Results 141 to 150 of about 45,346 (288)
Local gauge theory and coarse graining
, 2012 Within the discrete gauge theory which is the basis of spin foam models, the problem of macroscopically faithful coarse graining is studied. Macroscopic data is identified; it contains the holonomy evaluation along a discrete set of loops and the ...
José A Zapata, Kobayashi S, Oriti D
core +1 more source
Multi‐Material Additive Manufacturing of Soft Robotic Systems: A Comprehensive Review
Advanced Robotics Research, EarlyView.This review explores the transformative role of multi‐material additive manufacturing (MMAM) in the development of soft robotic systems. It presents current techniques, materials, and design strategies that enable functionally graded and adaptive structures.
Ritik Raj +2 more
wiley +1 more source
Piezoelectric Biomaterials for Bone Regeneration: Roadmap from Dipole to Osteogenesis
Advanced Science, EarlyView.Piezoelectric biomaterials convert mechanical forces into electrical signals, offering novel strategies to restore and modulate bone microenvironments for tissue engineering. This review examines molecular dipole origins, spatial arrangements, and pseudo‐piezoelectric mechanisms and highlights dipole‐engineering techniques for osteogenesis regulation ...
Xiyao Ni +7 more
wiley +1 more source
Advanced Science, EarlyView.Human skin inherently forms a body‐coupled triboelectric circuit that enables the generation of triboelectric charges through contact between the skin surface and various materials. Integrated with an on‐finger, substrate‐free microfiber electrode, the material‐specific and personalized triboelectric signals can be imperceptibly collected for machine ...
Junting Huang +7 more
wiley +1 more source
Advanced Science, EarlyView.Li(Co0.8Ni0.1Mn0.1)O2 and LiFePO4 cathode materials are functional recycled by simple leaching and co‐precipitation methods to synthesize Quaternary iron‐nickel‐cobalt‐manganese hydrotalcites as oxygen‐evolution‐reaction catalysts. The highly disordered structure and strong electronic interactions between metal cations result in excellent catalytic ...
Ronghou Yao +11 more
wiley +1 more source
Bio‐Inspired Strategy for Radiation‐Based Thermal Management and Utilization
Advanced Science, EarlyView.Biological organisms have evolved remarkable strategies to manage and exploit thermal radiation. This review explores bio‐inspired systems that mimic these adaptations—such as radiative cooling, thermal regulation, thermal insulation, water harvesting, infrared camouflage, and infrared detection—and highlights their application in thermal management ...
Hyung Rae Kim +5 more
wiley +1 more source
Generalized lattice gauge theory, spin foams and state sum invariants [PDF]
, 2003 Robert Oeckl
openalex +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
Hierarchical Icephobic Surfaces with Enhanced Photothermal Performance for Sustainable Anti‐Icing
Advanced Science, EarlyView.The armored photothermal icephobic structured surface (APISS) features a hierarchical micro‐nanostructured architecture optimized for enhanced solar absorption, coated with titanium nitride (TiN) nanoparticles to maximize photothermal conversion efficiency and silica encapsulation to ensure exceptional mechanical resilience.
Lei Zhang +7 more
wiley +1 more source