Results 81 to 90 of about 2,165 (257)

Pulse analysis by delayed absorption from a coherently excited atom

APL Photonics, 2019
In this tutorial, we provide a short review of attosecond pulse characterization techniques and a pedagogical account of a recently proposed method called Pulse Analysis by Delayed Absorption (PANDA) [S. Pabst and J. M. Dahlström, Phys. Rev. A 94, 013411
Jan Marcus Dahlström, Stefan Pabst, Eva Lindroth   +2 more
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
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

Mass spectrum of the hidden-charm pentaquarks in the compact diquark model

Journal of High Energy Physics, 2019
The LHCb collaboration have recently updated their analysis of the resonant J/ 𝜓 p mass spectrum in the decay Λ b 0 $$ {\varLambda}_b^0 $$ → J/𝜓 p K − , making use of their combined Run 1 and Run 2 data. In the updated analysis, three narrow states, P c (
Ahmed Ali, Ishtiaq Ahmed, M. Jamil Aslam, Alexander Ya. Parkhomenko, Abdur Rehman   +4 more
doaj   +1 more source

Magnetic‐Field Control of Surface States in CoFe2O4 Thin Films for Nitrate Electroreduction to Ammonia

Advanced Functional Materials, EarlyView.
Magnetic‐field‐assisted CVD of heterometallic single‐source precursors modulates thin‐film surface electronic structure and interfacial charge transfer. Field‐grown (Cobalt ferrite‐1T)CF‐1T films exhibit stabilized electronic states, lower kinetic barriers, and markedly enhanced nitrate‐to‐ammonia electrocatalysis versus (Cobalt ferrite‐0T) CF‐0T ...
Touraj Karimpour, Younes Mousazade, Simon Diel, Shilendra Kumar Sharma, Tisita Das, Nathália C. Verissimo, Thomas Fischer, Ziyaad Aytuna, Andreas Lichtenberg, Sudip Chakraborty, Marcel Risch, Sanjay Mathur   +11 more
wiley   +1 more source

Dynamical Environment and Stability around Centaur (2060) Chiron

The Astrophysical Journal
A recent stellar occultation revealed that the Centaur (2060) Chiron hosts a broad disk extending beyond ∼200 km from its center, embedding three ring-like structures (Chi1R, Chi2R, and Chi3R), while a tenuous outer ring (Chi4R) lies beyond the Roche ...
G. Madeira, B. E. Morgado, C. L. Pereira, G. Ramon, R. Sfair, F. Braga-Ribas   +5 more
doaj   +1 more source

Unified Analytical Framework for Understanding the Operational Stability of Blue Phosphorescent OLEDs: Quantitative Insights Into Exciton Recycling and Bimolecular Interactions

Advanced Functional Materials, EarlyView.
Blue phosphorescent OLEDs remain limited by poor operational stability. Here, a unified analytical framework integrating transient photoluminescence and magneto‐electroluminescence is developed to correlate intrinsic material photophysics with electrically driven degradation.
Hakjun Lee, Bum June Park, Taekyung Kim
wiley   +1 more source

A potential exomoon from the predicted planet obliquity of $\beta$ Pictoris b

The Open Journal of Astrophysics
Planet obliquity is the alignment or misalignment of a planet spin axis relative to its orbit normal. In a multiplanet system, this obliquity is a valuable signature of planet formation and evolutionary history.
Michael Poon, Hanno Rein, Dang Pham
doaj   +1 more source

Exceptional behavior of d-like surface resonances on W(110): the one-step model in its density matrix formulation

New Journal of Physics, 2014
Spin–orbit-induced spin splitting of surface states has attracted great interest in recent years because of the high potential for technological applications associated with this phenomenon.
J Braun, K Miyamoto, A Kimura, T Okuda, M Donath, H Ebert, J Minár   +6 more
doaj   +1 more source

Low-order resonances in weakly dissipative spin–orbit models

Journal of Differential Equations, 2009
The paper is concerned with periodic orbits in nonlinear second-order differential equations with small damping, and periodic excitation. The spin-orbit model of celestial mechanics is an example of such an equation. The authors establish existence, stability and basins of attraction of periodic orbits of type \((p, q)\) for two given coprime positive ...
BIASCO, LUCA, CHIERCHIA, Luigi
openaire   +3 more sources

MXene Wrapped Magnetic Mesocrystals for Durable Redox Catalytic Cancer Therapy and Responsive MRI

Advanced Functional Materials, EarlyView.
Conformal wrapping of ultrathin Ti3C2Tx MXene nanosheets on Fe3O4 mesocrystals creates topology‐stabilized Schottky junctions that direct photoinduced electron transfer under NIR irradiation. The unique architecture sustains Fenton catalysis, promotes continuous hydroxyl radical production, and provides photo‐responsive MRI contrast.
Min Jun Ko, Seongchan Kim, Jun‐Hyeok Han, Sanghee Lee, Minji Ahn, Hong En Fu, Young Jun Jang, Yoo Sang Jeon, Weiguo Li, Young Keun Kim, Dong‐Hyun Kim   +10 more
wiley   +1 more source