Results 61 to 70 of about 139,050 (252)

Constraining the Anisotropic Expansion of Universe

, 2013
We study the possibly existing anisotropy in the accelerating expansion universe with the Union2 Type Ia supernovae data and Gamma-ray burst data. We construct a direction-dependent dark energy model and constrain the anisotropy direction and strength of
Cai, Rong-Gen, Ma, Yin-Zhe, Tang, Bo, Tuo, Zhong-Liang   +3 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Higher anisotropic d-wave symmetry in cuprate superconductors

, 1999
We derive a pair potential from tight binding further neighbours attraction that leads to superconducting gap symmetry similar to that of the phenomenological spin fluctuation theory of high temperature superconductors (Monthoux, Balatsky, Pines, Phys ...
Annett A F, de Vaulchier L A, Ghosh Haranath, Haranath Ghosh, Kelley R J, Ma J, Mesot J, Mills A J, Miyake K, Ramakrishnan T V, Varelogiannis G   +10 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

New Class of Generalized Extensive Entropies for Studying Dynamical Systems in Highly Anisotropic Phase Space

, 2013
Starting from the geometrical interpretation of the R\'enyi entropy, we introduce further extensive generalizations and study their properties.
Sonnino, Giorgio, Steinbrecher, György
core   +1 more source

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

Advanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng, Xinxin Wang, Ruochao Zhao, Zhendong Li, Kai Liu, Ke Yuan, Jia An, Xinwei Li, Chee Kai Chua, Zhonggang Wang   +9 more
wiley   +1 more source

Non-negative mixed finite element formulations for a tensorial diffusion equation

, 2009
We consider the tensorial diffusion equation, and address the discrete maximum-minimum principle of mixed finite element formulations. In particular, we address non-negative solutions (which is a special case of the maximum-minimum principle) of mixed ...
A.J. Valocchi, Borsuk, Boyd, Brezzi, Burman, Burman, Chadwick, Chen, Christie, Ciarlet, Ciarlet, Evans, Fletcher, Gilbarg, Han, Herrera, Hoteit, Hughes, K.B. Nakshatrala, Karátson, Karátson, Krizek, Krizek, Le Potier, Lipnikov, Lipnikov, Liska, Luenberger, Masud, McOwen, Mlacnik, Nakshatrala, Nocedal, Nordbotten, Pinder, Raviart, Vanselow, Varga, Varga   +38 more
core   +1 more source

Electroactive Liquid Crystal Elastomers as Soft Actuators

Advanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Stable Multipoint Flux Approximation (MPFA) Saturation Solution for Two-Phase Flow on Non-K-Orthogonal Anisotropic Porous Media

Technologies
This paper extends the multipoint flux approximation (MPFA-O) method to model coupled pressure and saturation dynamics in subsurface reservoirs with heterogeneous anisotropic permeability and non-K-orthogonal grids.
Pijus Makauskas, Mayur Pal
doaj   +1 more source

Short-range interaction vs long-range correlation in bird flocks

, 2015
Bird flocks are a paradigmatic example of collective motion. One of the prominent experimental traits discovered about flocks is the presence of long range velocity correlations between individuals, which allow them to influence each other over the large
Cavagna, Andrea, Del Castello, Lorenzo, Dey, Supravat, Giardina, Irene, Melillo, Stefania, Parisi, Leonardo, Viale, Massimiliano   +6 more
core   +1 more source