   +1 more source

Laser spectroscopy applied to environmental, ecological, food safety, and biomedical research.

Optics Express, 2016
Laser spectroscopy provides many possibilities for multi-disciplinary applications in environmental monitoring, in the ecological field, for food safety investigations, and in biomedicine.
S. Svanberg, Guangyu Zhao, Hao Zhang, Jing Huang, M. Lian, Tianqi Li, Shiming Zhu, Yiyun Li, Z. Duan, Huiying Lin, K. Svanberg   +10 more
semanticscholar   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Observation of nonlinear edge states in an interacting atomic trimer array

Light: Science & Applications
Exploring the interplay between topology and nonlinearity leads to an emerging field of nonlinear topological physics, which extends the study of fascinating properties of topological states to a regime where interactions between the particles cannot be ...
Huiying Du, Hongxing Zhao, Yuqing Li, Yunfei Wang, Rujiang Li, Jizhou Wu, Wenliang Liu, Yiqi Zhang, Liantuan Xiao, Suotang Jia, Jie Ma   +10 more
doaj   +1 more source

Experimental Realization of a Mach–Zehnder-Type Internal-State Atom Interferometer in Sodium Spinor BEC

Photonics
This study demonstrates a Mach–Zehnder-type internal-state atom interferometer in a sodium F = 1 spinor Bose–Einstein condensate (BEC), which is realized by applying a three-pulse radio-frequency sequence (π/2–π–π/2) to manipulate the two magnetic ...
Jun Jian, Zhufang Zhao, Quanxin Zhang, Shunxiang Wang, Wenliang Liu, Jizhou Wu, Yuqing Li, Jie Ma   +7 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Vacuum space charge effect in laser-based solid-state photoemission spectroscopy

, 2010
We report a systematic measurement of the space charge effect observed in the few-ps laser pulse regime in laser-based solid-state photoemission spectroscopy experiments. The broadening and the shift of a gold Fermi edge as a function of spot size, laser
Graf, J., Hellmann, S., Hussain, Z., Jozwiak, C., Kaindl, R. A., Kipp, L., Lanzara, A., Rossnagel, K., Smallwood, C. L.   +8 more
core   +1 more source

Distribution of Electrical Resistivity in Single Carbon Fiber Filaments and Its Correlation With Tensile Modulus

Advanced Engineering Materials, EarlyView.
A statistical framework is applied to quantify the distribution of electrical resistivity among individual filaments of two commercially available carbon fiber types. Correlations between filament resistivity, tensile modulus, and diameter are examined and complemented by TEM analysis to provide new insight into filament‐level variability relevant for ...
Nils Wieja, Daniel Sebastian Wolz, Philip Johannes Steinbild, Markus Löffler, Darius Pohl, Jan Wolf, Anja Winkler, Thomas Behnisch, Bernd Rellinghaus, Maik Gude   +9 more
wiley   +1 more source

A monolithically integrated near-infrared imager with crystallization- and oxidation-modulated tin-lead perovskites

Light: Science & Applications
The fast crystallization and facile oxidation of Sn2+ of tin-lead (Sn-Pb) perovskites are the biggest challenges for their applications in high-performance near-infrared (NIR) photodetectors and imagers.
Zhichun Yang, Jingjing Liu, Haotian Bao, Zonghao Liu, Zaiwei Wang, Xiangdong Li, Zhihao Chen, Guofeng Zhang, Ruiyun Chen, Jianyong Hu, Shuangping Han, Wei Chen, Chengbing Qin, Liantuan Xiao, Suotang Jia   +14 more
doaj   +1 more source