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In this paper, we study the stability of a simple model of a Hyperloop vehicle resulting from the interaction between electromagnetic and aeroelastic forces for both constant and periodically varying coefficients (i.e., parametric…

High-order harmonic generation (HHG) provides a broad spectral bandwidth for synthesizing attosecond pulses. However, in the current HHG schemes, only part of the harmonics can be phase-locked, which limits the ability to achieve shorter…

Optics · Physics 2024-06-18 ShiJun Wang , XuanYang Lai , XiaoJun Liu

Synthetic biology sets out to implement new functions in cells, and to develop a deeper understanding of biological design principles. In 2000, Elowitz and Leibler showed that by rational design of the reaction network, and using existing…

Biological Physics · Physics 2017-05-17 Joris Paijmans , David K Lubensky , Pieter Rein ten Wolde

Nonlinear effects in pulse propagation through a medium consisting of four-level double-$\Lambda$-type systems are studied theoretically. We apply three continous-wave driving fields and a pulsed probe field such that they form a closed…

Quantum Physics · Physics 2009-11-13 Robert Fleischhaker , Jörg Evers

We first report that, for planar nematic MBBA, the electroconvection threshold voltage has a nonmonotonic temperature dependence, with a well-defined minimum, and a slope of about 0.12 V/degree near room temperature. Motivated by this…

Soft Condensed Matter · Physics 2009-11-10 N. C. Giebink , E. R. Johnson , S. R. Saucedo , E. W. Miles , K. K. Vardanyan , D. R. Spiegel , C. C. Allen

The robustness to different sources of error of the scheme for non-adiabatic holonomic gates proposed in [New J. Phys. {\bf 14}, 103035 (2012)] is investigated. Open system effects as well as errors in the driving fields are considered. It…

The generation of ultrashort light pulses is essential for the advancement of attosecond science. Here, we show that attosecond pulses approaching the Fourier limit can be generated through optimized optical driving of tunneling particles…

Mesoscale and Nanoscale Physics · Physics 2024-02-19 Shohei Imai , Atsushi Ono

Negative and positive transcriptional feedback loops are present in natural and synthetic genetic oscillators. A single gene with negative transcriptional feedback needs a time delay and sufficiently strong nonlinearity in the transmission…

Molecular Networks · Quantitative Biology 2011-12-23 Jesús M. Miró-Bueno , Alfonso Rodríguez-Patón

The adiabatic growth of a central massive black hole could compress the surrounding dark matter halo, leading to a steeper profile of the dark matter halo. This phenomenon is called adiabatic compression. We investigate the adiabatic…

Astrophysics of Galaxies · Physics 2023-04-19 Hyungjin Kim , Alessandro Lenoci , Isak Stomberg , Xiao Xue

An excitable semiconductor micropillar laser with delayed optical feedback is able to regenerate pulses by the excitable response of the laser. It has been shown that almost any pulse sequence can, in principle, be excited and regenerated…

Dedicated systems are fundamental for neuroscience experimental protocols that require timing determinism and synchronous stimuli generation. We developed a data acquisition and stimuli generator system for neuroscience research, optimized…

Quantitative Methods · Quantitative Biology 2015-04-08 Paulo Matias , Rafael Tuma Guariento , Lirio Onofre Baptista de Almeida , Jan Frans Willem Slaets

The sinoatrial-node (SAN) is a complex heterogeneous tissue that generates a stable rhythm in healthy hearts, yet a general mechanistic explanation for when and how this tissue remains stable is lacking. Although computational and…

Cell Behavior · Quantitative Biology 2018-09-14 Cheng Ly , Seth H. Weinberg

An optical coherent control scheme has been proposed and theoretically investigated where an extreme ultraviolet single attosecond pulse (SAP) propagates through a dense helium gas dressed by a time-delayed femtosecond laser pulse. The…

Atomic Physics · Physics 2012-09-26 Wei-Chun Chu , C. D. Lin

A fast-wave pulse in a simple, cold, inhomogeneous MHD model plasma is constructed by Fourier superposition over frequency of harmonic waves that are singular at their respective Alfven resonances. The pulse partially reflects before…

Solar and Stellar Astrophysics · Physics 2010-11-17 C S Hanson , P S Cally

Ultrafast processes in matter can be captured and even controlled by using sequences of few-cycle optical pulses, which need to be well characterized, both in amplitude and phase. The same degree of control has not yet been achieved for…

In 2000, Elowitz and Leibler introduced the repressilator--a synthetic gene circuit with three genes that cyclically repress transcription of the next gene--as well as a corresponding mathematical model. Experimental data and model…

Molecular Networks · Quantitative Biology 2019-01-01 Jonathan Tyler , Anne Shiu , Jay Walton

Excitation of two identical species in a cluster by the absorption of two photons of the same energy is strongly suppressed since the excitation of one subunit blocks the excitation of the other one due to the binding Coulomb interaction.…

Atomic and Molecular Clusters · Physics 2013-01-11 Ph. V. Demekhin , K. Gokhberg , G. Jabbari , S. Kopelke , A. I. Kuleff , L. S. Cederbaum

Respiration is an essential involuntary function necessary for survival. This poses a challenge for the control of breathing. The preB\"otzinger complex (preB\"otC) is a heterogeneous neuronal network responsible for driving the inspiratory…

Neurons and Cognition · Quantitative Biology 2026-04-09 Sreshta Venkatakrishnan , Andrew K. Tryba , Alfredo J. Garcia , Yangyang Wang

We present a new release of the RELTRANS model to fit the complex cross-spectrum of accreting black holes as a function of energy. The model accounts for continuum lags and reverberation lags self-consistently in order to consider the…

Dynamically crosslinked semiflexible biopolymers such as the actin cytoskeleton govern the mechanical behavior of living cells. Semiflexible biopolymers nonlinearly stiffen in response to mechanical loads, whereas the crosslinker dynamics…

Soft Condensed Matter · Physics 2019-06-05 Yuval Mulla , F. C. MacKintosh , Gijsje H. Koenderink
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