Results 61 to 70 of about 6,376,337 (186)

Near Resonant Raman Optical Activity Study of the Complex Cation Tris(ethylenediamine)cobalt(III) in Water: Experiment and DFT Calculation

Chirality, Volume 38, Issue 9, September 2026.
Corrected ROA spectrum of the ECD‐Raman (red curve) from the observed raw signal (black curve) reveals the intrinsic ROA signal of Δ‐[Co(en)3]3+, enabling an excellent theory‐experiment agreement. ABSTRACT Chiral metal complexes are important in catalysis and medicinal chemistry, where understanding their structural and optical properties is crucial ...
Maria Sara Raju, Nazanin Kordestani, Elen Duverger‐Nédellec, Yann Danten, Patrick Rosa, Elizabeth A. Hillard, Nicolas Daugey   +6 more
wiley   +1 more source

Characterization of x-ray detectors in the MIT x-ray polarimetry beamline

X-Ray, Optical, and Infrared Detectors for Astronomy XI
The MIT X-ray Polarimetry Beamline is a facility that we developed for testing components for possible use in X-ray polarimetry. Over the past few years, we have demonstrated that the X-ray source can generate nearly 100% polarized X-rays at various energies from 183 eV (Boron K$α$) to 705 eV (Fe L$α$) using a laterally graded multilayer coated mirror (
Heine, Sarah N. T., Marshall, Herman L., Schneider, Benjamin, Lamar, Beverly, Kothnur, Nithya, Garner, Alan   +5 more
openaire   +2 more sources

Revealing the Hidden Stress Field and Its Thermal Input Dependence in Femtosecond Laser–Processed Silicon Photonic Chip Substrates via Weak Measurement [PDF]

Nanophotonics
A novel noncontact method based on weak value amplification enables high‐sensitivity stress mapping of femtosecond laser processed silicon photonic chip substrates. It converts microscale stress into the birefringent phase via the photoelastic effect and reads it out with weak measurement, achieving a 0.37‐kPa detection limit.
Sun W, Qiu B, Li J, Xiao H, Yu Y, Zhang Q.   +5 more
europepmc   +2 more sources

Near‐Infrared Polarimetric Imaging With Nonlinear Flat‐Optics

Laser &Photonics Reviews, Volume 20, Issue 18, 18 September 2026.
ABSTRACT A compact and broadband polarimetric imaging platform is presented, based on second‐harmonic generation (SHG) in nonlinear flat‐optics. The system employs periodic all‐dielectric AlGaAs gratings to induce polarization‐dependent SH emission, enabling pixel by pixel direct retrieval of the full Stokes vector from an input intensity distribution ...
Evgenii Menshikov, Marco A. López Sánchez, Paolo Franceschini, Andrea Tognazzi, Domenico de Ceglia, Kristina Frizyuk, Costantino De Angelis   +6 more
wiley   +1 more source

On the Making of IXPE

Galaxies
Drs. Weisskopf and Ramsey were the original Principal and Deputy Principal Investigators of the Imaging X-ray Polarimetry Explorer (IXPE). They outline the path to the development of IXPE and discuss the technical and programmatic history that led up to ...
Martin C. Weisskopf, Brian Ramsey
doaj   +1 more source

Hard X-ray and Soft Gamma Ray Polarimetry with CdTe/CZT Spectro-Imager

Galaxies, 2018
CdTe/CZT based spectroscopic two-dimensional (2D)/three-dimensional (3D) imagers when operated in the Compton regime can work as high performance scattering polarimeters, for high-energy astrophysics.
Ezio Caroli, Miguel Moita, Rui M. Curado da Silva, Stefano Del Sordo, Giovanni de Cesare, Jorge M. Maia, Marcela Pàscoa   +6 more
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, Volume 36, Issue 67, 20 August 2026.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory

Astronomische Nachrichten, Volume 347, Issue 7, August 2026.
ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth, Paško Roje, Stella Vješnica, Stefan Cikota, Alex J. Brown, Mike Kretlow, Marco Azzaro, Santiago Reinhart, Jesús Aceituno, Harry Dawson, Carsten Denker, Torsten Enßlin, Stephan Geier, Thomas Granzer, Thomas Kupfer, Gianluca Li Causi, Samaya Nissanke, José Luis Ortiz, Fernando Pedichini, Katja Poppenhäger, Axel Schwope   +20 more
wiley   +1 more source

XL-Calibur Polarimetry of Cyg X-1 Further Constrains the Origin of Its Hard-state X-Ray Emission

The Astrophysical Journal
The balloon-borne hard X-ray polarimetry mission XL-Calibur observed the black hole X-ray binary (BHXRB) Cygnus X-1 (Cyg X-1) during its nearly 6 day long-duration balloon flight from Sweden to Canada in 2024 July.
Hisamitsu Awaki, Matthew G. Baring, Richard Bose, Jacob Casey, Sohee Chun, Adrika Dasgupta, Pavel Galchenko, Ephraim Gau, Kazuho Goya, Tomohiro Hakamata, Takayuki Hayashi, Scott Heatwole, Kun Hu, Daiki Ishi, Manabu Ishida, Fabian Kislat, Mózsi Kiss, Kassi Klepper, Henric Krawczynski, Haruki Kuramoto, Lindsey Lisalda, Yoshitomo Maeda, Hironori Matsumoto, Shravan Vengalil Menon, Aiko Miyamoto, Asca Miyamoto, Kaito Murakami, Takashi Okajima, Mark Pearce, Brian Rauch, Nicole Rodriguez Cavero, Kentaro Shirahama, Sean Spooner, Hiromitsu Takahashi, Keisuke Tamura, Yuusuke Uchida, Kasun Wimalasena, Masato Yokota, Marina Yoshimoto   +38 more
doaj   +1 more source

X-Ray Polarization Study of Pulsar Wind Nebulae with eXTP: Simulation Results and Scientific Prospects

The Astrophysical Journal
X-ray polarization observations of pulsar wind nebulae (PWNe) provide crucial insights into magnetic field structures and particle acceleration mechanisms.
Kuan Liu, Fei Xie, Ming-Yu Ge, Wei Deng, En-Wei Liang   +4 more
doaj   +1 more source