Results 91 to 100 of about 3,196 (276)

Ionic Control of Microstructure and Lubrication in Charged, Physically Cross‐Linked Hydrogels

Advanced Functional Materials, EarlyView.
Here, charged, physically cross‐linked poly(methacrylamide‐co‐methacrylic acid) hydrogels stabilized by a short‐range attractive, long‐range repulsive potential is investigated. This work uncovers how salt addition alters not only swelling, but also the microstructure and dynamics, near‐surface stiffness and charge, and ultimately, its lubricity. Salts
Alexander Deptula, Rosa M. Espinosa‐Marzal   +1 more
wiley   +1 more source

Exploring confinement in Anti-de Sitter space

Journal of High Energy Physics
We study Yang-Mills theory on four dimensional Anti-de Sitter space. The Dirichlet boundary condition cannot exist at arbitrarily large radius because it would give rise to colored asymptotic states in flat space.
Riccardo Ciccone, Fabiana De Cesare, Lorenzo Di Pietro, Marco Serone   +3 more
doaj   +1 more source

Conformal invariance, dark energy, and CMB non-gaussianity [PDF]

, 2011
In addition to simple scale invariance, a universe dominated by dark energy naturally gives rise to correlation functions possessing full conformal invariance.
I. Antoniadis, P. Mazur, E. Mottola
semanticscholar   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Anatomy of null contractions

Journal of High Energy Physics
We introduce null contractions of the Poincare and relativistic conformal algebras. The longitudinal null contraction involves writing the algebra in lightcone coordinates and contracting one of the null directions.
Arjun Bagchi, M Nachiketh, Pushkar Soni
doaj   +1 more source

Anomalous dimensions in hypercubic theories

Journal of High Energy Physics, 2023
We perform a comprehensive perturbative study of the operator spectrum in multi-scalar theories with hypercubic global symmetry. This includes working out symmetry representations and their corresponding tensor structures.
Alexander Bednyakov, Johan Henriksson, Stefanos R. Kousvos   +2 more
doaj   +1 more source

Consistency relations for the conformal mechanism [PDF]

, 2012
We systematically derive the consistency relations associated to the non-linearly realized symmetries of theories with spontaneously broken conformal symmetry but with a linearly-realized de Sitter subalgebra.
P. Creminelli, A. Joyce, J. Khoury, M. Simonovi'c   +3 more
semanticscholar   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

Room‐Temperature, High‐Resolution Soft Anisotropic Conductive Film for Electrical Interfacing in Stretchable Electronics

Advanced Functional Materials, EarlyView.
A UV‐crosslinkable soft anisotropic conductive film (ACF) provides high‐resolution, room‐temperature electrical interfacing. Upon UV exposure, azide crosslinkers within the ACF matrix form covalent bonds with a wide range of C–H‐containing materials, resulting in interfaces that are both mechanically durable and electrically reliable.
Jun Choi, Hyundong Nam, Doowon Park, Woosung Cho, Mingyu Kwak, Taeyeong Kim, Ik‐Soo Kim, Unyong Jeong   +7 more
wiley   +1 more source

Testing our understanding of SCFTs: a catalogue of rank-2 N $$ \mathcal{N} $$ = 2 theories in four dimensions

Journal of High Energy Physics, 2022
In this paper we begin mapping out the space of rank-2 N $$ \mathcal{N} $$ = 2 superconformal field theories (SCFTs) in four dimensions. This represents an ideal set of theories which can be potentially classified using purely quantum field-theoretic ...
Mario Martone
doaj   +1 more source