Results 71 to 80 of about 338,003 (249)

Classifying and avoiding singularities in the alternative gravity dark energy models

, 2009
The future finite-time singularities emerging in alternative gravity dark energy models are classified and studied in Jordan and Einstein frames. It is shown that such singularity may occur even in flat spacetime for the specific choice of the effective ...
Capozziello, S., De Laurentis, M., Nojiri, S., Odintsov, S. D.   +3 more
core   +1 more source

Freeform Manufacturing of Plant‐Based Structural Colors for Scalable Photonic and Mechanochromic Devices

Advanced Materials, EarlyView.
A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song, Peiqi Niu, Wenxi Gu, Chun Lam Clement Chan, Jiuhong Yi, Xu Liu, Peng Tan, Chon In Haydn Cheong, Qingwen Guan, Dan Fang, Bingpu Zhou, Zi Liang Wu, Ji Liu, Yan Yan Shery Huang, Iek Man Lei   +14 more
wiley   +1 more source

Effect of scalar potential and Karmarkar condition on charged traversable wormholes

Physics Letters B
This paper investigates charged traversable wormhole solutions in f(R, ϕ) modified gravity, where R denotes the Ricci scalar and ϕ represents a scalar field.
Adnan Malik, Zoya Asghar, M. Zeeshan Gul, Wenbin Lin, Fatemah Mofarreh   +4 more
doaj   +1 more source

Evolution of Dark Energy Perturbations for Slotheon Field and Power Spectrum

, 2019
Within the framework of modified gravity model namely Slotheon model, inspired by the theory of extra dimensions, we explore the behaviour of Dark Energy and the perturbations thereof.
Adak, Debabrata, Majumdar, Debasish, Mukhopadhyay, Upala   +2 more
core   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Cosmological implications of f(R,Σ,T) gravity: A unified approach using OHD and SN ia data

Physics Letters B
This paper investigates the cosmological implications of the modified gravity framework known as f(R,Σ,T) gravity, focusing on its potential to unify and extend current cosmological models.
N. Myrzakulov, S.H. Shekh, Anirudh Pradhan   +2 more
doaj   +1 more source

A Nano‐Interception Strategy for Chronic Heart Failure: Prussian Blue Nanoparticles Disrupt Fibroblast‐Immune Communication via CCL2 Sequestration

Advanced Materials, EarlyView.
A nano‐interception strategy disrupts pathogenic fibroblast–macrophage crosstalk in chronic heart failure. Scalable Prussian blue nanoparticles selectively sequester CCL2 via ultrahigh‐affinity binding, preventing CCR2+ macrophage recruitment and breaking a key fibro‐inflammatory circuit. This approach demonstrates robust efficacy in murine and porcine
Bo Chen, Gao Wei, Guowei Zeng, Haoyu Li, Rongrong Wu, Hongyu Yan, Zijie Zhou, Kai Luo, Xiaoyang Zhang, Cong Li, Longming Huang, Lingyan Cheng, Xinjie Zhang, Jinghao Zheng, Bozhong Shi, Xiaojun Cai, Xiaomin He   +16 more
wiley   +1 more source

Energy conditions in Gauss–Bonnet gravity

European Physical Journal C: Particles and Fields
We study the Energy Conditions in modified $$f(\mathcal {G})$$ f ( G ) gravity, with $$\mathcal {G}$$ G being the topological Gauss–Bonnet term. Then we use the cosmographic parameters to constrain the functional form of the gravitational action and ...
Francesco Bajardi
doaj   +1 more source

KiDS-Legacy: Constraints on Horndeski gravity from weak lensing combined with galaxy clustering and cosmic microwave background anisotropies

Astronomy & Astrophysics
We present constraints on modified gravity from a cosmic shear analysis of the final data release of the Kilo-Degree Survey (KiDS-Legacy) in combination with DESI measurements of baryon acoustic oscillations, eBOSS observations of redshift space ...
Stölzner Benjamin, Reischke Robert, Grasso Matteo, Cataneo Matteo, Joachimi Benjamin, Loureiro Arthur, Spurio Mancini Alessio, Wright Angus H., Asgari Marika, Bilicki Maciej, Dvornik Andrej, Georgiou Christos, Giblin Benjamin, Heymans Catherine, Hildebrandt Hendrik, Joudaki Shahab, Kuijken Konrad, Li Shun-Sheng, Linke Laila, Mahony Constance, Moscardini Lauro, Porth Lucas, Radovich Mario, Tröster Tilman, von Wietersheim-Kramsta Maximilian, Yan Ziang, Yoon Mijin, Zhang Yun-Hao   +27 more
doaj   +1 more source

Stellar structures in f(G) gravity admitting Noether symmetries

Physics Letters B, 2020
This work aims to investigate some possible emergence of relativistic compact stellar objects in modified f(G) gravity using Noether symmetry approach. For this purpose, we assume static spherically symmetric spacetime in the presence of isotropic matter
M. Farasat Shamir, Tayyaba Naz
doaj   +1 more source