Results 51 to 60 of about 6,104,035 (281)

Emergence of a Hexagonal Fe2S2 Single Layer Without a Bulk Counterpart via Phase Transformation

Advanced Functional Materials, EarlyView.
Upon annealing, single‐layer Mackinawite iron sulfide transforms into a previously unknown hexagonal Fe2S2${\rm Fe}_2{\rm S}_2$ phase with β$\beta$‐CuI structure. STM, LEED, and first‐principles calculations identify the structure and show that electronic correlations and magnetic order are important for its stability.
Affan Safeer, Wejdan Beida, Felix Oberbauer, Nicolae Atodiresei, Gustav Bihlmayer, Max Wolfertz, Chiara Schlichte, Wouter Jolie, Stefan Blügel, Jeison Fischer, Thomas Michely   +10 more
wiley   +1 more source

A Simple Photonic System for DFS and AOA Simultaneous Measurement

Photonics, 2022
A simple photonics-based dual-channel system is proposed to simultaneously measure the Doppler frequency shift (DFS) and angle of arrival (AOA) of microwave signals.
Xintong Li, Jinming Tao, Jinye Li, Qianqian Jia, Chaoquan Wang, Jianguo Liu   +5 more
doaj   +1 more source

A nonlinear suppression technique for range ambiguity resolution in pulse Doppler radars [PDF]

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200), 2002
This paper reintroduces a novel range ambiguity resolution technique, invented by Palermo (1962), called nonlinear suppression. A set of M unique modulations is selected which have desirable (mutually dispersive) cross-correlation properties. The transmitted pulse train is constructed by successively modulating each pulse with one of the M modulations.
Anderson, J. M., Temple, M. A., Brown, W. M., Crossley, B. L.   +3 more
openaire   +1 more source

Low‐Flicker‐Noise MoS2 Transistors Enabled by High‐κ Rare‐Earth Oxychlorides for Mixed‐Signal Electronics

Advanced Functional Materials, EarlyView.
Single‐crystalline LaOCl and GdOCl form atomically abrupt, Cl‐terminated interfaces with MoS2, enabling near‐ideal switching and suppressed flicker noise. Carrier‐number‐fluctuation analysis yields effective noise‐derived interface trap densities of 1.15–1.94 × 1010 cm−2 eV−1, approaching hexagonal boron nitride levels with high‐κ coupling.
Chanho Lee, Changwoo Pyo, Seungchan Lee, Juho Son, Yoongi Cho, Jiho Shin, Sungmoon Park, Sungjin Kim, Changmin An, Heein Yoon, Myungsoo Kim   +10 more
wiley   +1 more source

A 3D Blur Suppression Method for High-Resolution and Wide-Swath Blurred Images Based on Estimating and Eliminating Defocused Point Clouds

Remote Sensing
Traditional single-channel Synthetic Aperture Radar (SAR) cannot achieve high-resolution and wide-swath (HRWS) imaging due to the constraint of the minimum antenna area.
Yuling Liu, Fubo Zhang, Longyong Chen, Tao Jiang   +3 more
doaj   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Ambiguity Function Analysis and Processing for Passive Radar Based on CDR Digital Audio Broadcasting

Leida xuebao, 2015
China Digital Radio (CDR) broadcasting is a new standard of digital audio broadcasting of FM frequency (87–108 MHz) based on our research and development efforts.
Zhang Qiang, Wan Xian-rong, Fu Yan, Rao Yun-hua, Gong Zi-ping   +4 more
doaj   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Range Ambiguity Smearing and Suppression: Comparison of Different Azimuth Phase Codes and Opportunities from Multi-Focus Post-Processing [PDF]

, 2021
Synthetic Aperture Radar (SAR) remote sensing has become very attractive in Earth observation applications, since it provides high resolution imaging independent of weather conditions and sunlight illumination.
Villano, Michelangelo, Dell Amore, Luca, Nogueira Peixoto, Maxwell, Krieger, Gerhard   +3 more
core  

Tolerance for ambiguity, reappraisal, and suppression mediate the relationship between problematic internet use and procrastination

, 2022
The current scientific literature lacks studies on the relationship between problematic internet use (PIU) and procrastination, especially regarding the mediating mechanisms underlying this relationship. The present study examined the association between
Hasani, Jafar, Kuss, Daria J., Daria J. Kuss, Jafar Hasani, Fatemeh Shahrajabian, Seyed Javad Emadi Chashmi, Griffiths, Mark D., Mark D. Griffiths, Emadi Chashmi, Seyed Javad, Shahrajabian, Fatemeh   +9 more
core   +1 more source