Strong negative nonlinear friction from induced two-phonon processes in vibrational systems
oleh: X. Dong, M. I. Dykman, H. B. Chan
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2018-08-01 |
Deskripsi
Negative linear friction is known to lead to self-sustained vibrations in many systems. Here, the authors show that when nonlinear negative friction in an electromechanical oscillator becomes larger than its positive linear counterpart such self-sustained vibrations require activation.