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Ultrasensitive hysteretic force sensing with parametric nonlinear oscillators.
Luca Papariello1, Oded Zilberberg1, Alexander Eichler1
1Department of Physics, ETH Zurich, 8093 Zürich, Switzerland.
Physical Review. E
|September 15, 2016
Summary
We developed a new method for detecting weak forces using nonlinear resonators. A unique double jump hysteresis allows for ultrasensitive force detection down to the attonewton range.
Area of Science:
- Physics
- Mechanical Engineering
- Nanotechnology
Background:
- Nonlinear resonators are sensitive to external forces.
- Parametric driving can alter resonator response.
- Detecting weak forces requires high sensitivity.
Purpose of the Study:
- To propose a method for linear detection of weak forces.
- To utilize parametrically driven nonlinear resonators for enhanced sensitivity.
- To explore the unique hysteresis behavior in such systems.
Main Methods:
- Investigating the response of nonlinear resonators to parametric drives and external forces.
- Analyzing the Duffing-like and novel double jump hysteresis.
- Exploring the relationship between external force amplitude and jump frequency.
Main Results:
- A standard single jump hysteresis is observed for weak parametric drives.
- A novel double jump hysteresis emerges with stronger drives.
- This double jump is dependent on the external force and its frequency shifts linearly with amplitude.
Conclusions:
- The double jump hysteresis enables ultrasensitive detection of weak forces.
- The method offers straightforward force detection in the attonewton range with nanomechanical resonators.
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