Results 31 to 40 of about 2,104,910 (277)
Direct absorption imaging of ultracold polar molecules
, 2010 We demonstrate a scheme for direct absorption imaging of an ultracold ground-state polar molecular gas near quantum degeneracy. A challenge in imaging molecules is the lack of closed optical cycling transitions.
B. Neyenhuis +8 more
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High-Contrast Imaging: Hide and Seek with Exoplanets
GalaxiesSo far, most of the about 5700 exoplanets have been discovered mainly with radial velocity and transit methods. These techniques are sensitive to planets in close orbits, not being able to probearge star–planet separations.
Riccardo Claudi, Dino Mesa
doaj +1 more source
Direct electric field imaging of graphene defects
Nature Communications, 2018 Imaging chemical bonding states in defective graphene is important to determine its functional properties. Here, the authors report triangular and rectangular atomic electric fields in monolayer graphene induced by silicon as imaged by differential phase
Ryo Ishikawa +6 more
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A candidate material EuSn2As2-based terahertz direct detection and imaging
npj 2D Materials and Applications, 2022 Exploring the photoelectric performance of emerging materials represented by graphene, black phosphorus and transition metal dichalcogenides is attracting enormous research interest for a wide range of electronic and photonic applications.
Changlong Liu +12 more
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Technical Points and Imaging Parameters of CT Lymphangiography
CT Lilun yu yingyong yanjiu, 2022 CT lymphangiography (CTL) is a multimodal imaging method combining direct lymphangiography (DLG) and MSCT. It is an important imaging technology for the diagnosis of lymphatic reflux disorders.
Wei FAN +5 more
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Direct Ultraviolet Imaging and Spectroscopy of Betelgeuse
, 2013 Direct images of Betelgeuse were obtained over a span of 4 years with the Faint Object Camera on the Hubble Space Telescope. These images reveal the extended ultraviolet continuum emission (about 2 times the optical diameter), the varying overall ...
Dupree, A. K., Stefanik, R. P.
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Optically gated beating-heart imaging [PDF]
, 2014 The constant motion of the beating heart presents an obstacle to clear optical imaging, especially 3D imaging, in small animals where direct optical imaging would otherwise be possible.
Taylor, Jonathan M.
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PhotonicsThis article presents a novel approach to actively compensate wavefront errors in both phase and amplitude using a Liquid Crystal Spatial Light Modulator (LC-SLM) for direct exoplanet imaging.
Andrey Yudaev +5 more
doaj +1 more source
, 2017 The distance between two point light sources is difficult to estimate if that distance is below the diffraction (Rayleigh's) resolution limit of the imaging device. A recently proposed technique enhances the precision of this estimation by exploiting the
Lvovsky, Alexander I. +4 more
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A new sub-stellar companion around the young star HD 284149
, 2014 Even though only a handful of sub-stellar companions have been found via direct imaging, each of these discoveries has had a tremendous impact on our understanding of the star formation process and the physics of cool atmospheres.
Bonavita, Mariangela +5 more
core +1 more source