13/10/2016
The motion of self-propelled tubular micro- and nano-jets have so far been achieved by bubble propulsion, e.g. O2 bubbles by catalytic decomposition of H2O2, which renders the future bio-medical applications inviable. Alternative self-propulsion mech-anism for tubular engines in the nano-meter scale is still missing. Here, we report the fabrication and characterization of a bubble-free propelled tubular nano-jets (as small as 220 nm in diameter), powered by enzyme triggered bio-catalytic reaction using urea as fuel. We studied the translational and rotational dynamics of the nano-jets depending on the length and location of the enzymes. Introducing tracer nanoparticles into the system, we demonstrat-ed the presence of an internal flow that extends into the external fluid via the cavity opening which leads to the self-propulsion. One-dimensional nano-size, longitudinal self-propulsion and biocompatibility, make the tubular nano-jets promising in future biomedical applications.
http://pubs.acs.org/doi/abs/10.1021/jacs.6b06857
Bubble Free Propulsion of Ultra-small Tubular Nano-jets Powered by Bio-catalytic ReactionsXing MaAna C. HortelaoAlbert Miguel-LópezSamuel SanchezJ. Am. Chem. Soc., Just Accepted ManuscriptDOI: 10.1021/jacs.6b06857Publication Date (Web): October 9, 2016Copyright © 2016 American Chemical SocietyAbstra...
