Results 51 to 60 of about 66,086 (316)
Broadband spectral shaping using nematic liquid crystal
Results in Physics, 2019 We demonstrate what is, to our knowledge, the first implementation of nematic liquid crystal (LC) for spectral shaping of broadband light fields. A LC cell of several microns thickness is placed between a polarizer and an analyzer.
Bhaskar Kanseri +2 more
doaj
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 +7 more
doaj +1 more source
Bioactive Glass Microscaffolds Fabricated by Two‐Photon Lithography
Advanced Materials, EarlyView.Microstructuring of bioactive glasses offers great potential to influence cell behavior for bone tissue engineering. By utilizing two‐photon lithography of a nanocomposite and thermal post‐processing, single‐micron features and complex structures are achieved.
Leonhard Hambitzer +7 more
wiley +1 more source
Atmosphere, 2020 The purpose of this work is to measure the ozone vertical distribution (OVD) in the upper troposphere−stratosphere by differential absorption lidar (DIAL) at 299/341 nm and 308/353 nm and to compare and analyze the results against satellite data. А
Sergey Dolgii +4 more
doaj +1 more source
Frontiers in Physics, 2021 In this work, a technique for comparing refractive indices for solutions of low concentrations has been developed. The method of direct spectral detection developed by the authors has been using.
Igor G. Likhachev +2 more
doaj +1 more source
Dynamical Imaging with Interferometry [PDF]
The Astrophysical Journal, 2017 Abstract By linking widely separated radio dishes, the technique of very long baseline interferometry (VLBI) can greatly enhance angular resolution in radio astronomy. However, at any given moment, a VLBI array only sparsely samples the information necessary to form an image.
Katherine L. Bouman +10 more
openaire +7 more sources
Monolithic Terahertz Topological Mach‐Zehnder Interferometer
Advanced Materials, EarlyView.A monolithic topological Mach‐Zehnder interferometer (MZI) is presented, integrating the splitter, combiner, and waveguide arms on a single chip. The interferometric fringes exhibiting high on‐off contrast with extinction ratios over 20 dB are achieved by utilizing tailored unit cells that facilitate interface‐dependent out‐of‐plane radiation losses ...
Nikhil Navaratna +3 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.This review summarizes the development of atomic force microscopy‐based local anodic oxidation technology for patterning 2D materials, discussing its mechanisms, applications in nanolithography and device fabrication, key influencing factors, existing challenges, and future prospects in nano‐designs.
Jing Yu +5 more
wiley +1 more source
Introduction to Interferometry [PDF]
, 1997 This tutorial gives a general introduction to optical and infrared interferometry, specifically addressing two questions: `Can I use VLTI to observe my favourite object?' and `What will it tell me?' The observables measured by an interferometer are fringe visibility and closure phase, which can then be fitted by a model or used to reconstruct an image.
openaire +3 more sources
Bandwidth in bolometric interferometry [PDF]
Astronomy and Astrophysics, 2010 Bolometric Interferometry is a technology currently under development that will be first dedicated to the detection of B-mode polarization fluctuations in the Cosmic Microwave Background. A bolometric interferometer will have to take advantage of the wide spectral detection band of its bolometers in order to be competitive with imaging experiments.
Charlassier, R. +4 more
openaire +5 more sources