Results 11 to 20 of about 5,766 (246)

The Truth on Gravity and Terrestrial Global Warming. Part 1: The Quantum Gravity Field [PDF]

INCAS Bulletin, 2022
Although during the last century both experimental and computational technology progress has accumulated solid factual information on the deeper knowledge of our actual world, the previous approaches derived in most cases from the unfinished Einstein’s ...
Horia DUMITRESCU, Vladimir CARDOS, Radu BOGATEANU   +2 more
doaj   +1 more source

Space Object and Background Polarization Models and Detectability Analysis

Applied Sciences, 2022
During the daytime, the commonly used optical intensity imaging techniques for spacecraft detection usually lead to poor detection due to strong background noise.
Qiang Fu, Feng Zhao, Hongyi Chen, Rui Zhu, Yingchao Li   +4 more
doaj   +1 more source

Verification of Polarization Matching on the Hologram Recording Plane for the Implementation of an Optimized Digital Hologram Printing System

Frontiers in Physics, 2022
Conventional studies on digital hologram printer have mainly been conducted on image generation and reconstruction such as multi-view image generation method, computer-generated hologram (CGH) and a method of displaying a wave-front for a 3D object ...
Leehwan Hwang, Jongho Jeong, Cheolyoung Go, Philippe Gentet, Jungho Kim, Soonchul Kwon, Seunghyun Lee   +6 more
doaj   +1 more source

Giant piezoelectric response in Ho-doped PbMg1/3Nb2/3TiO3 relaxor ferroelectric single crystals via in-situ neutron scattering

Materials Today Advances, 2023
The complex chemical and structural heterogeneity of relaxor ferroelectrics has made the origins of the giant piezoresponse extremely difficult to understand. Here, we successfully grew Ho-doped Pb(Mg1/3Nb2/3)O3–PbTiO3 (Ho-PMNT) single crystals with even
Yuanhao Lu, Juping Xu, Baisheng Ma, Linan An, Wen Yin, Ying Liu, Tao Li   +6 more
doaj   +1 more source

STUDY OF BIREFRINGENCE INFLUENCE ON IMAGE QUALITY OF PHOTOLITHOGRAPHY SYSTEMS IN VIEW OF PARTIALLY-COHERENT LIGHT SOURCE [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2015
Subject of study. A vector model for conversion of electromagnetic radiation in optical systems is considered, taking into account the influence of birefringence, as well as partially coherent illumination. Model.
E. A. Nikulina, V. A. Zverev
doaj   +1 more source

MAXPEEM: a spectromicroscopy beamline at MAX IV laboratory

Journal of Synchrotron Radiation, 2023
MAXPEEM, a dedicated photoemission electron microscopy beamline at MAX IV Laboratory, houses a state-of-the-art aberration-corrected spectroscopic photoemission and low-energy electron microscope (AC-SPELEEM). This powerful instrument offers a wide range
Yuran Niu, Nikolay Vinogradov, Alexei Preobrajenski, Claudia Struzzi, Brice Sarpi, Lin Zhu, Evangelos Golias, Alexei Zakharov   +7 more
doaj   +1 more source

Wide field of view and full Stokes polarization imaging using metasurfaces inspired by the stomatopod eye

Nanophotonics, 2023
Wide field of view and polarization imaging capabilities are crucial for implementation of advanced imaging devices. However, there are still great challenges in the integration of such optical systems.
Liu Jianying, Chu Jinkui, Zhang Ran, Liu Rui, Fu Jiaxin   +4 more
doaj   +1 more source

Aberration corrected STEM techniques to investigate polarization in ferroelectric domain walls and vortices

APL Materials, 2021
Ferroelectric domain wall (DW) based nano-electronics is an emerging new field of research. It is only recently with advancements in electron and atomic force microscopy instrumentation that the complex nature of these 2D entities can be probed.
Kalani Moore, Ursel Bangert, Michele Conroy   +2 more
doaj   +1 more source

Broadband achromatic mid-infrared metalens with polarization-insensitivity

AIP Advances, 2022
Metasurfaces have shown excellent ability in manipulating light fields. However, the intrinsic chromatic aberration impairs the quality of their broadband operation, which is a serious problem restricting the application of metadevices, especially ...
Chenchen Sha, Wenhui Xiong, Baifu Zhang, Jianping Ding   +3 more
doaj   +1 more source

Polarization compensation of Fresnel aberrations in telescopes [PDF]

SPIE Proceedings, 2011
Large aperture space telescopes are built with low F# s to accommodate the mechanical constraints of launch vehicles and to reduce resonance frequencies of the on-orbit system. Inherent with these low F# s is Fresnel polarization which affects image quality.
Clark, Natalie, Breckinridge, James B.
openaire   +2 more sources