Results 51 to 60 of about 102,528 (248)

Avalanche Behavior in an Absorbing State Oslo Model

open access: yes, 2004
Self-organized criticality can be translated into the language of absorbing state phase transitions. Most models for which this analogy is established have been investigated for their absorbing state characteristics.
Gunnar Pruessner   +5 more
core   +1 more source

Dynamics of a ferromagnetic domain wall: avalanches, depinning transition and the Barkhausen effect [PDF]

open access: yes, 1998
We study the dynamics of a ferromagnetic domain wall driven by an external magnetic field through a disordered medium. The avalanche-like motion of the domain walls between pinned configurations produces a noise known as the Barkhausen effect. We discuss
A. A. Middleton   +78 more
core   +2 more sources

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy   +6 more
wiley   +1 more source

Barrier effect of grain boundaries on the avalanche propagation of polycrystalline plasticity

open access: yes, 2016
To investigate the barrier effect of grain boundaries on the propagation of avalanche-like plasticity at the atomic-scale, we perform three-dimensional molecular dynamics simulations by using simplified polycrystal models including symmetric-tilt grain ...
Niiyama, Tomoaki, Shimokawa, Tomotsugu
core   +1 more source

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Influence of massive material injection on avalanche runaway generation during tokamak disruptions

open access: yes, 2019
In high-current tokamak devices such as ITER, a runaway avalanche can cause a large amplification of a seed electron population. We show that disruption mitigation by impurity injection may significantly increase the runaway avalanche growth rate in such
Embréus, O   +3 more
core   +1 more source

Nanodiamond‐Based Quantum Sensing Reveals Changes in Endo‐Lysosomal Activity of Stimulated Cardiac Fibroblasts in a Cellular Fibrosis Model

open access: yesAdvanced Functional Materials, EarlyView.
Quantum sensing reveals intricate patterns linking endo‐lysosomal maturation to cardiac fibrosis progression, highlighting complexity in cellular remodeling. This study investigates fibroblast‐to‐myofibroblast transition under cell aging, stiffness, and TGF‐β stimulation, comparing nanodiamond uptake, endo‐lysosomal dynamics, and free radical ...
Aldona Mzyk   +3 more
wiley   +1 more source

Spin Defects in Hexagonal Boron Nitride as 2D Strain Sensors

open access: yesAdvanced Functional Materials, EarlyView.
We demonstrate that boron‐vacancy (VB${\rm V}_{\rm B}$) centers in hexagonal boron nitride (hBN) enable quantitative strain sensing with sub‐micrometer resolution. Using this approach under continuously tunable in‐plane stress, we precisely quantify strain‐induced shifts of the E2g${\rm E}_{2{\rm g}}$ Raman mode in multilayer hBN, establishing VB${\rm ...
Zhao Mu   +7 more
wiley   +1 more source

Key-controlled Rijndael algorithm with multiple S-boxes

open access: yesTongxin xuebao, 2007
According to the design criterion of S-box in Rijndael algorithm,a number of S-boxes with good crypto-graphic properties were constructed,and the avalanche probabilities of these S-boxes were analyzed from variance point of view.Based on these studies,a ...
YIN Xin-chun 1, YANG Jie 1, XIE Li 2
doaj   +2 more sources

Kriptografi Teks Berbasis Algoritma Substitusi Vigenere Cipher 8 Bit

open access: yesJurnal Masyarakat Informatika
Vigenere Cipher merupakan salah satu algoritma kriptografi klasik dalam dunia kriptografi. Penelitian ini berfokus pada penggunaan metode Vigenere Cipher dan implementasinya dalam mengamankan sebuah teks pesan berbentuk ASCII.
Nida Aulia Karima   +4 more
doaj   +1 more source

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