Moiré metasurface for dynamically tuned vector beams.

The vector beam (VB), characterized by the spatially non-uniform distribution of polarization states, shows broad prospects in the photonics field. Recently, the development of metasurfaces offers novel (to the best of our knowledge) opportunities for manipulating VB, yet most efforts lack dynamic control over its polarization order. In this Letter, a general and facile method for dynamically tuning the polarization order of VB is proposed and validated by a silicon-based Moiré metasurface in the visible band.

Investigation on the pro-aroma generation effects of fatty acids in beef via thermal oxidative models.

Fatty acids (FAs) in lipids are important precursors for the formation of meat aroma compounds. However, the specific roles of individual FAs and related reactions in beef aroma formation remain unclear. This study established thermal oxidation models to investigate the impact of different FAs on the formation of beef aroma compounds.

Personality perspective on depression and anxiety symptoms among Chinese adolescents and young adults: a two-sample network analysis.

Background: The mental health burden among adolescents has been increasing, impacting individuals even before formal diagnosis of common mental disorders. Although personality traits, as key indicators of mental health conditions, play a crucial role in the development of mental disorders, there is a gap regarding the trait-to-symptom pathways and similarities and differences between adolescents and young adults.

Methods: A total of 860 adolescents and 1751 young adults participated in this study.

Isotope tracer study of soil erosion in a typical sub-watershed in the eastern Tianshan Mountains, China.

Soil erosion represents a critical ecological and environmental challenge on a global scale. In this study, the Baiyang River sub-watershed, located in the eastern Tianshan Mountains of Xinjiang, China, was selected as a representative area for the quantitative analysis of soil erosion. The dual isotope tracer technique, utilizing Cs and Pb, was employed to investigate the distribution patterns of these isotopes within soil profiles and to assess soil erosion dynamics under varying land-use types.

A Mechanically Robust, Extreme Environment-Stable, and Fast Ion Transport Nanofluidic Fiber.

Constructing mechanically strong and environmentally stable nanofluidic fibers with excellent ion transport remains a challenge. Herein, we design a mechanically robust and stable aramid nanofiber/carboxylated aramid nanofiber (ANF/cANF) hybrid nanofluidic fiber with a high ionic conductivity via a wet spinning-induced orientation strategy. Benefiting from the oriented structure and strong interfacial interactions of the filaments, the ANF/cANF nanofluidic fiber exhibits a high tensile strength of 276.