Results 61 to 70 of about 115,585,122 (266)

Genetically Programmed Shape‐Morphing of Engineered Living Materials

Advanced Functional Materials, EarlyView.
Here, bacterial and mammalian engineered living materials (ELMs) are presented, in which living cells direct genetically programmed and enzymatically mediated shape‐morphing. The resulting deformation and shape‐recovery can be actuated in a genetically controlled manner by an ELM incorporating out‐of‐equilibrium counteracting biochemical reactions with
Jan Becker, Yuchen Liu, Miguel Baños, Rosanne Schmachtenberg, Mahmudul Hasan, Claudia Fink‐Straube, Luai R. Khoury, Wilfried Weber   +7 more
wiley   +1 more source

Impact of charge on traversable wormhole solutions and modified f(R, ϕ) gravity

Nuclear Physics B
In this paper, we investigate the traversable wormhole solutions in the presence of charge within the framework of f(R, ϕ) gravity, where R represents the Ricci scalar and ϕ denotes the scalar potential, respectively.
Adnan Malik, M. Waqas Aslam, Wenbin Lin, Muhammad Kashif Shafiq, Fatemah Mofarreh, Ramy M. Hafez   +5 more
doaj   +1 more source

Magnetically Driven Biofabrication for Tissue Engineering: From Nanoparticle Design to Mag‐ATMP Translation

Advanced Healthcare Materials, EarlyView.
Magnetically responsive nanoparticles enable remote control over biomaterials, cells, and engineered tissues. This review summarizes material design, biological safety, fabrication and actuation strategies, computational validation, and translational pathways that support the development of magnetic tissue‐engineering platforms and future magnetically ...
Konstantinos Ioannidis, Dimitrios Lefas, Maya Guilliams, Jackie Van Grootenbril, Isaak Decoene, Dimitrios Sakellariou, Bart Smeets, Stefanos Mourdikoudis, Ioannis Papantoniou   +8 more
wiley   +1 more source

Effect of scalar potential and Karmarkar condition on charged traversable wormholes

Physics Letters B
This paper investigates charged traversable wormhole solutions in f(R, ϕ) modified gravity, where R denotes the Ricci scalar and ϕ represents a scalar field.
Adnan Malik, Zoya Asghar, M. Zeeshan Gul, Wenbin Lin, Fatemah Mofarreh   +4 more
doaj   +1 more source

Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity

Advances in High Energy Physics, 2013
The study of energy conditions has many significant applications in general relativistic and cosmological contexts. This paper explores the energy conditions in the framework of the most general scalar-tensor theory with field equations involving second ...
M. Sharif, Saira Waheed
doaj   +1 more source

Rational Tuning of Hygroscopic Oscillation of Stacked Nanoflake Assemblies for Continuous Ambient Energy Harvesting

Advanced Materials, EarlyView.
Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang, Jimin Fu, Gesa Zhang, Zhihua Liang, Boxun Zhang, Haimin Yao   +5 more
wiley   +1 more source

Thin accretion disk signatures in dynamical Chern-Simons-modified gravity [PDF]

, 2010
A promising extension of general relativity is Chern-Simons (CS)-modified gravity, in which the Einstein-Hilbert action is modified by adding a parity-violating CS term, which couples to gravity via a scalar field.
Lobo, Francisco S N, Harko, T, Harko, Tiberiu, Lobo, FSN, Kovcs, Z, Kovács, Zoltán   +5 more
core   +1 more source

Can Elastomers Combine Stiffness, Toughness and Fatigue Resistance?

Advanced Materials, EarlyView.
This review studies how the molecular and macroscopic architecture of elastomers influence their mechanical properties including: stiffness, stretchability, toughness, fatigue resistance, and damping behavior. By linking the structure to performance, it proposes design principles for advanced elastomeric systems that combine mechanical properties ...
Eva Baur, Esther Amstad
wiley   +1 more source

Black hole surrounded by perfect fluid dark matter in STV gravity: particle dynamics, thermodynamics, gravitational weak lensing and EHT tests

European Physical Journal C: Particles and Fields
In this work, we explore the physical and observational properties of a static, spherically symmetric black hole solution in scalar–tensor–vector gravity (STVG), also known as modified gravity (MOG), in the presence of perfect fluid dark matter (PFDM ...
Sirojiddin Saydullayev, Isomiddin Nishonov, Muysin Dusaliyev, Obid Xoldorov, Sardor Murodov, Shavkat Karshiboev, Sunnatillo Urinov, Bekzod Rahmatov   +7 more
doaj   +1 more source

Analyzing gravastar structure with the Finch-Skea metric in extended modified symmetric teleparallel gravity

Nuclear Physics B
This study analyzes the physical features of a gravastar within the f(Q,T) gravity framework, where Q is the non-metricity scalar and T is the trace of the energy-momentum tensor.
Iqra Ibrar, M. Sharif
doaj   +1 more source