Results 91 to 100 of about 2,431 (270)

The writhe of permutations and random framed knots [PDF]

Random Structures & Algorithms, 2016
We introduce and study the writhe of a permutation, a circular variant of the well-known inversion number. This simple permutation statistics has several interpretations, which lead to some interesting properties. For a permutation sampled uniformly at random, we study the asymptotics of the writhe, and obtain a non-Gaussian limit distribution.
openaire   +4 more sources

Degradable, Skin‐Conformal Nanocomposite‐Based Bioelectronic Patches for High‐Fidelity Electrophysiology and Gesture‐Controlled Robotics

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, Hongna Yuan, Shubo Liu, Abdulkadir Sanli, Emiliano Bilotti, Han Zhang, Pietro Cataldi, Karin Hing, Oliver Fenwick, Colin J. Humphreys, Dimitrios G. Papageorgiou   +10 more
wiley   +1 more source

The extended polar writhe: a tool for open curves mechanics [PDF]

, 2016
A measure of the writhing of a curve is introduced and is used to extend the C?lug?reanu? decomposition for closed curves, as well as the polar decomposition for curves bound between planes.
Prior, C.B., Neukirch, S., Neukirch, Sébastien, Prior, Christopher B   +3 more
core   +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, Lei Wu, Jingran Liu, Damiano Pasini   +3 more
wiley   +1 more source

Rotation and Confined Eruption of a Double Flux-rope System

The Astrophysical Journal
We perform a data-constrained simulation with the zero- β assumption to study the mechanisms of strong rotation and failed eruption of a filament in active region 11474 on 2012 May 5 observed by Solar Dynamics Observatory and Solar Terrestrial Relations ...
X. M. Zhang, J. H. Guo, Y. Guo, M. D. Ding, Rony Keppens   +4 more
doaj   +1 more source

Deformation‐Tolerant Functional Elastomer Overlayers for Haze‐Assisted Light Extraction and Color Conversion in Stretchable Mechanoluminescent Films

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, Seongkyu Song, Soon Moon Jeong, Na Young Ha   +3 more
wiley   +1 more source

An Investigation of Linking Number, Twist, and Writhe, in Knots, Links, Ribbons, and Möbius Ribbons

, 2016
A prominent formula in knot and ribbon theory is White\u27s formula that looks at the relationship between linking number, twist, and writhe. After a brief background in knot theory we look at knots, links, and diagrams of each and we examine their ...
Fatula, Jennifer M. L.
core  

An alternating link with negative writhe that is the realization of a 4.5 turn double crossover cube link.

, 2020
An alternating link with negative writhe that is the realization of a 4.5 turn double crossover cube link.
Xiao-Sheng Cheng (298056), Yuanan Diao (760489)   +1 more
core   +1 more source

Architectural Tuning of Bouligand Electrospun Laminates Enables Coupled Mechanical Robustness and Electromechanical Sensing

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, Daniel P. Ura, Michał Kopacz, Katarzyna Marszalik, Urszula Stachewicz   +4 more
wiley   +1 more source

Discovery of Small-scale Flows in the Void of a Coronal Mass Ejection with High-cadence Images Acquired by the Metis Coronagraph on Board Solar Orbiter

The Astrophysical Journal
On 2022 March 26, the ESA Solar Orbiter mission observed the early evolution of a coronal mass ejection (CME). On that day, the spacecraft was at a heliocentric distance of 0.32 au and a longitude separation from Earth of 74 $\mathop{.}\limits^{\unicode ...
Alessandro Bemporad, Lucia Abbo, Kinga Albert, Emanuele Amato, Vincenzo Andretta, Ruggero Biondo, Aleksandr Burtovoi, Daniele Calchetti, Vania Da Deppo, Yara De Leo, Silvano Fineschi, Federica Frassati, Catia Grimani, Giovanna Jerse, Federico Landini, Salvatore Mancuso, Giampiero Naletto, Gianalfredo Nicolini, Maurizio Pancrazzi, Julian Blanco Rodríguez, Marco Romoli, Giuliana Russano, Clementina Sasso, Daniele Spadaro, Marco Stangalini, Hanna Strecker, David Orozco Suárez, Roberto Susino, Luca Teriaca, Michela Uslenghi, Gherardo Valori   +30 more
doaj   +1 more source