Results 81 to 90 of about 100,249 (259)

Physics‐Based Compact Modeling of Advanced 3D Nanoscale Vertical NAND Flash Memory

Advanced Electronic Materials, EarlyView.
For advanced 3D NAND flash memory, a unified compact model for SPICE is proposed that spans from the intrinsic unit cell to the full string and captures the electrostatic coupling with adjacent inhibit strings. It can successfully predict read behavior, program/erase dynamics, and interactions between neighboring cells, reflecting array‐level behavior ...
Ilho Myeong, Seonho Shin, Ickhyun Song
wiley   +1 more source

Spatiotemporal Encoding With Nonlinear Gradient Hardware Using Pulseq: From Principles to Practical Demonstration. [PDF]

Magn Reson Med
Purpose Provide the theoretical foundation and the first practical demonstration of spatiotemporal encoding (SPEN) using additional nonlinear gradient hardware. Methods The quadratic phase profile can be generated either by a chirped‐RF pulse combined with a constant gradient or, directly, by a quadratic gradient pulse.
Holl A, Zijlstra F, Zaitsev M, Hufschmidt J, Tashakori S, Schallner N, Stieglitz T, Gröbner J, Littin S.   +8 more
europepmc   +2 more sources

Machine Learning‐Assisted Second‐Order Perturbation Theory for Chemical Potential Correction Toward Hubbard U Determination

Advanced Intelligent Discovery, EarlyView.
In this work, the Doubao large language model (LLM) is involved in the formula derivation processes for Hubbard U determination regarding the second‐order perturbations of the chemical potential. The core ML tool is optimized for physical domain knowledge, which is not limited to parameter prediction but rather serves as an interactive physical theory ...
Mingzi Sun, Tong Wu, Baian Chen, Zikang Li, Qiuyang Lu, Lu Lu, Hon Ho Wong, Cheuk Hei Chan, Bolong Huang   +8 more
wiley   +1 more source

Thermometric Based‐Microswimmers with Chemical and Optical Engines

Advanced Intelligent Systems, EarlyView.
Temperature sensing at small scales is typically performed using passive luminescent particles. Here, an alternative approach is demonstrated by integrating upconversion thermometry into self‐propelled microswimmers powered by chemical fuels or light. This strategy offers a step toward dynamic thermal sensing at the microscale, relevant to both lab‐on ...
João M. Gonçalves, Katherine Villa
wiley   +1 more source

On a parabolic-hyperbolic Penrose-Fife phase-field system

Electronic Journal of Differential Equations, 2002
The initial and boundary value problem is studied for a non-conserved phase-field system derived from the Penrose-Fife model for the kinetics of phase transitions.
Pierluigi Colli, Maurizio Grasselli, Akio Ito   +2 more
doaj  

Nonlinear scheme with high accuracy for nonlinear coupled parabolic–hyperbolic system

Journal of Computational and Applied Mathematics, 2011
The authors construct an unconditionally stable nonlinear three-level scheme with second-order \(H^1\)- and \(L^2\)-norm accuracy in temporal and spatial variables, respectively, for two-dimensional nonlinear parabolic-hyperbolic systems. The stability and convergence properties of this scheme are rigorously studied.
Cui, Xia, Yue, Jing-yan, Yuan, Guang-wei
openaire   +2 more sources

Controllability results for some nonlinear coupled parabolic systems by one control force [PDF]

, 2006
In this paper, we present new controllability results for some nonlinear coupled parabolic systems considered in a bounded domain Ω of IRN (with N ≥ 1 being arbitrary) when the control force acts on a unique equation of the system through an ...
González Burgos, Manuel, Pérez García, Rosario   +1 more
core  

Spin Dynamics of Excitons and Carriers in Mixed‐Cation MAxFA1–xPbI3 Perovskite Crystals: Alloy Fluctuations Probed by Optical Orientation

Advanced Physics Research, EarlyView.
The impact of alloy fluctuations on the spin dynamics of mixed‐cation MAxFA1‐xPbI3 perovskite single crystals is studied experimentally by means of polarized time‐resolved photoluminescence. The high optical orientation degree, reaching 80% for x = 0.1 and 0.8, displays a minimum of 60% for x = 0.4.
Boris F. Gribakin, Nataliia E. Kopteva, Dmitri R. Yakovlev, Ilya A. Akimov, Ina V. Kalitukha, Bekir Turedi, Maksym V. Kovalenko, Manfred Bayer   +7 more
wiley   +1 more source

Interconversion of Optical to Terahertz Pulses in Nonlinear Beta Barium Borate Crystal

Advanced Physics Research, EarlyView.
ABSTRACT Low‐temperature β‐phase barium borate (β‐BBO) is an important nonlinear crystal, widely utilized for optical second‐harmonic (SH) generation. Recent re‐measurements of refractive indices in the terahertz (THz) range reveal that β‐BBO is a positive uniaxial crystal.
Yingyu Guo, Boyuan Chen, Zhangshun Li, Zhiqiang Lan, Huiping Zhang, Lin Xi, Zuanming Jin, Yan Peng, Yiming Zhu   +8 more
wiley   +1 more source

Positive Fitted Finite Volume Method for Semilinear Parabolic Systems on Unbounded Domain

Axioms
This work deals with a semilinear system of parabolic partial differential equations (PDEs) on an unbounded domain, related to environmental pollution modeling.
Miglena N. Koleva, Lubin G. Vulkov
doaj   +1 more source