Results 251 to 260 of about 17,173,630 (326)

Combs, Fast and Slow: Non‐Adiabatic Mean‐Field Theory of Active Cavities

Laser &Photonics Reviews, EarlyView.
A unified mean‐field theory is developed that describes active cavities with dynamics of any speed, whether they be fast, slow, or anything in between. By creating an operator‐based framework that makes no adiabatic approximation, this approach delivers more efficient simulations and new analytical insights for a wide range of integrated combs, such as
David Burghoff
wiley   +1 more source

Estimation of mass and radii for charged compact objects using a modified Chaplygin equation of state in the Buchdahl-I metric. [PDF]

PLoS One
Zahra A, Mardan SA, Saleem S, Bilal Riaz M, Kozubek T.   +4 more
europepmc   +1 more source

Integrated Flat‐Top Beam Shaper Using Subwavelength Engineered Critical Guiding

Laser &Photonics Reviews, EarlyView.
An integrated flat‐top beam shaper is demonstrated. Subwavelength gratings are utilized to realize the critical guiding of light. The monolithic integrated design provides a scalable solution for high uniformity on‐chip flat‐top beam generation, potential for high‐performance imaging and metrology photonic system.
Liang Zhang, Hongnan Xu, Gaolei Hu, Hon Ki Tsang   +3 more
wiley   +1 more source

Theoretical investigation of the A¹Π-X¹Σ⁺, B¹Σ⁺-X¹Σ⁺, C¹Σ⁺-X¹Σ⁺, and E¹Π-X¹Σ⁺ transitions of the CO molecule.

Phys Chem Chem Phys
Khalil M, Mahmoud S, Brady RP, Almehairbi M, Gacesa M, Yurchenko SN, Tennyson J, Al Ghaferi A, El-Kork N.   +8 more
europepmc   +1 more source

New method for transient cold wall heat flux measurements for unlimited exposure times. [PDF]

Sci Rep
Hufgard F, Duernhofer C, Mueller C, Loehle S.   +3 more
europepmc   +1 more source

The Decisive Role of Confinement in Enhancing or Suppressing Self‐Nucleation in Polyethylene‐Containing Block Copolymers

Macromolecular Chemistry and Physics, EarlyView.
The self‐nucleation behavior of crystallizable blocks confined in block copolymer microdomains strongly depends on the degree of confinement. With increasing confinement (from AB to ABA to ABC‐type block copolymers), melt memory and self‐nucleation disappear, i.e., the self‐nucleation Domain (Domain II) is not visible in self‐nucleation studies by ...
Yilong Liao, Leire Sangroniz, Maryam Safari, Holger Schmalz, Alejandro J. Müller   +4 more
wiley   +1 more source

Shear Instability and Localization in High-Speed Cold Spray Processes: Impact on Particle Fragmentation and Bonding Mechanisms. [PDF]

Materials (Basel)
Msolli S.
europepmc   +1 more source

Global and microlocal aspects of Dirac operators: Propagators and Hadamard states

Mathematische Nachrichten, EarlyView.
Abstract We propose a geometric approach to construct the Cauchy evolution operator for the Lorentzian Dirac operator on Cauchy‐compact globally hyperbolic 4‐manifolds. We realize the Cauchy evolution operator as the sum of two invariantly defined oscillatory integrals—the positive and negative Dirac propagators—global in space and in time, with ...
Matteo Capoferri, Simone Murro
wiley   +1 more source

Infidelity Analysis of Digital Counter-Diabatic Driving in Simple Two-Qubit System. [PDF]

Entropy (Basel)
Lei O.
europepmc   +1 more source

Photoreactivity of Norrish Type Photoinitiators for 3D Laser Printing via First Principles Calculations

Macromolecular Rapid Communications, EarlyView.
Quantum mechanical calculations demonstrate that Norrish Type I photoinitiators generate radicals in 3D laser printing through two‐photon absorption and bond cleavage in the lowest triplet state. In contrast, Type II photoinitiators initiate polymerization via processes involving higher triplet states and a unique third‐order mechanism.
Anna Mauri, Pascal Kiefer, Wolfgang Wenzel, Mariana Kozlowska   +3 more
wiley   +1 more source