Results 111 to 120 of about 10,652 (317)
Spacetime representation of topological phononics
New Journal of Physics, 2018 Non-conventional topology of elastic waves arises from breaking symmetry of phononic structures either intrinsically through internal resonances or extrinsically via application of external stimuli.
Pierre A Deymier +3 more
doaj +1 more source
Strain‐Activated Photo‐Dehalogenation Unlocks Low‐Energy One and Two‐Photon 3D Microfabrication
Advanced Functional Materials, EarlyView.5,14‐NMI‐Cz acts, conversely to its 7,10‐NMI‐Cz(7,10‐'dibromo‐2‐(2,6‐diisopropylphenyl)‐1H‐benzo[lmn]carbazolo[9,1‐bc][2,8]phenanthroline‐1,3(2H)‐dione) counterpart, as modular photoinitiator with panchromatic photoactivity, featuring a weak C–Br bond from geometric strain for efficient Type I & II initiation. These studies demonstrate applicability of
Kacper Piskorz +10 more
wiley +1 more source
Cubic Twistorial String Field Theory
, 2004 Witten has recently proposed a string theory in twistor space whose D-instanton contributions are conjectured to compute N=4 super-Yang-Mills scattering amplitudes.
A. Neitzke +15 more
core +1 more source
Compatible complex structures on twistor space [PDF]
Annales de l'Institut Fourier, 2011 Let M be a Riemannian 4-manifold. The associated twistor space is a bundle whose total space Z admits a natural metric. The aim of this article is to study properties of complex structures on Z which are compatible with the fibration and the metric. The results obtained enable us to translate some metric properties on M (scalar flat, scalar-flat Kähler.
openaire +3 more sources
Advanced Functional Materials, EarlyView.Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey +5 more
wiley +1 more source
Two‐Dimensional Materials as a Multiproperty Sensing Platform
Advanced Functional Materials, EarlyView.Various sensing modalities enabled and/or enhanced by two‐dimensional (2D) materials are reviewed. The domains considered for sensing include: 1) optoelectronics, 2) quantum defects, 3) scanning probe microscopy, 4) nanomechanics, and 5) bio‐ and chemosensing.
Dipankar Jana +11 more
wiley +1 more source
Advanced Functional Materials, EarlyView.The disordered growth of dendrites, corrosion, parasitic side reactions, slow de‐solvation kinetics, and inherent safety risks significantly hinder the practical deployment of conventional liquid electrolyte zinc‐ion batteries. In contrast, the novel PU‐EG+DMPA‐Zn polyurethane quasi‐solid‐state electrolyte, enriched with abundant polar functional ...
Ruiqi Liu +10 more
wiley +1 more source
3D conformal field theory in twistor space
Journal of High Energy PhysicsThe aim of this paper is to study three dimensional Lorentzian conformal field theories in twistor space. We formulate the conformal Ward identities and solve for two and three point Lorentzian Wightman functions.
Aswini Bala +4 more
doaj +1 more source
Conformal higher spin scattering amplitudes from twistor space
Journal of High Energy Physics, 2017 We use the formulation of conformal higher spin (CHS) theories in twistor space to study their tree-level scattering amplitudes, finding expressions for all three-point M H V ¯ $$ \overline{\mathrm{MHV}} $$ amplitudes and all MHV amplitudes involving ...
Tim Adamo +2 more
doaj +1 more source
Kähler curvature identities for twistor spaces
Illinois Journal of Mathematics, 1995 The twistor spaces \(Z\) of an oriented Riemannian 4-manifold admits a natural 1-parameter family of Riemannian metrics \(h_t\), \(t > 0\), compatible with the almost complex structures \(J_1\) and \(J_2\) introduced, respectively, by Atiyah, Hitchin and Singer, and Eells and Salamon. In the present note, we describe the 4-manifolds \(M\) whose twistor
Davidov, Johann +2 more
openaire +4 more sources