author={Alejandro Jenkins},

Undamped transverse oscillations of coronal loops as a self-oscillatory process

Context. Standing transverse oscillations of coronal loops are observed to operate in two regimes, the rapidly decaying large amplitude oscillations, and undamped small amplitude oscillations. In the

Stochastic thermodynamics of self-oscillations: the electron shuttle

Self-oscillation is a phenomenon studied across many scientific disciplines, including the engineering of efficient heat engines and electric generators. We investigate the single electron shuttle, a

Chandler wobble: Stochastic and deterministic dynamics

We propose a model of the Earth’s torqueless precession, the “Chandler wobble,” as a self-oscillation driven by positive feedback between the wobble and the centrifugal deformation of the portion of

Generating Transverse Loop Oscillations through a Steady-flow Driver

In recent years, the decay-less regime of standing transverse oscillations in coronal loops has been the topic of many observational and numerical studies, focusing on their physical characteristics,

Irreversibility of mechanical and hydrodynamic instabilities

The literature on dynamical systems has, for the most part, considered self-oscillators (i.e., systems capable of generating and maintaining a periodic motion at the expense of an external energy

Dynamic relaxation oscillations in a nonlinearly driven quartz crystal

We demonstrate thermo-mechanical relaxation oscillations in a strongly driven quartz crystal. Dynamic bifurcation leads to two stable oscillation states with a distinct electrical impedance. Slow

Synchronization of a Passive Oscillator and a Liquid Crystal Elastomer Self-Oscillator Powered by Steady Illumination

Self-oscillators have the advantages of actively harvesting energy from external steady environment, autonomy, and portability, and can be adopted as an engine to drive additional working equipment.

Selective High‐Frequency Mechanical Actuation Driven by the VO2 Electronic Instability

Relaxation oscillators consist of periodic variations of a physical quantity triggered by a static excitation. They are a typical consequence of nonlinear dynamics and can be observed in a variety of

Propulsion driven by self-oscillation via an electrohydrodynamic instability

Oscillations of flagella and cilia play an important role in biology, which motivates the idea of functional mimicry as part of bio-inspired applications. Nevertheless, it still remains challenging



Non-unilateral oscillations

Synchronization of pulse-coupled biological oscillators

A simple model for synchronous firing of biological oscillators based on Peskin's model of the cardiac pacemaker (Mathematical aspects of heart physiology, Courant Institute of Mathematical Sciences,

The Theory of Sound

THE second part of Lord Rayleigh's highly instructive work on acoustics contains the mechanics of oscillatory motions in liquids and gases. Atmospheric air is that medium by which by far the greater

Mode locking in quantum optics

Mode locking phenomena in acoustics and in laser physics are discussed and are shown to share a feature of the forced oscillator: Oscillation takes place at the forcing frequency (or frequencies).

Resonance, Tacoma Narrows bridge failure, and undergraduate physics textbooks

The dramatic Tacoma Narrows bridge disaster of 1940 is still very much in the public eye today. Notably, in many undergraduate physics texts the disaster is presented as an example of elementary

The Explanation of Certain Acoustical Phenomena

MUSICAL sounds have their origin in the vibrations of material systems. In many case, e.g. the pianoforte, the vibrations are free, and are then necessarily of short duration. In other cases, e.g.

Two-Stroke Oscillators

A four-stroke oscillator, whether symmetrical or moderately dissymmetrical, is one in which the linear, conservative elements receive energy from the source two times per period; such are typically a

Thermoacoustic instabilities in the Rijke tube: experiments and modeling

Thermoacoustic instability can appear in thermal devices when unsteady heat release is coupled with pressure perturbations. This effect results in excitation of eigen acoustic modes of the system.

Laplace and the Speed of Sound

OR A CENTURY and a quarter after Isaac Newton initially posed the problem in the Principia, there was a very apparent discrepancy of almost 20 per cent between theoretical and experimental values of

Impulses and Physiological States in Theoretical Models of Nerve Membrane.