Results 91 to 100 of about 4,018,148 (250)
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 +7 more
wiley +1 more source
Geometrical aspects of spinor and twistor analysis [PDF]
This work is concerned with two examples of the interactions between differential geometry and analysis, both related to spinors. The first example is the Dirac operator on conformal spin manifolds with boundary.
Calderbank, David M. J.
core
Geometry and kinematics induced by biquaternionic and twistor structures
, 2021 The algebra of biquaternions possess a manifestly Lorentz invariant form and induces an extended space-time geometry. We consider the links between this complex pre-geometry and real geometry of the Minkowski space-time.
Kassandrov V.V. +3 more
core +1 more source
Fiber‐Based Wearable Electronics as Adaptive Biointerfaces for Healthcare Applications
Advanced Functional Materials, EarlyView.Fiber‐based wearable electronics have been extensively studied as adaptive healthcare biointerfaces. In this review, we classify and introduce fiber‐based systems according to biointerface design, conductive materials, transduction mechanisms, and healthcare applications, and provide a perspective on their translation toward reliable, continuous ...
Sangwoo Hong +5 more
wiley +1 more source
, 1984 The aim of this paper is to give a detailed exposition of the relation between the geometry of twistor space and the geometry of Minkowski space.
van den Broek, P.M.
core +1 more source
Hermitian Ricci Tensor of Twistor Space
, 2020 Twistor Space was first described by Roger Penrose and Malcolm MacCallum in the 1960s. Let (N, h) be an oriented Riemannian 4-manifold then twistor space of (N, h) is the two-sphere subbundle W of A~T N which has an l-parameter family of Riemannian ...
Amer, Hafiza Rumlah
core
Advanced Functional Materials, EarlyView.A degradable, skin‐conformal bioelectronic patch combines a starch‐dominated nanocomposite conductor with a gelatin substrate to enable sensitive strain sensing, high‐fidelity electrocardiography, electromyography, electrooculography, and machine‐learning‐assisted gesture control.
Ming Dong +10 more
wiley +1 more source
On AdS4 deformations of celestial symmetries
Journal of High Energy PhysicsCelestial holography has led to the discovery of new symmetry algebras arising from the study of collinear limits of perturbative gravity amplitudes in flat space.
Roland Bittleston +5 more
doaj +1 more source
Integrable deformations from twistor space
SciPost PhysicsIntegrable field theories in two dimensions are known to originate as defect theories of 4d Chern-Simons and as symmetry reductions of the 4d anti-self-dual Yang-Mills equations.
Lewis T. Cole, Ryan A. Cullinan, Ben Hoare, Joaquin Liniado, Daniel C. Thompson
doaj +1 more source
Twistor description of spinning particles in AdS
Journal of High Energy Physics, 2018 The two-twistor formulation of particle mechanics in D-dimensional anti-de Sitter space for D = 4, 5, 7, which linearises invariance under the AdS isometry group Sp(4; K $$ \mathbb{K} $$) for K=ℝ,ℂ,ℍ $$ \mathbb{K}=\mathbb{R},\mathbb{C},\mathrm{\mathbb{H}}
Alex S. Arvanitakis +2 more
doaj +1 more source