Results 151 to 160 of about 42,000 (191)

Ultrashort electron pulse generation with single-femtosecond-level jitter. [PDF]

Sci Adv
Zheng J, Su D, He X, Kärtner FX, Zhang D.   +4 more
europepmc   +1 more source

In Situ Raman Spectroscopy of a Silica Gel‐Templated Hydration Pathway in CO2‐Activated Cement

Journal of the American Ceramic Society, Volume 109, Issue 5, May 2026.
ABSTRACT This study investigates early‐age carbonate mineralization in cementitious systems using in situ Raman microspectroscopy. In the presence of dissolved CO2, clinker phases undergo accelerated dissolution, decomposing to form various calcium carbonate polymorphs and a transient amorphous silica gel network.
Marcin Hajduczek, Yogiraj Sargam, Sean Monkman, Vishnu Chaudhari, Santiago El Awad, Franz‐Josef Ulm, Admir Masic   +6 more
wiley   +1 more source

Quantum-inspired adaptive simulated annealing for antenna selection and joint optimization in RIS-assisted MIMO-NOMA systems. [PDF]

Sci Rep
Farghaly SI, Dawood HS, Fouda HS.
europepmc   +1 more source

Transient Absorption Spectroscopy of Blue Copper Sites in Divergent Protein Folds: Azurin Versus Multicopper Oxidase

ChemPhysChem, Volume 27, Issue 8, 28 April 2026.
Ultrafast pump‐probe spectroscopy of two evolutionarily divergent blue copper proteins reveals distinct low‐frequency ground‐state collective modes (38 cm−1 in SLAC, 29 cm−1 in azurin) generated via impulsive stimulated Raman scattering, potentially reflecting the differences in the rigidity of the surrounding protein scaffold beyond a conserved Cu ...
Luis Ignacio Domenianni, Patrycja Kielb
wiley   +1 more source

Longitudinal field controls vector vortex beams in anisotropic epsilon-near-zero metamaterials. [PDF]

Nat Commun
Aita V, Roth DJ, Zaleska A, Krasavin AV, Nicholls LH, Shevchenko M, Rodríguez-Fortuño FJ, Zayats AV.   +7 more
europepmc   +1 more source

Atmospheric Adjustments to In Situ Cirrus Formation in Ice Supersaturated Regions

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract High‐level ice clouds exert a net warming on the climate system because their greenhouse effect outweighs their albedo effect. Focusing on in‐situ cirrus, their formation involves the conversion of upper‐tropospheric water vapor into ice crystals.
Jérémie Juvin‐Quarroz, Audran Borella, Patryk Kiepas, Thomas Dubos, Olivier Boucher, Nicolas Bellouin   +5 more
wiley   +1 more source

Quantum sensing and metrology with free electrons. [PDF]

Nat Commun
Velasco CI, García de Abajo FJ.
europepmc   +1 more source

Ultrafast phonon-mediated dephasing of color centers in hexagonal boron nitride probed by electron beams. [PDF]

Nat Commun
Taleb M, Bittorf PH, Black M, Hentschel M, Sigle W, Haas B, Koch C, van Aken PA, Giessen H, Talebi N.   +9 more
europepmc   +1 more source

Butler-Matrix Beamspace Front-Ends for Massive MIMO: Architecture, Loss Budget, and Capacity Impact. [PDF]

Sensors (Basel)
Vico F, Monserrat JF, Ge Y.
europepmc   +1 more source

Inverse-Designed On-Chip Orbital Angular Momentum Mode Converter for Optical Convolution Acceleration. [PDF]

Nanophotonics
Chen Y, Zhang K, Liao K, Hu X, Gong Q.
europepmc   +1 more source