Results 241 to 250 of about 9,774 (301)

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Scaling analysis and experiments for the apparent stiffness of woodpile lattices with tubular struts. [PDF]

Sci Rep
Shalchy F, Askarinejad S, Bhaskar A.
europepmc   +1 more source

A Bottom-Up Design Framework for Multifunctional Lattice Metamaterials. [PDF]

Adv Sci (Weinh)
Hu Z, Tao Q, Ding J, Qu S, Ye H, Chua JW, Niu T, Li R, Ma WWS, Mo H, Liu H, Zhai W, Li X, Song X.   +13 more
europepmc   +1 more source

Expanding DNA alphabet adds a previously unknown dimension to nanostructures. [PDF]

Sci Adv
Zhou K, Hoshika S, Cheng J, Lin C, Benner S, Ke Y.   +5 more
europepmc   +1 more source

Plasmonic Dirac-vortex lasers via three-dimensional photonic mass vortices engineering. [PDF]

Nat Commun
Zhong M, Bi X, Song M, Mou N, Zhang D, Zhuo X, Hu J, Xie B, Ao X, Guan J.   +9 more
europepmc   +1 more source

Selective Excitation of Lanthanide Co-Dopants in Colloidal Lead-Free Halide Perovskite Nanocrystals as a Multilevel Anti-Counterfeiting Approach. [PDF]

Nanomaterials (Basel)
Balitskii O, Kagabo W, Radovanovic PV.
europepmc   +1 more source

Skeletal High-Strength Nanoporous Copper and Metamaterials: The Hakka Tulou Design Heritage. [PDF]

Adv Mater
Zhong H, Song T, Liu H, Li C, Li C, Wen M, Ning Z, Gu J, Qian M.   +8 more
europepmc   +1 more source

CHARACTERIZING TREES IN CONCEPT LATTICES

International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 2008
Concept lattices are systems of conceptual clusters, called formal concepts, which are partially ordered by the subconcept/superconcept relationship. Concept lattices are basic structures used in formal concept analysis. In general, a concept lattice may contain overlapping clusters and need not be a tree.
Radim Belohlávek, Bernard De Baets, Jan Outrata, Vilém Vychodil   +3 more
openaire   +2 more sources

Reducing fuzzy relation equations via concept lattices

Fuzzy Sets and Systems, 2023
This paper has taken into advantage the relationship between Fuzzy Relation Equations (FRE) and Concept Lattices in order to introduce a procedure to reduce a FRE, without losing information.
David Lobo, VÍCTOR López-Marchante, Jesus Medina   +2 more
exaly   +3 more sources

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The approximations in rough concept lattice and approximable concept lattice

Journal of Intelligent & Fuzzy Systems, 2017
In a formal context, the lower and upper approximations of an arbitrary set of objects are constructed by object-oriented concepts, attribute-oriented concepts, approximable concepts and weak approximable concepts, respectively. We first define the concept of approximations based on lattice-theoretic operators, and the properties of them are discussed.
Qimei Xiao, Guangming Lang, Wenjun Liu, Mingjie Cai   +3 more
openaire   +1 more source