Results 231 to 240 of about 8,590,019 (336)

The longitudinal dynamics evolution of optical skyrmions via meta-optics. [PDF]

Nanophotonics
He T, Liu C, Tang W, Li D, Yan P, Liu Q, Xiao Q.   +6 more
europepmc   +1 more source

Compact Manifolds With Unbounded Nilpotent Fundamental Groups and Positive Ricci Curvature

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT It follows from the work of Kapovitch and Wilking that a closed manifold with nonnegative Ricci curvature has a uniformly almost nilpotent fundamental group. Leftover questions and conjectures, have asked if in this context the fundamental group is actually uniformly almost abelian. The main goal of this work is to construct examples (Mk9,gk)$(
Elia Bruè, Aaron Naber, Daniele Semola
wiley   +1 more source

High-speed, wide-field, fiber-based PS-OCT system with real-time surface Stokes feedback for circular input polarization. [PDF]

Biomed Opt Express
Shi Y, Xu J, Gong Z, Zhao Q, Zhang Y, Wang RK.   +5 more
europepmc   +1 more source

Sustainability Assessment of Micro, Small, and Medium Enterprises: A Systematic Review and Hybrid Architecture for Credible, Salient, and Legitimate Knowledge Governance

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Sustainability assessment advances corporate social responsibility toward inclusive development. Widely recognized approaches prove inadequate for micro, small, and medium enterprises (MSMEs), resulting in fragmented proliferation that hinders cumulative knowledge.
Luísa Couto Gonçalves de Souza, Laura Proença Guimarães, Maria Auxiliadora Drumond   +2 more
wiley   +1 more source

Longitudinally engineered metasurfaces for 3D vectorial holography. [PDF]

Light Sci Appl
Tan L, Huo P, Lin P, Ren Y, Qi H, Fang L, Wang Y, Ou J, Lu Y, Xu T.   +9 more
europepmc   +1 more source

Plasmakristall‐4 Experiment: 10 Years of Operation in Orbit

Contributions to Plasma Physics, EarlyView.
ABSTRACT Plasmakristall‐4 (PK‐4) is a microgravity complex plasma laboratory operated for 10 years on board the International Space Station. Its main purpose is the particle‐resolved investigation of generic condensed matter phenomena using strongly coupled suspensions of microparticles immersed in low‐pressure gas‐discharge plasmas.
M. Pustylnik, H. M. Thomas, M. Kretschmer, M. Thoma   +3 more
wiley   +1 more source

Bright single-photon skyrmion sources in bullseye cavities. [PDF]

Nanophotonics
Ma J, Liu S, Lu C, Yu Y, Chen B, Liu J.
europepmc   +1 more source

Photothermal bubble: Dynamics, manipulation, and applications

Droplet, EarlyView.
As a versatile platform for bubble manipulation, photothermal techniques empower diverse operations: planar translation by scanning the laser spot, sustained periodic bouncing from competing thermal and hydrodynamic flows, and even guided 3D trajectories achieved by tailoring the heating configuration.
Man Hu, Feng Wang, Daosheng Deng
wiley   +1 more source

Differential photoacoustic-stimulated Raman spectroscopy (DPA-SRS) for high-sensitivity hydrogen detection. [PDF]

Photoacoustics
Yu X, Li Z, Liu J, Xu H, Miao J, Wang C, Fang Y, Pan Y, Fang Y.   +8 more
europepmc   +1 more source

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

Deep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu, Hanyi Wang, Quan Gan, Shuang Zheng   +3 more
wiley   +1 more source