Results 21 to 30 of about 891 (131)

Photoradical‐Mediated Catalyst‐Independent Protein Cross‐Link with Unusual Fluorescence Properties

ChemBioChem, Volume 24, Issue 17, September 1, 2023., 2023
Reversible photo‐activation of aryl residues solely with UV‐irradiation at 282 nm in membrane and soluble proteins produces an unusual fluorophore with red‐shifted fluorescence with emission of 430 nm. Abstract Photo‐actively modified natural amino acids have served as lucrative probes for precise mapping of the dynamics, interaction networks, and ...
Jinam Ravindra Bora, Radhakrishnan Mahalakshmi   +1 more
wiley   +1 more source

Polarization Radiometric Calibration in Laboratory for a Channeled Spectropolarimeter

Applied Sciences, 2020
The process of radiometric calibration would be coupled with the polarization properties of an optical system for spectropolarimetry, which would have significant influences on reconstructed Stokes parameters.
Wenhe Xing, Xueping Ju, Jian Bo, Changxiang Yan, Bin Yang, Shuyan Xu, Junqiang Zhang   +6 more
doaj   +1 more source

Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis

The Astronomical Journal, 2023
The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M _⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun.
Travis S. Metcalfe, Derek Buzasi, Daniel Huber, Marc H. Pinsonneault, Jennifer L. van Saders, Thomas R. Ayres, Sarbani Basu, Jeremy J. Drake, Ricky Egeland, Oleg Kochukhov, Pascal Petit, Steven H. Saar, Victor See, Keivan G. Stassun, Yaguang Li, Timothy R. Bedding, Sylvain N. Breton, Adam J. Finley, Rafael A. García, Hans Kjeldsen, Martin B. Nielsen, J. M. Joel Ong, Jakob L. Rørsted, Amalie Stokholm, Mark L. Winther, Catherine A. Clark, Diego Godoy-Rivera, Ilya V. Ilyin, Klaus G. Strassmeier, Sandra V. Jeffers, Stephen C. Marsden, Aline A. Vidotto, Sallie Baliunas, Willie Soon   +33 more
doaj   +1 more source

Silicon Channeled Spectropolarimeter for On‐Chip Single‐Detector Stokes Spectroscopy

Advanced Photonics Research, 2022
Compact and low‐cost spectropolarimeters are desirable in many fields for probing the wavelength‐dependent polarization state of light. Conventional spectropolarimetry systems use bulky, free‐space optical components or require at least four ...
Zhongjin Lin, Huijie Wang, Simon Bélanger-de Villers, Qifeng Li, Wei Shi   +4 more
doaj   +1 more source

SPECTROPOLARIMETRY OF β Cephei TYPE STAR γ Pegasi

Odessa Astronomical Publications, 2017
Results of an intensive spectropolarimetric study of the small-amplitude purely radial pulsating β Cephei- type star γ Pegasi are presented. It was shown that residual intensity, full width at half maximum and equivalent width of the He I 6678 line vary
V. V. Butkovskaya
doaj   +1 more source

Optical Spectropolarimetry of Binary Asteroid Didymos–Dimorphos before and after the DART Impact

The Astrophysical Journal Letters, 2023
We have monitored the Didymos–Dimorphos binary asteroid in spectropolarimetric mode in the optical range before and after the DART impact. The ultimate goal was to obtain constraints on the characteristics of the ejected dust for modeling purposes ...
Stefano Bagnulo, Zuri Gray, Mikael Granvik, Alberto Cellino, Ludmilla Kolokolova, Karri Muinonen, Olga Muñoz, Cyrielle Opitom, Antti Penttilä, Colin Snodgrass   +9 more
doaj   +1 more source

Magnetic Fields in Solar Plage Regions: Insights from High-sensitivity Spectropolarimetry

The Astrophysical Journal Letters, 2023
Plage regions are patches of concentrated magnetic field in the Sun’s atmosphere where hot coronal loops are rooted. While previous studies have shed light on the properties of plage magnetic fields in the photosphere, there are still challenges in ...
J. M. da Silva Santos, K. Reardon, G. Cauzzi, T. Schad, V. Martínez Pillet, A. Tritschler, F. Wöger, R. Hofmann, J. Stauffer, H. Uitenbroek   +9 more
doaj   +1 more source

Intermediate-Mass Mergers: A New Scenario for Several FS CMa Stars

Galaxies
We summarise the properties and nature of a peculiar group of B-type stars called FS CMa stars. These stars show the B[e] phenomenon, i.e., their spectra exhibit both forbidden emission lines and infrared excess.
Daniela Korčáková, Nela Dvořáková, Iris Bermejo Lozano, Gregg A. Wade, Alicia Moranchel Basurto, Pavel Kroupa, Raul Ortega Chametla, Colin Peter Folsom, Ondrej Juhás   +8 more
doaj   +1 more source

Nonlocal metasurfaces: universal modal maps governed by a nonlocal generalized Snell's law

Nanophotonics, Volume 14, Issue 23, Page 3851-3860, 02 November 2025.
Abstract In this opinion, we describe the potential of an emerging class of flat optics known as “nonlocal metasurfaces” to manipulate light in both real space and momentum space. While the ultimate form of a conventional “local” metasurface can be viewed as a universal generator of any desired waveform from a fixed input wavefront, the ultimate form ...
Adam Overvig, Francesco Monticone
wiley   +1 more source

Rapid Deep Vat Printing Using Photoclickable Collagen‐Based Bioresins

Advanced Healthcare Materials, Volume 14, Issue 28, November 3, 2025.
Collagen‐based resin formulations based on thiol‐ene photoclick chemistry are demonstrated. These resins enable easy handleability under neutral conditions and further allow facile fabrication of multicellular tissue constructs via tomographic or FLight printing.
Michael Winkelbauer, Amelia Hasenauer, Dominic Rütsche, Hao Liu, Jakub Janiak, Michael Nguyen, Karen L. Christman, Marcy Zenobi‐Wong, Parth Chansoria   +8 more
wiley   +1 more source