Results 101 to 110 of about 4,018,148 (250)
Twistor strings for N $$ \mathcal{N} $$ = 8 supergravity
Journal of High Energy Physics, 2020 This paper presents a worldsheet theory describing holomorphic maps to twistor space with N $$ \mathcal{N} $$ fermionic directions. The theory is anomaly free when N $$ \mathcal{N} $$ = 8.
David Skinner
doaj +1 more source
, 1977 This thesis is concerned with the problem of "coding" the information of various zero-rest-mass fields into the complex structure of "curved twistor spaces". Chapter 2 is devoted to various preliminaries: a brief outline of twistor theory; an introduction to vector bundles and sheaf cohomology and some of their applications in twistor theory; and a ...
Ward, R, Ward, R. S.
openaire +1 more source
Bistable Isochoric Chiral Metamaterials with Reprogrammable Multiaxial Responses
Advanced Functional Materials, EarlyView.An isochoric bistable rotational unit cell enables in situ modification of internal contact conditions post‐fabrication, without altering the global envelope dimensions of the surrounding architecture. By selectively switching between open and closed states, the tessellated chiral metamaterial can reprogram its volumetric response, including bulk ...
Shujia Chen +3 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Functional elastomer overlayers are integrated onto stretchable ZnS:Cu‐PDMS mechanoluminescent films to regulate light after emission without modifying the emissive composite. NLC‐PU provides haze‐assisted light extraction to enhance green mechanoluminescence, while DCM‐NLC‐PU combines green‐to‐yellow‐orange color conversion with enhanced outward light
Gyudam Jeon +3 more
wiley +1 more source
Twistor theory at fifty: from contour integrals to twistor strings. [PDF]
, 2017 We review aspects of twistor theory, its aims and achievements spanning the last five decades. In the twistor approach, space-time is secondary with events being derived objects that correspond to compact holomorphic curves in a complex threefold-the ...
Lionel J. Mason +2 more
core +2 more sources
Advanced Functional Materials, EarlyView.Bioinspired Bouligand architectures are translated into biodegradable polymer laminates with integrated sensing, revealing how structural design governs multifunctional performance. A 20° interlayer rotation optimizes strength, flexibility, and electromechanical response, while embedded nanotube networks enable real‐time damage detection and wearable ...
Piotr K. Szewczyk +4 more
wiley +1 more source
Heterotic twistor-string theory
, 2007 We reformulate twistor-string theory as a heterotic string based on a twisted (0, 2) model. The path integral localizes on holomorphic maps, while the (0, 2) moduli naturally correspond to the states of N = 4 super-Yang-Mills and conformal supergravity ...
Mason, L, Skinner, D
core +1 more source
Architected Bio‐Based Iontronic Skin With Dual‐Mode Pressure and Strain Sensing
Advanced Functional Materials, EarlyView.Bio‐based acrylates in combination with an ionic liquid create 3D‐printed ionogels with compositionally tuneable mechanics and ionic conductivity. Gyroid architectures amplify low‐pressure sensitivity while preserving robust strain sensing, enabling dual‐mode detection of pressure and deformation.
Maksims Jurinovs +8 more
wiley +1 more source
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
Thermally Robust Room‐Temperature Interlayer Excitons in a Hybrid van der Waals Heterostructure
Advanced Functional Materials, EarlyView.We report an optically active interlayer exciton in a hybrid van der Waals (PEA)2PbBr4/MoS2 heterostructure that remains thermally stable up to 400 K. The emission exhibits polarization anisotropy consistent with an out‐of‐plane optical transition‐dipole component and shows lifetime extension indicative of electron–hole separation.
Seoyeon Ko +9 more
wiley +1 more source