Results 91 to 100 of about 10,848 (254)
Oscillation Theory and Instability Of Nonlinear Waves
Discrete and Continuous Dynamical Systems, 2023 In recent work, Baird et al. have introduced a generalized Maslov index which allows oscillation techniques that have previously been restricted to eigenvalue problems with underlying Hamiltonian structure to be extended to the non-Hamiltonian setting [T. J. Baird, P. Cornwell, G. Cox, C. Jones, and R.
openaire +2 more sources
Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine
Advanced Materials, EarlyView.A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen +5 more
wiley +1 more source
Oscillation Theory of Linear Systems
Journal of Differential Equations, 2002 The author considers a strongly continuous semigroup \(T\) with generator \(A\) in a real Banach space \(X\). It is shown that if the spectrum of the generator \(A\) of semigroup \(T\) has no nonnegative real values then almost all points in \(X\) strongly oscillate.
openaire +2 more sources
Recent advances in coupled oscillator theory
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2019 We review the theory of weakly coupled oscillators for smooth systems. We then examine situations where application of the standard theory falls short and illustrate how it can be extended. Specific examples are given to non-smooth systems with applications to the Izhikevich neuron.
Bard Ermentrout +2 more
openaire +4 more sources
Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
Advanced Materials, EarlyView.Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens +8 more
wiley +1 more source
Oscillation of third order functional differential equations with delay
Electronic Journal of Differential Equations, 2003 We consider third order functional differential equations with discrete and continuous delay. We then develop several theorems related to the oscillatory behavior of these differential equations.
Tuncay Candan, Rajbir S. Dahiya
doaj
Lie-transform derivation of oscillation-center quasilinear theory
Fundamental Plasma PhysicsThe derivation of the oscillation-center quasilinear theory in an unmagnetized plasma by Dewar (1973) is rederived by Lie-transform perturbation method.
Alain J. Brizard
doaj +1 more source
Resolving the Structural Duality of Graphene Grain Boundaries
Advanced Materials, EarlyView.Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo +11 more
wiley +1 more source
An Application of Gesztesy–Simon–Teschl Oscillation Theory to a Problem in Differential Geometry
, 2001 The approach to oscillation theory developed by Gesztesy, Simon, and Teschl produces a sharp version for the oscillation theorem for singular Sturm–Liouville operators.
Karl Michael Schmidt +1 more
core +1 more source
Self‐Cooling Molecular Spin Qudits
Advanced Materials, EarlyView.A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios +12 more
wiley +1 more source