129 citations · 270 across the 12 of their papers we have counts for
4 papers · 1 filter
Limit cycles and bifurcations in a nonlinear MEMS oscillator with a 1:3 internal resonance. Part I: The case of a driven resonator
S. Houri, D. Hatanaka, M. Asano +2
This work investigates the behavior of an AlGaAs/GaAs piezoelectric nonlinear MEMS oscillator exhibiting a 1:3 internal resonance. The device is explored in an open-loop configurat…
Pulse-width modulated oscillations in a nonlinear resonator under two-tone driving as a means for MEMS sensor readout
Samer Houri, Ryuichi Ohta, Motoki Asano +2
A MEMS Duffing resonator is driven by two adjacent frequency tones into the nonlinear regime. We show that if the two-tone drive is applied at a frequency where a bistable response…
An opto-electro-mechanical system based on evanescently-coupled optical microbottle and electromechanical resonator
Motoki Asano, Ryuichi Ohta, Takashi Yamamoto +2
Evanescent coupling between a silica optical microbottle resonator and a GaAs electromechanical resonator is demonstrated. This coupling provides high optical sensitivity and effic…
Coherent coupling of dark and bright excitons with vibrational strain
Ryuichi Ohta, Hajime Okamoto, Takehiko Tawara +2
In many physical systems, there are specific electronic states called dark state that are protected from the rapid radiative decay imposed by the system symmetry. Although their lo…