Results 81 to 90 of about 73,457 (292)

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Digital fixed points, approximate fixed points, and universal functions

Applied General Topology, 2016
A. Rosenfeld [23] introduced the notion of a digitally continuous function between digital images, and showed that although digital images need not have fixed point properties analogous to those of the Euclidean spaces modeled by the images, there often ...
Laurence Boxer, Ozgur Ege, Ismet Karaca, Jonathan Lopez, Joel Louwsma   +4 more
doaj   +1 more source

Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization

Advanced Functional Materials, EarlyView.
We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat, Alexander Peraire‐Bueno, A. John Hart, Randall M. Erb   +3 more
wiley   +1 more source

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

Advanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk, Lukas Benecke, Chokri Cherif, Johannes Mersch   +3 more
wiley   +1 more source

Topological structuring of the digital plane [PDF]

Discrete Mathematics & Theoretical Computer Science, 2013
Combinatorics We discuss an Alexandroff topology on ℤ2 having the property that its quotient topologies include the Khalimsky and Marcus-Wyse topologies. We introduce a further quotient topology and prove a Jordan curve theorem for it.
openaire   +4 more sources

Standardized Effect Measures Informing Next‐Generation Strategies for Mechanical Stimulation in Cartilage Tissue Engineering

Advanced Healthcare Materials, EarlyView.
This systematic review quantitatively compares conventional mechanical stimulation strategies in cartilage tissue engineering across 85 heterogeneous in vitro studies. Applying standardized effect measures, meta‐analysis reveals that combined compression and shear loading optimally promotes cartilage matrix development.
Jiaqi K. Shen, Tony B. Huang, Catherine E. Davey, Elias Salzer, Gerjo J. V. M. Van Osch, Sandra J. Shefelbine, Marcus G. Pandy, Kathryn S. Stok   +7 more
wiley   +1 more source

Digital quotient spaces and digital quotient maps

Applied General Topology
In this paper we give the definitions of digital quotient space as well as digital quotient map. We also show some propositions about digital quotient maps and show that the subdivision projection is also a digital quotient map.
Zhifeng Qiu, Hao Zhao
doaj   +1 more source

Digital Topology

The Insight Journal, 2006
This documents describes a set of classes to integrate digital topology in the Insight Toolkit, with an application to homotopic thinning. The skeletonization filter implemented using our set of classes is twice as fast as BinaryThinningImageFilter and can be used on images of any dimension.
openaire   +1 more source

A Unified Topological Framework for Digital Imaging [PDF]

, 2011
In this article, a tractable modus operandi is proposed to model a (binary) digital image (i.e., an image defined on Zn and equipped with a standard pair of adjacencies) as an image defined in the space of cubical complexes (Fn). In particular, it is shown that all the standard pairs of adjacencies in Zn can then be correctly modelled in Fn.
Mazo, Loïc, Passat, Nicolas, Couprie, Michel, Ronse, Christian   +3 more
openaire   +2 more sources

Microgel‐Based 3D Bioprinting: A Convergent Strategy Integrating Material Design, Jamming Dynamics, and Biological Function

Advanced Healthcare Materials, EarlyView.
Microgel‐based 3D printed constructs represent a compelling and versatile innovation for engineering architecturally complex, dynamically remodelable, and biocompatible structures with high structural fidelity and bioactivity. By integrating material design, biofabrication, and biological function, these systems enable the development of adaptive ...
Elena Ghighină, Andreea Ioana Dinu, Jana Ghițman   +2 more
wiley   +1 more source