Results 41 to 50 of about 716,844 (310)

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

The Load Design and Implementation of HJ-1-C Space-borne SAR

Leida xuebao, 2014
HJ-1-C is a Synthetic Aperture Radar (SAR) satellite in the Constellation of “2+1” for China environment and disaster monitoring. It works at S-band with a resolution of 5 m. SAR payload uses a reflector antenna and a high-power concentrated transmitter.
Yu Wei-dong, Yang Ru-liang, Deng Yun-kai, Zhao Feng-jun, Lei Hong   +4 more
doaj   +1 more source

Space-borne Ka-Band Across-Track SAR Interferometer [PDF]

, 2012
The results of an ESA study concerning a future Ka-band SAR mission and instrument concept are reported. One aim of the study has been to explore the feasibility of a future single-platform, across-track interferometric SAR instrument with HRTI-3 ...
Dagazo-Eusebio, Elena, Völker, Michael, Schaefer, Christoph, López-Dekker, Paco, Younis, Marwan, Ludwig, Michael   +5 more
core  

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

A Tandem TerraSAR-X Configuration for Single-Pass SAR Interferometry [PDF]

, 2004
TanDEM-X is a mission proposal for a TerraSAR-X add-on satellite to enable high-resolution single-pass SAR interferometry. The TanDEM-X mission has the goal of generating a global Digital Elevation Model (DEM) with an accuracy corresponding to the DTED-3
Werner, Marian, Hajnsek, Irena, Moreira, Alberto, Settelmeyer, Eckard, Ebner, Hermann, Hounam, David, Krieger, Gerhard, Riegger, Sebastian   +7 more
core  

SIGNAL: Mission Concept and Performance Assessment [PDF]

, 2010
SIGNAL (SAR for Ice, Glacier and oceaN globAL dynamics) is a proposal for an innovative Earth observation mission, under study at German Space Agency.
Villano, Michelangelo, Miller, Heinrich, De Zan, Francesco, Papathanassiou, Kostas, Papathanassiou, Konstantinos P., Hajnsek, Irena, Bamler, Richard, Moreira, Alberto, Rott, Helmut, Börner, Thomas, Krieger, Gerhard, Lopez-Dekker, Paco   +11 more
core   +1 more source

Rubber‐Glass‐Crystal Triple Phase Transition in Polyacrylamide Hydrogels and Environment‐Adaptive Shape Memory Effect

Advanced Materials Interfaces, EarlyView.
By analyzing the thermal‐mechanical properties and molecular‐scale interactions in polyacrylamide (PAAM) hydrogels, this research demonstrates a rubber‐glass‐crystal phase transition under the combined stimuli of temperature and moisture. Because of these hybrid phase transitions, PAAM hydrogels exhibit shape memory behavior in thermal and moist ...
Shuai Xu, Han Li, Wenjing Lu, Yiheng Xue, Jincheng Lei, Linchun He, Yu Chai, Zishun Liu   +7 more
wiley   +1 more source

Advantage Analysis of Spaceborne SAR Imaging in Very Low Earth Orbit: A Case Study of Haishao-1

Remote Sensing
Very-Low Earth Orbit Synthetic Aperture Radar (VLEO SAR) satellites, defined as SAR satellites operating at orbital altitudes 350 km or below, offer distinct technical advantages compared to conventional SAR satellites.
Shenghui Yang, Jili Sun, Hongliang Lu, Shuohan Cheng, Shuai Wang, Wen Sun   +5 more
doaj   +1 more source

Satellite traceology: experience of using in the interests of mammalogy for protection of ice-associated marine mammals

Известия ТИНРО, 2014
Advanced technology of satellite traceology is presented on the base of using the synthetic aperture radar (SAR) with high space and deep resolution installed for the first time onboard Soviet space station Almaz and now functioning successfully onboard ...
Vladimir V. Melentyev, Vladimir I. Chernook, Konstantin V. Melentyev, Alexandr A. Startsev, Tatiyana A. Zakharova   +4 more
doaj   +1 more source

Comparison of Precipitation Effects in Spaceborne X- and Ka-band SAR Imaging [PDF]

, 2009
As the operating frequencies of SAR-systems are increasing, the visible distortions due to precipitation in SAR-images are becoming more frequent. This holds especially for the case of convective rain events.
Chandra, Madhukar, Danklmayer, Andreas, M. Chandra, A. Danklmayer   +3 more
core   +1 more source