Exceptional point empowered near-field routing of hyperbolic polaritons
Peer-Reviewed Publication
Updates every hour. Last Updated: 1-May-2025 07:08 ET (1-May-2025 11:08 GMT/UTC)
An international team, led by Tongji University and Beijing Institute of Technology, together with University of Oviedo, demonstrates the possibility of converting linear incident polarization to any polarization state on demand and over a broadband frequency range. In particular, the appearance of chiral dipoles at the exceptional point presents a new degree of freedom for manipulating hyperbolic polaritons.
In a paper published in the National Scientific Review, researchers used 25 years of data to build machine learning models. They analyzed the spatial and temporal variation in soil microbial-derived carbon (MDC) stocks, and predicted MDC stocks under different shared socioeconomic paths in the future.This work revealed that every 1°C temperature increase leads to 6.7 Pg decline in global soil MDC in predictable regions. Projected future MDC stocks are expected to decline globally, with a drop of 6-37 Pg by 2100, depending on socioeconomic pathways. They recommend integrating the response of MDC stocks to warming into socioeconomic models to enhance confidence in selecting sustainable pathways.
In a paper published in Science Bulletin, multi-omics analyses comprising of lipidomics (439 lipids), sterolomics (22 oxysterols and sterols), metabolomics (311 polar metabolites) and proteomics (2325 proteins) were conducted on CSF samples from 50 intracerebral hemorrhage (ICH) patients (collected at four time-points from Day 1 to Day 14) and 22 control participants. This study found that circulating triacylglycerols (TAGs) are implicated in the modulation of immune cell activity and inflammation, while changes in glycosphingolipid potentially reflected demyelination and remyelination mediated by proteasomal degradation of osteopontin (SPP1) in the CSF. Our findings emphasize lipid-centric intervention targets to ameliorate metabolic insults post-ICH.
In a paper published in Polymer Science & Technology, an international team of scientists
explores how modifying side-chain features in homopolypeptides affects their ability to form coacervates. They synthesized various polypeptide variants, revealing that changing the lengths of side-chain amino or linker segments was found either to prohibit coacervate formation or to allow adjustment of the phase transition temperature. Notably, anionic polypeptides also formed coacervates, expanding potential applications in biomimetic materials. This work paves the way for designing multifunctional polymers with tunable properties. This study is led by Timothy J. Deming (Department of Chemistry and Biochemistry and Department of Bioengineering, University of California, Los Angeles, United States).
A new study highlights the rising environmental toll of artificial intelligence, spotlighting the surge in energy consumption and carbon emissions driven by escalating computing demands. The research offers a comprehensive analysis of artificial intelligence’s (AI’s) carbon footprint, underscoring the urgent need for the tech sector to adopt sustainable practices to curb its substantial environmental impact.
This study demonstrates that global or adipose tissue-specific knockout of CIDEC/FSP27 significantly reduces AAA incidence after HFD treatment and Ang Ⅱ infusion, providing novel insights into the inflammatory mechanisms of PVAT during AAA progression and highlighting the potential of CIDEC/FSP27 as a therapeutic target for obesity-related AAA.this study demonstrates that global or adipose tissue-specific knockout of CIDEC/FSP27 significantly reduces AAA incidence after HFD treatment and Ang Ⅱ infusion, providing novel insights into the inflammatory mechanisms of PVAT during AAA progression and highlighting the potential of CIDEC/FSP27 as a therapeutic target for obesity-related AAA.
This article explores how AI, like ChatGPT, challenges traditional educational models, advocating for a philosophical approach to foster adulthood-ready individuals. It critiques exam-oriented methods, highlighting the need for educators to guide students beyond youthful perceptions using insights from the History and Philosophy of Science.