Results 81 to 90 of about 16,187 (262)

Unveiling α‐MoO3 as a High‐Index, Low‐Loss Anisotropic Material: Bridging the Gap From Mid‐Infrared to Ultraviolet Nanophotonics

Advanced Materials, EarlyView.
α‐MoO3 is established as a high‐index, low‐loss anisotropic platform bridging mid‐infrared polaritonics and ultraviolet‐visible nanophotonics. Spectroscopic ellipsometry and calculations reveal refractive indices exceeding 3.9, with the largest in‐plane birefringence among transparent layered crystals at 425–500 nm, enabling zero‐order UV waveplates ...
Adilet N. Toksumakov, Dmitriy V. Grudinin, Georgy A. Ermolaev, Alexey P. Tsapenko, Anton A. Minnekhanov, Konstantin V. Kravtsov, Nikolay V. Pak, Arslan B. Mazitov, Andrey A. Vyshnevyy, Aleksandr S. Slavich, Ivan A. Kruglov, Gleb I. Tselikov, Aleksey V. Arsenin, Kostya S. Novoselov, Valentyn S. Volkov   +14 more
wiley   +1 more source

Horospherical Decision Boundaries for Large Margin Classification in Hyperbolic Space. [PDF]

Adv Neural Inf Process Syst, 2023
Fan X, Yang CH, Vemuri BC.
europepmc   +1 more source

Neutron Reflectometry and Compression of Graded Hydrogel Surfaces

Advanced Materials Interfaces, EarlyView.
Highly‐entangled and covalently‐crosslinked hydrogels with thin and thick surface gel layers are compressed in neutron reflectometry experiments. Surface gel layer thickness dictates the extent to which the polymer network at the surface of a hydrogel collapses, while crosslinking chemistry, and therefore elastic modulus, impacts the pressure at which ...
Kathryn E. Shaffer, Alex Q. Zhang, Mehdi Karimi, Ahmed Al Kindi, Linnaea D. Uliassi, Nemea S. Courelli, Julia J. Ong, Conor D. Pugsley, Andrew R. Rhode, Erik B. Watkins, Rebecca J.L. Welbourn, Alexander Alexeev, Angela A. Pitenis   +12 more
wiley   +1 more source

Hyperbolic photonic topological insulators

Nature Communications
Topological photonics provides a new degree of freedom to robustly control electromagnetic fields. To date, most of established topological states in photonics have been employed in Euclidean space.
Lei Huang, Lu He, Weixuan Zhang, Huizhen Zhang, Dongning Liu, Xue Feng, Fang Liu, Kaiyu Cui, Yidong Huang, Wei Zhang, Xiangdong Zhang   +10 more
doaj   +1 more source

On k -symmetries of hyperbolic spaces

Differential Geometry and its Applications, 2013
Abstract We determine all the possible pointwise k -symmetric spaces of negative constant curvature. In general, such spaces are not k -symmetric. In fact we show that, for all n ⩾ 3 , k ≠ 2 , H n is not k -symmetric, i.e., for any set of selected k -symmetries, one for each point of H n , the regularity ...
Costa, Simone, Pianta, Silvia
openaire   +3 more sources

In Situ Change in Contact Angle of a Sessile Droplet on a Magnetoactive Elastomer

Advanced Materials Interfaces, EarlyView.
Contact angles of persistent μL$\mu{\rm L}$‐sized water droplets on a mechanically soft MAE surface under time varying magnetic fields differ from those of newly deposited droplets. The ability to quickly alter the material properties allows one to observe intriguing droplet‐material interactions.
Raphael Kriegl, Alexander Kovalev, Stanislav Gorb, Mikhail Shamonin   +3 more
wiley   +1 more source

HLoOP—Hyperbolic 2-Space Local Outlier Probabilities

IEEE Access
Hyperbolic geometry has recently garnered considerable attention in machine learning due to its ability to embed hierarchical graph structures with low distortions for further downstream processing.
Clemence Allietta, Jean-Philippe Condomines, Jean-Yves Tourneret, Emmanuel Lochin   +3 more
doaj   +1 more source

Simulating hyperbolic space on a circuit board. [PDF]

Nat Commun, 2022
Lenggenhager PM, Stegmaier A, Upreti LK, Hofmann T, Helbig T, Vollhardt A, Greiter M, Lee CH, Imhof S, Brand H, Kießling T, Boettcher I, Neupert T, Thomale R, Bzdušek T.   +14 more
europepmc   +1 more source

Liquid Metal‐Based Stretchable Strain Sensor for Fruit Growth Monitoring

Advanced Materials Technologies, EarlyView.
Schematic overview of the fruit growth sensor development workflow, including sensor fabrication by injection molding, electromechanical and environmental characterization, mechanical stability testing, electronic readout integration, and outdoor field validation for monitoring of fruit growth under practical orchard conditions.
Asad Ullah, Lennert Purnal, Maximilian Krack, Sander Vijgen, Thijs Vandenryt, Dieter Reenaers, Ronald Thoelen, Wim Deferme   +7 more
wiley   +1 more source

Joint Detection of Community and Structural Hole Spanner of Networks in Hyperbolic Space. [PDF]

Entropy (Basel), 2022
Nie Q, Jiang H, Zhong SD, Wang Q, Wang JJ, Wang H, Wu LH.   +6 more
europepmc   +1 more source