Results 51 to 60 of about 416,141 (287)

Method and Implementation of High-speed Digital Sampling Technology Based on Impulse Radar Signal

Leida xuebao, 2012
A High-speed digital sampling technology suitable for periodical impulse radar signal is proposed in this paper. One bit high-speed quantize is constructed by differential comparator in FPGA. Time-interleaved digital sampling and buffer encoding are used
Shen Shao-xiang, Ye Sheng-bo, Fang Guang-you   +2 more
doaj   +1 more source

Three‐dimensional Antimony Sulfide Based Flat Optics

Advanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang, Uwe Hübner, Anne Gärtner, Tao Chen, Joseph Köbel, Franka Jahn, Daniel Repp, Abhrodeep Dey, Henrik Schneidwind, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Matthias Zeisberger, Tanveer Ahmed Shaik, Astrid Bingel, Markus A. Schmidt, Jer‐Shing Huang, Ulf Peschel, Volker Deckert   +18 more
wiley   +1 more source

An Anti-2D Deceptive Jamming Method for Bistatic SAR Based on Jammer Localization

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) is an essential instrument for Earth observation but is vulnerable to intentional electromagnetic jamming during imaging. Two-dimensional (2-D) deceptive jamming can introduce highly realistic false targets into SAR images,
Jiale Zhang, Wenqiang Huang, Wei Lu, Yicai Ji, Xiaojun Liu, Guangyou Fang   +5 more
doaj   +1 more source

Laser-driven high-power X- and gamma-ray ultra-short pulse source

, 2008
A novel ultra-bright high-intensity source of X-ray and gamma radiation is suggested. It is based on the double Doppler effect, where a relativistic flying mirror reflects a counter-propagating electromagnetic radiation causing its frequency ...
A. G. Zhidkov, A. S. Pirozhkov, F. V. Hartemann, M. Kando, R. W. Hockney, S. V. Bulanov, S. Wolfram, T. Zh. Esirkepov   +7 more
core   +2 more sources

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source

Log-moment estimators of the Nakagami-lognormal distribution

EURASIP Journal on Wireless Communications and Networking, 2019
In this paper, estimators of the Nakagami-lognormal (NL) distribution based on the method of log-moments have been derived and thoroughly analyzed. Unlike maximum likelihood (ML) estimators, the log-moment estimators of the NL distribution are obtained ...
Juan Reig, Conor Brennan, Vicent M. Rodrigo Peñarrocha, Lorenzo Rubio   +3 more
doaj   +1 more source

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

Advanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng, Chun‐Hao Chiang, Sunhao Shi, Jui‐Han Fu, Yen‐Ju Wu, Kuniaki Konishi, Vincent Tung, Chun‐Wei Chen, Ya‐Lun Ho   +8 more
wiley   +1 more source

Blackbody Radiation and the Scaling Symmetry of Relativistic Classical Electron Theory with Classical Electromagnetic Zero-Point Radiation

, 2009
It is pointed out that relativistic classical electron theory with classical electromagnetic zero-point radiation has a scaling symmetry which is suitable for understanding the equilibrium behavior of classical thermal radiation at a spectrum other than ...
D.C. Cole, D.G. Currie, E.A. Power, H. Goldstein, H.A. Lorentz, J.D. Jackson, J.H. Vleck van, L. Pena de la, L. Rosenfeld, M. Born, R. Blanco, R. Blanco, R. Eisberg, R. Reif, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.H. Boyer, T.W. Marshall, T.W. Marshall, T.W. Marshall, Timothy H. Boyer   +28 more
core   +1 more source

Through Diamond Robust Surface Enhanced Raman Spectroscopy

Advanced Functional Materials, EarlyView.
Thin film diamond growth offers a unique opportunity for Surface Enhanced Raman Spectroscopy (SERS); the encapsulation of plasmonic nanostructures within a transparent, chemically stable, and physically robust coating. The diamond acts as both a window and protective layer, enabling illumination of the plasmonic nanostructures through the diamond ...
Kieran N. Twaddle, Rebecca J. Watkins, Ralph J. Moors, Massimiliano L.A. Ramsay, Richard B. Jackman   +4 more
wiley   +1 more source

A Stereolithography Appearance-Based Ultra-Wideband Wide-Beam Dielectric Resonator Antenna

Sensors
This paper presents a comprehensive study on the design, fabrication, and characterization of ultra-wideband (UWB) wide-beam dielectric resonator antennas (DRAs) using stereolithography (SLA)-based 3D printing technology.
Chenyang Song, Yubing Yuan, Shengbo Ye, Zihao Wang, Qunying Zhang, Xiaojun Liu, Guangyou Fang   +6 more
doaj   +1 more source