Results 141 to 150 of about 46,248 (301)
Advanced Science, EarlyView.Here, a dual‐template strategy (ice and bubble template) is used to prepare fire‐safe aerogels with hierarchical structures. When the foam expansion ratio exceeds the jamming transition value in the foam system, the aerogels demonstrate superelasticity and extreme shape adaptability.
Xiaoyang Yu +5 more
wiley +1 more source
Advanced Science, EarlyView.Rosette‐like high‐entropy NiCoFeMnAlOx enable the electrochemical degradation of PGA plastic waste in seawater, coupling glycolic acid oxidation with hydrogen evolution. Abundant OH* species lower energy barriers for C─C and C─H bond activation, while in situ and theoretical studies reveal the catalytic mechanism.
Zhenhao Xu +6 more
wiley +1 more source
Generating Functionals for Spin Foam Amplitudes [PDF]
, 2014 We construct a generating functional for the exact evalutation of a coherent representation of spin network amplitudes. This generating functional is defined for arbitrary graphs and depends only on a pair of spinors for each edge.
Hnybida, Jeff
core +2 more sources
Advanced Science, EarlyView.A flexible piezoresistive pressure sensor with dual‐graded microstructures achieves both high sensitivity (69.8 kPa⁻¹) and a broad linear range up to 300 kPa (R2 = 0.997). Synergizing structural deformation and tunneling conduction, it enables rapid, stable, and accurate detection of subtle physiological signals, offering a scalable and cost‐effective ...
Ningning Bai +11 more
wiley +1 more source
Generalized lattice gauge theory, spin foams and state sum invariants [PDF]
, 2003 Robert Oeckl
openalex +1 more source
Advanced Science, EarlyView.An uncalcined, hydroxyl‐rich MgAl layered double hydroxide, synthesized via low‐energy aqueous miscible organic solvent treatment, enables mesopore‐engineered polyethyleneimine anchoring for direct air capture (DAC). The exfoliated structure exposes abundant hydroxyls that stabilize amines via hydrogen bonding, effectively suppressing oxidative ...
Meng Zhao +6 more
wiley +1 more source
, 2005 We propose a spin foam model of four-dimensional quantum gravity which is based on the integration of the tetrads in the path integral for the Palatini action of General Relativity. In the Euclidian gravity case we show that the model can be understood as a modification of the Barrett-Crane spin foam model.
openaire +2 more sources
Biodegradable Medical Implants: Reshaping Future Medical Practice
Advanced Science, EarlyView.Biodegradable medical implants are transforming future healthcare by providing sustainable, biocompatible solutions that eliminate secondary removal procedures, enhancing patients’ physical and psychological comfort, and reducing economic burdens.
Bo Xia +4 more
wiley +1 more source
Synthesis of Elastic Metallic Nickel by Solvent‐Ligand‐Mediated Reductive Assembly
Advanced Science, EarlyView.The novel elastic metallic nickel, featuring ligands coordinating on the metal surface, is synthesized via rational selection of reduction and structure‐directing organic solvents. Moreover, by modulating solvent composition and incorporating acetic acid ligands, sufficient ligands are enabled to coordinate with the metal surface, thereby improving the
Haiyan An +5 more
wiley +1 more source