Ultrafast photomechanical transduction through thermophoretic implosion - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nature Communications Année : 2020

Ultrafast photomechanical transduction through thermophoretic implosion

Nikita Kavokine
Shuangyang Zou
  • Fonction : Auteur
Ruibin Liu
  • Fonction : Auteur
Antoine Niguès
  • Fonction : Auteur
  • PersonId : 1312470
Bingsuo Zou
  • Fonction : Auteur
Lydéric Bocquet

Résumé

Since the historical experiments of Crookes, the direct manipulation of matter by light has been both a challenge and a source of scientific debate. Here we show that laser illumination allows to displace a vial of nanoparticle solution over centimetre-scale distances. Cantilever-based force measurements show that the movement is due to millisecond-long force spikes, which are synchronised with a sound emission. We observe that the nanoparticles undergo negative thermophoresis, and ultrafast imaging reveals that the force spikes are followed by the explosive growth of a bubble in the solution. We propose a mechanism accounting for the propulsion based on a thermophoretic instability of the nanoparticle cloud, analogous to the Jeans's instability that occurs in gravitational systems. Our experiments demonstrate a new type of laser propulsion and a remarkably violent actuation of soft matter, reminiscent of the strategy used by certain plants to propel their spores.
Fichier principal
Vignette du fichier
Nature-Com-Kavokine-2020.pdf (2.3 Mo) Télécharger le fichier
Origine : Publication financée par une institution
Loading...

Dates et versions

hal-02998855 , version 1 (10-11-2020)

Licence

Paternité

Identifiants

Citer

Nikita Kavokine, Shuangyang Zou, Ruibin Liu, Antoine Niguès, Bingsuo Zou, et al.. Ultrafast photomechanical transduction through thermophoretic implosion. Nature Communications, 2020, 11 (1), ⟨10.1038/s41467-019-13912-w⟩. ⟨hal-02998855⟩
13 Consultations
29 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More