Results 51 to 60 of about 17,787 (238)

Oscillation criteria for a linear neutral differential equation

, 2003
For a neutral differential equation ẋ(t)−a(t)ẋg(t)+b(t)xh(t)=0,0⩽a(t)
Braverman, Elena, Berezansky, Leonid
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Oscillation criteria of second order nonlinear neutral differential equations with damping terms(具阻尼项的二阶非线性中立型微分方程的振动准则)

Zhejiang Daxue xuebao. Lixue ban
The purpose of this paper is to establish some new oscillation criteria for the second-order nonlinear neutral differential equations with damping terms which have the form [a(t)z'(t)α-1z'(t)]'+b(t)z'(t)α-1z'(t)+q(t)x(σ(t))β-1x(σ(t))=0， where z(t)=x(t)+p(
曾云辉(ZENG Yunhui), 孙文杰(SUN Wenjie), 罗李平(LUO Liping), 俞元洪(YU Yuanhong)   +3 more
doaj   +1 more source

Oscillation of solutions to second-order half-linear differential equations with neutral terms

Electronic Journal of Differential Equations, 2013
Summary: We are concerned with the oscillation of the second-order neutral differential equation \[ (r(t)|z'(t)|^{\alpha-1} z'(t))'+ q(t)|x(\sigma(t))|^{\alpha-1} x(\sigma(t))= 0, \] where \(z(t):= x(t)+ \sum^m_{i=1} p_i(t) x(\tau_i(t))\), and (H1) \(m> 1\) is an integer, \(q\in C[t_0,\infty)\), \(r,p_i,\tau_i,\sigma\in C^1[t_0, \infty)\); (H2 ...
ZHANG, Chenghui, LI, Tongxing, ŞENEL, Mehmet Tamer   +2 more
openaire   +3 more sources

Resolving the Cu(bdc) Conundrum: Identifying Non‐Porous Packing of Prototypical Coordination‐Network Thin Films Combining Advanced Diffraction Techniques and Computational Modelling

Advanced Functional Materials, EarlyView.
Solution‐processed Cu(bdc) forms prototypical MOF thin films for which a multitude of not fully satisfactory structural models have been suggested. Combining rotating grazing‐incidence diffraction and X‐ray reflectivity on two complementary samples with density‐functional theory, we first discard the previously suggested models and then identify a non ...
Narges Taghizade, Mario Fratschko, Robbin Steentjes, Mercedes Linares‐Moreau, Paolo Falcaro, Christof Wöll, Roland Resel, Egbert Zojer   +7 more
wiley   +1 more source

Tailoring Li‐ion Storage and Transport in Two‐Dimensional Conjugated Metal‐Organic Frameworks via Precise Nitrogen Incorporation

Advanced Functional Materials, EarlyView.
Two nitrogen‐doped 2D conjugated metal‐organic frameworks (2D c‐MOFs, namely Cu‐Nx‐OHBA, x = 2 or 4) are synthesized, featuring precise nitrogen incorporation via rational ligand design. The Cu‐Nx‐OHBA 2D c‐MOFs are largely tailorable by varying skeletal nitrogen density, with respect to electrical conductivity, Li‐storage capacitance, and Li‐transport
Xiangyu Li, Shaoze Shi, Fucai Cui, Rashid Iqbal, Pengyu Wang, Tianrui Wu, Jingcheng Hao, Renhao Dong   +7 more
wiley   +1 more source

Homoclinic snaking in a neutral delay model of a transmission line oscillator

, 2006
In a transmission line oscillator (TLO) a linear wave travels along a piece of cable, the transmission line, and interacts with terminating electrical components.
Wilson, RE, Barton, DAW, Krauskopf, B
core  

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

Advanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota, Yuya Nakata, Erika Katayama, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, Atsushi Shishido   +6 more
wiley   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf, Hiba Shahulhameed, Bhabani Sankar Swain, Shengzhong (Frank) Liu, Adel Najar   +4 more
wiley   +1 more source

Oscillation of solutions to third-order half-linear neutral differential equations

Electronic Journal of Differential Equations, 2012
Summary: We study the oscillation of solutions to the third order neutral differential equations \[ \left(a(t)([x(t)\pm p(t)x(\delta(t))]'')^\alpha\right)' + q(t)x^\alpha(\tau(t))=0. \] Sufficient conditions are established so that every solution is either oscillatory or converges to zero.
Jozef Dzurina, Ethiraju Thandapani, Sivaraj Tamilvanan   +2 more
openaire   +2 more sources