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- M Borromeo, G Costantini, F Marchesoni
- Physical review. E, Statistical, nonlinear, and…
- 2002

The rectification efficiency of an underdamped ratchet operated in the adiabatic regime increases according to a scaling current-amplitude curve as the damping constant approaches a critical threshold; below threshold the rectified signal becomes extremely irregular and eventually its time average drops to zero. Periodic (locked) and diffusive (fully… (More)

- M Borromeo, S Giusepponi, F Marchesoni
- Physical review. E, Statistical, nonlinear, and…
- 2006

The one-dimensional motion of a massless Brownian particle on a symmetric periodic substrate can be rectified by reinjecting its driving noise through a realistic recycling procedure. If the recycled noise is multiplicatively coupled to the substrate, the ensuing feedback system works like a passive Maxwell's daemon, capable of inducing a net current that… (More)

- M Borromeo, F Marchesoni
- Physical review. E, Statistical, nonlinear, and…
- 2010

In a recent experiment [Müller, Phys. Rev. A 79, 031804(R) (2009)] reported a splitting of the stochastic resonance peak, which they attributed to the asymmetry of an effective double-well restoring potential in their optomechanical read-out device. We show here that such an effect, though smaller than reported, is indeed consistent with a characterization… (More)

- M Borromeo, F Marchesoni
- Chaos
- 2005

The rectification of a massive Brownian particle moving on a periodic substrate can be achieved in the absence of spatial asymmetry, by having recourse to (at least) two periodic, zero-mean input signals. We determine the relevant drift current under diverse operation conditions, namely, additive and multiplicative couplings, adiabatic and fast oscillating… (More)

- M L Santiago, E G Santiago, +12 authors B L Ramirez
- Journal of acquired immune deficiency syndromes…
- 1998

The molecular epidemiology of HIV-1 infection in the Philippines from 1985 to 1997 was investigated following subtyping of 54 (33 women, 21 men) prospectively collected clinical specimens using the heteroduplex mobility assay (HMA). In contrast with other Asian countries, subtype B accounted for most (70%) of the infections in the population studied, among… (More)

- Marcello Borromeo, Fabio Marchesoni
- Physical review. E, Statistical, nonlinear, and…
- 2007

The nonequilibrium escape dynamics in a bistable system under the influence of two Gaussian noises, one obtained by recycling, the other with a constant delay time, is shown by numerical simulation to exhibit stochastic synchronization; i.e., under stationary conditions, an appreciable fraction of renewal trajectories gets locked to the noise-recycling… (More)

- G Costantini, F Marchesoni, M Borromeo
- Physical review. E, Statistical, nonlinear, and…
- 2002

We simulated numerically the time evolution of a one-kink bearing, damped elastic string sitting on noiseless periodic substrates of two types: (I) asymmetric, time independent, (II) symmetric, periodically deformable. An asymmetric kink subjected to an ac drive is shown to drift steadily with finite average speed independent of its initial kinetic… (More)

- M Borromeo, F Marchesoni, P K Ghosh
- The Journal of chemical physics
- 2011

In eccentric septate channels the pores connecting adjacent compartments are shifted off-axis, either periodically or randomly, so that straight trajectories parallel to the axis are not allowed. Driven transport of a Brownian particle in such a channel is characterized by a strong suppression of the current and its dispersion. For large driving forces,… (More)

- M Borromeo, F Marchesoni
- Physical review. E, Statistical, nonlinear, and…
- 2006

Transport in one-dimensional symmetric devices can be activated by the combination of thermal noise and a biharmonic drive. For the study case of an overdamped Brownian particle diffusing on a periodic one-dimensional substrate, we distinguish two apparently different biharmonic regimes: (i) Harmonic mixing, where the two drive frequencies are commensurate… (More)

- Marcello Borromeo, Fabio Marchesoni
- Physical review letters
- 2007

Brownian motion on a symmetric vibrated periodic substrate is shown to be extremely sensitive to the particle mass even in the regime of large damping. This phenomenon is the most apparent for high vibration frequencies, a condition of technological interest, which is investigated here both analytically and numerically. When plotted versus the damping… (More)