Results 101 to 110 of about 100,119 (309)

Experimental Analysis and Physics‐Based Analytical Model on Twisted and Coiled Artificial Muscles

Advanced Engineering Materials, EarlyView.
Twisted and coiled artificial muscles made from silver‐coated nylon fibers are investigated through experiments and analytical modeling. The actuators achieve contractions up to 19.3% and specific work of 8 kJ kg−1, though efficiency remains limited (≈0.15%) by thermal losses.
Salvatore Garofalo, Chiara Morano, Leonardo Pagnotta, Luigi Bruno   +3 more
wiley   +1 more source

Erratum to: On the Noether charge and the gravity duals of quantum complexity

Journal of High Energy Physics, 2019
In the original published version of this paper, the corresponding author was selected by mistake during the review process. Here we state that Minyong Guo is the corresponding author of this paper.
Zhong-Ying Fan, Minyong Guo
doaj   +1 more source

Universal Behaviors of Speed of Sound from Holography

, 2017
We investigate the speed of sound in $(d+1)$-dimensional field theory by studying its dual $(d+2)$-dimensional gravity theory from gauge/gravity correspondence.
Yang, Yi, Yuan, Pei-Hung
core   +1 more source

Gravity, particle physics and their unification [PDF]

, 2000
We explain the need for a theory of quantum gravity and some general ideas about string theory, including the idea of the derivation of the Hawking Bekenstein entropy formula for extremal black holes.
Maldacena, Juan
core   +3 more sources

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

On multi-field flows in gravity and holography

Journal of High Energy Physics, 2018
We perform a systematic analysis of flow-like solutions in theories of Einstein gravity coupled to multiple scalar fields, which arise as holographic RG flows as well as in the context of cosmological solutions driven by scalars.
Francesco Nitti, Leandro Silva Pimenta, Danièle A. Steer   +2 more
doaj   +1 more source

Effective action in a higher-spin background [PDF]

, 2011
We consider a free massless scalar field coupled to an infinite tower of background higher-spin gauge fields via minimal coupling to the traceless conserved currents.
A Campoleoni, A Campoleoni, A Campoleoni, A Fotopoulos, A Fotopoulos, A Sagnotti, A Sagnotti, AA Tseytlin, AC Petkou, AD Sakharov, AM Polyakov, AY Segal, B Sundborg, B Wit de, C Fronsdal, C Fronsdal, D Anselmi, D Anselmi, D Francia, D Francia, D Francia, D Francia, D Francia, D Francia, D Francia, DJ Gross, E Sezgin, E Sezgin, EP Wigner, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, Euihun Joung, FA Berends, H Liu, H Weyl, IL Buchbinder, IR Klebanov, JE Moyal, Jihad Mourad, KB Alkalaev, M Henneaux, M Visser, MA Vasiliev, MA Vasiliev, MA Vasiliev, MA Vasiliev, MA Vasiliev, MA Vasiliev, MG Eastwood, ND Birrell, OA Gelfond, R Manvelyan, R Manvelyan, R Manvelyan, R Manvelyan, R Manvelyan, RdM Koch, RR Metsaev, S Giombi, S Weinberg, SE Konstein, X Bekaert, X Bekaert, X Bekaert, Xavier Bekaert   +69 more
core   +3 more sources

Active Thermal Field Integration for Marangoni‐Driven Salt Rejection and Water Collection

Advanced Functional Materials, EarlyView.
A thermal gradient fabric (TGF) evaporator with an auxiliary active thermal field can simultaneously increase evaporation rates and achieve long‐term salt rejection. The auxiliary active thermal field is well integrated with solar energy to construct moderate, extensive, and circulating Marangoni flow for salt rejection.
Can Ge, Shuai Guo, Wei Li, Xunlong Zhang, Bin Chen, Xiao Feng, Shichang Yang, Duo Xu, Zhen Yu, Sai Kishore Ravi, Weilin Xu, Jian Fang, Swee Ching Tan   +12 more
wiley   +1 more source

On holographic confining QFTs on AdS

Journal of High Energy Physics
Holographic quantum field theories that confine in flat space, are considered on a fixed AdS space. The space of holographic solutions for such theories is constructed and three types of regular solutions are found.
Ahmad Ghodsi, Elias Kiritsis, Francesco Nitti   +2 more
doaj   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source