Results 81 to 90 of about 217,614 (319)

Applicability of a Recreational-Grade Interferometric Sonar for the Bathymetric Survey and Monitoring of the Drava River

ISPRS International Journal of Geo-Information, 2020
Sonar survey of shallow water bodies has challenged scientists for a long time. Although these water courses are small, still they have an increasing ecological, touristic and economical role.
Ákos Halmai, Alexandra Gradwohl–Valkay, Szabolcs Czigány, Johanna Ficsor, Zoltán Árpád Liptay, Kinga Kiss, Dénes Lóczy, Ervin Pirkhoffer   +7 more
doaj   +1 more source

Interferometry from Space: A Great Dream

, 2014
During some thirty years, 1980-2010, technical studies of optical interferometry from instruments in space were pursued as promising for higher spatial resolution and for higher astrometric accuracy.
Høg, Erik
core  

Outdoor Stability of 518 cm2 Active Area Screen‐Printed Mesoscopic Carbon‐Based Perovskite Solar Modules Over 12 Months

Advanced Materials Technologies, EarlyView.
Mesoscopic carbon‐based perovskite solar cells (C‐PSCs) offer a pathway to stable, scalable, low‐cost photovoltaics via commercially mature fabrication methods. While their potential lifespan has been demonstrated under standardized conditions, few studies examine the behavior of large‐area modules exposed to real‐world environments. Here, 12 months of
Sarah‐Jane Potts, Rebecca Bolton, Carys Worsley, Tom Griffiths, Luke Ardolino, Kathryn Lacey, Ershad Parvazian, Eifion Jewell, Trystan Watson   +8 more
wiley   +1 more source

Interferometry of ionospheric E-region irregularities based on Kunming VHF radars

Frontiers in Astronomy and Space Sciences
There is a long history of using VHF radar systems to detect ionospheric irregularities based on the theory of coherent scattering. According to previous work, there is a high occurrence of field-aligned irregularities (FAIs) in the ionospheric E-region ...
Bo Chen, Yihao Xu, Chen Zhou, Yuqiang Zhang, Yi Liu, Tong Xu, Bin Xu, Jian Feng, Ting Lan, Haiyin Qing, Zhongxin Deng, Xiang Wang, Xiang Wang, Xinmiao Zhang   +13 more
doaj   +1 more source

The Use of C-/X-Band Time-Gapped SAR Data and Geotechnical Models for the Study of Shanghai’s Ocean-Reclaimed Lands through the SBAS-DInSAR Technique

Remote Sensing, 2016
In this work, we investigate the temporal evolution of ground deformation affecting the ocean-reclaimed lands of the Shanghai (China) megacity, from 2007 to 2016, by applying the Differential Synthetic Aperture Radar Interferometry (DInSAR) technique ...
Antonio Pepe, Manuela Bonano, Qing Zhao, Tianliang Yang, Hanmei Wang   +4 more
doaj   +1 more source

Recent Progress in X-ray and Neutron Phase Imaging with Gratings

Quantum Beam Science, 2020
Under the JST-ERATO project in progress to develop X-ray and neutron phase-imaging methods together, recent achievements have been selected and reviewed after describing the merit and the principle of the phase imaging method.
Atsushi Momose, Hidekazu Takano, Yanlin Wu, Koh Hashimoto, Tetsuo Samoto Masato Hoshino, Yoshichika Seki, Takenao Shinohara   +6 more
doaj   +1 more source

Particle Size Matters – Impact of Particle Size and Crucible Geometry on Sublimation Behavior of Formamidinium Iodide

Advanced Materials Technologies, EarlyView.
FAI precursor particle size and sublimation crucible geometry critically determine vapor flux directionality and deposition uniformity in thermal sublimation processes. Conical crucibles exhibit particle‐size‐dependent beam focusing, while cylindrical crucibles show a much more homogeneous deposition due to de‐focusing effects of the emitted vapor flux.
Alexander Diercks, Julian Petry, Thomas Feeney, Richard Thelen, Paul Fassl, Ulrich W. Paetzold   +5 more
wiley   +1 more source

Light incoherence due to quantum-gravitational fluctuations of the background space

, 2009
Based on the theory of mutual coherence of light from an extended incoherent quasi-monochromatic source (providing a basis of stellar interferometry) we estimate the degree of light incoherence due to quantum-gravitational fluctuations of the background ...
Adler, Ahluwalia, Alden Mead, Alden Mead, Amati, Amelino-Camelia, Amelino-Camelia, Ashtekar, Bekenstein, Bekenstein, Born, Bousso, Bousso, Bousso, Christiansen, Coule, Doplicher, Flanagan, Garay, Gross, Guida, Hopkins, Hopkins, Jack Ng, Janossy, Janossy, Konishi, Károlyházy, Károlyházy, Károlyházy, Li, Lieu, Maggiore, Maggiore, Maggiore, Maziashvili, Maziashvili, Michael Maziashvili, Ng, Padmanabhan, Ragazzoni, Rovelli, Sasakura, Scardigli, Seiberg, Steinbring, Thiemann, van Cittert, van Cittert, Veneziano, Yoneya, Yoneya, Zernike   +52 more
core   +1 more source

Group Delay Dispersion Measurements on Mid‐Infrared Supermirrors

Advanced Optical Materials, EarlyView.
Group delay dispersion of novel semiconductor‐based optics is measured in the mid‐infrared spectral range (2.5 to 4.8 μm$\rm \umu{\rm m}$). Comparisons are made between simulations, measurements conducted with a home‐built white light interferometer, and measurements performed with a commercially available FTIR.
Ulrich Galander, Maximilian Prinz, Lukas W. Perner, Oliver H. Heckl   +3 more
wiley   +1 more source

Collisional decoherence observed in matter wave interferometry

, 2003
We study the loss of spatial coherence in the extended wave function of fullerenes due to collisions with background gases. From the gradual suppression of quantum interference with increasing gas pressure we are able to support quantitatively both the ...
Anton Zeilinger, B. Brezger, Björn Brezger, E. Joos, G. C. Maitland, J. O. Hirschfelder, Klaus Hornberger, Lucia Hackermüller, M. Scully, M. Tegmark, Markus Arndt, R. Penrose, S. Maruyama, Stefan Uttenthaler, W. H. Zurek   +14 more
core   +1 more source