Results 31 to 40 of about 23,959 (174)

An active fiber sensor for mirror vibration metrology in astronomical interferometers [PDF]

Astronomische Nachrichten, 2009
AbstractWe present a fiber sensor based on an active integrated component which could be effectively used to measure the longitudinal vibration modes of telescope mirrors in an interferometric array. We demonstrate the possibility to measure vibrations with frequencies up to ⋍100 Hz with a precision better than 10 nm (© 2009 WILEY‐VCH Verlag GmbH &
Minardi, S., Chipouline, A., Krämer, S., Pertsch, T., Follert, R., Stecklum, B., Neuhäuser, R.   +6 more
openaire   +2 more sources

Impact of Device Architecture on Proton Detection Efficiency in 2D Perovskite Thick Film Detectors

Small, EarlyView.
This work shows the role of device architecture in MeV proton detection with 2D perovskite thick (> 1 µm) films. A direct comparison between planar and stacked devices demonstrates that the stacked geometry achieves superior response by enabling more efficient charge collection and better exploitation of the active layer volume, ensuring stable and ...
Giulia Napolitano, Sara Cepić, Ilaria Fratelli, Massimo Chiari, Beatrice Fraboni, Laura Basiricò   +5 more
wiley   +1 more source

Astronomical interferometry using continuous variable quantum teleportation

Physical Review Research
We propose a method to build an astronomical interferometer using continuous-variable quantum teleportation to overcome transmission loss between distant telescopes.
Yunkai Wang, Yujie Zhang, Virginia O. Lorenz   +2 more
doaj   +1 more source

2-dimensional in-plane displacement measurement system at fast sampling rate of 5 kHz using sinusoidal phase modulation interferometer

Journal of the European Optical Society-Rapid Publications
Dynamic and high-resolution air fluctuation (wavefront aberration) measurements are necessary for precision interferometry and astronomical observations.
Higuchi Masato, Sato Taku, Aketagawa Masato   +2 more
doaj   +1 more source

Topside Ionospheric Ambipolar Diffusion Derived From ICON Observations

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract The scarcity of ambipolar diffusion observations has constrained our understanding of ionospheric physical processes. We present the first comprehensive analysis of topside ionospheric ambipolar diffusion using the difference between the field‐aligned ion drifts and neutral winds observed by the Ionospheric Connection Explorer (ICON) satellite.
Rongjin Du, Libo Liu, Ruilong Zhang, Wenbo Li, Jing Liu, Bowei Liu, Yiding Chen, Han Ma, Huijun Le   +8 more
wiley   +1 more source

Ground-Based Doppler Asymmetric Spatial Heterodyne Interferometer: Instrument Performance and Thermospheric Wind Observations

Remote Sensing
The thermosphere serves as a pivotal region for Sun–Earth interactions, and thermospheric winds are of great scientific importance for deepening insights into atmospheric dynamics, climate formation mechanisms, and space environment evolution. This study
Zhenqing Wen, Di Fu, Guangyi Zhu, Dexin Ren, Xiongbo Hao, Hengxiang Zhao, Jiuhou Lei, Yajun Zhu, Yutao Feng   +8 more
doaj   +1 more source

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

Advanced Functional Materials, Volume 36, Issue 12, 9 February 2026.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang, Gwendoline A. E. Anand, Rubaiyet Haque, Dylan A. Chiaro, Mona Sharma, Andrew R. Williams, Frank Niklaus, Daryl W. Yee, Gavin M. King, Anpan Han   +9 more
wiley   +1 more source

Exoplanet detection in rotational shearing interferometry through experimental setup and digital filtering techniques

Advanced Optical Technologies
The significant brightness contrast between stars and orbiting planets often hinders the detection of exoplanets. This paper presents the development and validation of an experimental setup and digital filtering techniques for a rotational shearing ...
Manuel Montes-Flores, Guillermo Garcia-Torales, Marija Strojnik   +2 more
doaj   +1 more source

Off-Line, Multi-Detector Intensity Interferometers II: Implications and Applications

, 2006
Intensity interferometry removes the stringent requirements on mechanical precision and atmospheric corrections that plague all amplitude interferometry techniques at the cost of severely limited sensitivity.
A. Ofir, Bartelt, Brown, E. N. Ribak, Sato   +4 more
core   +1 more source

Coherent Spin Waves in Curved Ferromagnetic Nanocaps of a 3D‐Printed Magnonic Crystal

Small, Volume 22, Issue 7, 2 February 2026.
A nanoprinted 3D magnonic woodpile crystal is measured by microresonator ferromagnetic resonance. Micromagnetic simulations are performed to analyze and visualize the detected coherent spin‐wave modes along the nickel‐coated tubes and caps for various field angles. The woodpile exhibits an unexpected phase evolution and robust edge modes.
Huixin Guo, Kilian Lenz, Mateusz Gołębiewski, Ryszard Narkowicz, Jürgen Lindner, Maciej Krawczyk, Dirk Grundler   +6 more
wiley   +1 more source