Natural convection induced by an optically fabricated and actuated microtool with a thermoplasmonic disk

Engay, Einstom; Bunea, Ada-Ioana; Chouliara, Manto; Banas, Andrew; Gluckstad, Jesper

Angol nyelvű Tudományos Szakcikk (Folyóiratcikk)
Megjelent: OPTICS LETTERS 0146-9592 1539-4794 43 (16) pp. 3870-3873 2018
  • SJR Scopus - Atomic and Molecular Physics, and Optics: D1
    Two-photon polymerization was employed for fabricating microtools amenable to optical trapping and manipulation. A disk feature was included as part of the microtools and further functionalized by electron-beam deposition. The nanostructured gold layer on the disk facilitates off-resonant plasmonic heating upon illumination with a laser beam. As a consequence, natural convection characterized by the typical toroidal shape resembling that of Rayleigh-Benard flow can be observed. A velocity of several mu m . s(-1) is measured for 2 mu m microspheres dispersed in the surroundings of the microtool. To the best of our knowledge, this is the first time that thermoplasmonic-induced natural convection is experimentally demonstrated using a mobile heat source. (C) 2018 Optical Society of America
    Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
    2020-08-05 13:39