AI Article Synopsis
- Energy harvesting from noise utilizes stochastic resonance theory, demonstrating that hydrogen (H2) molecules can oscillate a larger mechanical resonator.
- The motion of H2 is triggered by tunneling electrons, resulting in fluctuating forces detected by a noncontact atomic force microscope tip.
- This coupling between molecular noise and the tip's oscillation can lead to self-oscillation, potentially improving energy transfer from incoherent sources to a molecular engine.
Article Abstract
Energy harvesting from noise is a paradigm proposed by the theory of stochastic resonances. We demonstrate that the random switching of a hydrogen (H(2)) molecule can drive the oscillation of a macroscopic mechanical resonator. The H(2) motion was activated by tunneling electrons and caused fluctuations of the forces sensed by the tip of a noncontact atomic force microscope. The stochastic molecular noise and the periodic oscillation of the tip were coupled in a concerted dynamic that drives the system into self-oscillation. This phenomenon could be a way for enhancing the transfer of energy from incoherent sources into coherent dynamics of a molecular engine.
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| http://dx.doi.org/10.1126/science.1227621 | DOI Listing |
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