Results 31 to 40 of about 891 (131)

Compact Spectral Imaging: A Review of Miniaturized and Integrated Systems

Laser &Photonics Reviews, Volume 19, Issue 21, November 6, 2025.
This review explores the rapid shift toward compact spectral imaging systems by examining four key design paradigms: Do‐It‐Yourself (DIY) platforms, freeform optics, filter‐on‐chip integration, and multifunctional metasurfaces. The discussion highlights critical applications in medicine, agriculture, and environmental monitoring, providing comparative ...
Sani Mukhtar, Amir Arbabi, Jaime Viegas
wiley   +1 more source

Spectropolarimetry of five changing-look active galactic nuclei

Astronomy & Astrophysics
Context. A growing number of active galactic nuclei (AGNs) show dramatic changes in their spectral classification. The mechanisms behind the appearance and disappearance of the optical broad emission lines, as well as the brightening or fading of AGNs ...
Marin F., Hutsemékers D., Biedermann J.
doaj   +1 more source

Chirality in Transition Metal Dichalcogenide Nanostructures

Chemistry – A European Journal, Volume 31, Issue 35, June 23, 2025.
The emergence of chirality in inorganic nanostructures has a critical impact on the properties and potential applications of these novel nanomaterials. This work presents a critical collection of examples of the observation of chirality in TMDs, covering different synthetic procedures and origins of chirality as well as a broad range of dimensionality ...
Lorenzo Branzi, Joseph Martyn, Lucy Fitzsimmons, Yurii K. Gun'ko   +3 more
wiley   +1 more source

Covalently Mercurated 6‐Phenylcarbazole Residues Promote Hybridization of Triplex‐Forming Oligonucleotides

ChemBioChem, Volume 26, Issue 8, April 14, 2025.
Organomercury derivatives of 6‐phenylcarbazole can stabilize triple helices when placed at the termini of triplex‐forming homothymine oligonucleotides. In some cases, this stabilization could be attributed to direct coordination of a Hg(II) ion to adenine‐N7 or cytosine‐N4.
Dattatraya Uttam Ukale, Tuomas Lönnberg
wiley   +1 more source

The Myotubularin Related Proteins and the Untapped Interaction Potential of Their Disordered C‐Terminal Regions

Proteins: Structure, Function, and Bioinformatics, Volume 93, Issue 4, Page 831-854, April 2025.
ABSTRACT Intrinsically disordered regions (IDRs) of proteins remain understudied with enigmatic sequence features relevant to their functions. Members of the myotubularin‐related protein (MTMR) family contain uncharacterized IDRs. After decades of research on their phosphatase activity, recent work on the C‐terminal IDRs of MTMR7 revealed new ...
Daniel Saar, Caroline L. E. Lennartsson, Philip Weidner, Elke Burgermeister, Birthe B. Kragelund   +4 more
wiley   +1 more source

First X-Ray and Radio Polarimetry of the Neutron Star Low-mass X-Ray Binary GX 17+2

The Astrophysical Journal
We report the first polarimetric results of the neutron star low-mass X-ray binary Z-source GX 17+2 using the Imaging X-ray Polarimetry Explorer (IXPE) and the Very Large Array (VLA).
Unnati Kashyap, Thomas J. Maccarone, Eliot C. Pattie, Mason Ng, Swati Ravi, Alexandra J. Tetarenko, Pau Bosch-Cabot, Herman L. Marshall   +7 more
doaj   +1 more source

Image Instabilities and Polarization Crosstalk

The Astrophysical Journal
We expand on our previous study of the impact of atmospheric seeing on polarization crosstalk, and show how the formalism that was developed in that work can be applied to treat the case of spatial modulators of polarization.
R. Casini, A. G. de Wijn
doaj   +1 more source

An Iterative OLA Method for Inversion of Solar Spectropolarimetric Data. I. Single- and Multiple-variable Inversions of Thermodynamic Quantities

The Astrophysical Journal, 2023
This paper describes an adaptation of the Optimally Localized Averaging (OLA) inversion technique, originally developed for geo- and helioseismological applications, to the interpretation of solar spectroscopic data.
Piyush Agrawal, Mark P. Rast, Basilio Ruiz Cobo   +2 more
doaj   +1 more source

Solar disk integration polarimeter: An automated disk‐integration full‐Stokes‐vector solar feed for the Potsdam Echelle Polarimetric and Spectroscopic Instrument spectrograph

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We introduce a new solar feed for the PEPSI nighttime spectrograph of the LBT. It enables spectroscopy of the Sun‐as‐a‐star in circular polarization (CP) and linear polarization (LP) with a spectral resolution of 250,000 (≈0.025Å or 600ms−1$$ 600\kern0.1em \mathrm{m}\kern0.1em {\mathrm{s}}^{-1} $$) for the wavelength range 383–907 nm.
Klaus G. Strassmeier, Ilya Ilyin, Manfred Woche, Frank Dionies, Michael Weber, Arto Järvinen, Carsten Denker, Ekaterina Dineva, Meetu Verma, Thomas Granzer, Wilbert Bittner, Svend‐Marian Bauer, Jens Paschke, Hakan Önel   +13 more
wiley   +1 more source

Atomic Scale Structure of Self‐Assembled Lipidated Peptide Nanomaterials

Advanced Materials, Volume 36, Issue 24, June 13, 2024.
A bottom‐up theoretical approach is reported to produce the first atomically resolved experimentally consistent model of lipidated β‐peptide nanomaterials. The β‐peptide materials possess long‐term mechanical and chemical stability in vivo, and may be easily decorated with combinations of different biological cues. This unique combination of properties
Billy J. Williams‐Noonan, Ketav Kulkarni, Nevena Todorova, Matteo Franceschi, Christopher Wilde, Mark P. Del Borgo, Louise C. Serpell, Marie‐Isabel Aguilar, Irene Yarovsky   +8 more
wiley   +1 more source