Results 101 to 110 of about 352,182 (258)

Monolithic Oxidation Enables Ultrathin Vertically Graded Tantalum Oxide for Low‐Voltage, Low‐Variability Memristive Switching

open access: yesAdvanced Functional Materials, EarlyView.
Monolithic UV‐ozone oxidation of Ta forms an ultrathin Ta2O5/TaOx bilayer enabling resistive switching with a vertical defect gradient. A stoichiometric surface layer over an oxygen‐deficient sublayer promotes localized filament nucleation near the top interface, enabling low‐voltage operation, and reduced cycle‐to‐cycle variability.
Seunghoon Yang   +11 more
wiley   +1 more source

INVARIANT METRICS ON THE IWASAWA MANIFOLD

open access: yesThe Quarterly Journal of Mathematics, 2012
We compute the automorphism group of the complex three-dimensional Heisenberg Lie algebra and study its action (by isometries) on the set of inner products of R6. As a consequence, we give a description of the moduli space of invariant metrics on the Iwasawa manifold.
openaire   +2 more sources

ROTATIONALLY INVARIANT COMPLEX MANIFOLDS [PDF]

open access: yesJournal of the Korean Mathematical Society, 2003
The author describes some properties of the complex manifolds of dimension \(n\geq 2\) that admit effective actions of either \(U_n\) or \(SU_n\) by biholomorphic transformations. In a joint paper with \textit{N. Kruzhilin, A. V. Isaev} and \textit{N. G. Kruzhilin} [Can. J. Math.
openaire   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

open access: yesAdvanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang   +12 more
wiley   +1 more source

Symplectic Bott-Chern cohomology of solvmanifolds [PDF]

open access: yes, 2013
We study the symplectic Bott-Chern cohomology by L.-S. Tseng and S.-T.
Daniele Angella   +3 more
core  

Noise‐Limited Bit Precision in Ferroelectric Synaptic Transistors for High‐Resolution Neuromorphic Computing

open access: yesAdvanced Functional Materials, EarlyView.
Low‐frequency noise spectroscopy defines the resolvable conductance states of synaptic FeFETs by coupling read‐current fluctuation with usable dynamic range. The resulting noise‐limited bit precision establishes a universal, device‐agnostic reliability metric beyond the memory window, enabling quantitative benchmarking and rational design of high ...
Jaehong Park   +12 more
wiley   +1 more source

Anti-invariant Riemannian submersions from Kenmotsu manifolds onto Riemannian manifolds

open access: yes, 2015
The purpose of this paper is to study anti-invariant Riemannian submersions from Kenmotsu manifolds onto Riemannian manifolds. Several fundamental results in this respect are proved.

core   +2 more sources

Tian’s invariant of the Grassmann manifold [PDF]

open access: yesThe Journal of Geometric Analysis, 2006
We prove that Tian's invariant on the complex Grassmann manifold $G_{p, q}(\mathbb{C})$ is equal to $1/(p+q)$.
openaire   +3 more sources

Symplectic manifolds and cohomological decomposition [PDF]

open access: yes, 2012
Given a closed symplectic manifold, we study when the Lefschetz decomposition induced by the $\mathfrak{sl}(2;\mathbb{R})$-representation yields a decomposition of the de Rham cohomology.
Daniele Angella   +3 more
core  

Broadband Silicon‐On‐Glass Reflective Dielectric Metasurface for THz Beam Steering in 6G Wireless Networks

open access: yesAdvanced Functional Materials, EarlyView.
A CMOS‐compatible, all‐dielectric Silicon‐on‐Glass reflective metasurface enables low–loss terahertz wavefront control for future 6G wireless communication. Mie‐resonant silicon pillars provide full phase coverage near 500 GHz, achieving experimentally validated single‐, dual‐, and five‐beam steering with sub‐1.5° angular error and less than 3 dB ...
Rithwik Premanand   +6 more
wiley   +1 more source

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