 we report on the 
 synergy between catalytic propulsion and mesoporous 
 silica nanoparticles ( msnps ) for the design of janus nanomotors as 
 active cargo delivery systems with sizes < 100 nm ( 40 , 65 , and 90 
 nm ) . 
 the janus asymmetry of the nanomotors is given by electron beam 
 ( e - beam ) deposition of a very thin platinum ( 2 nm ) layer on msnps . 
 
 the chemically powered janus nanomotors present active diffusion at 
 low h2o2 fuel concentration ( i.e. , <3 wt 
 % ) . 
 their apparent diffusion coefficient is enhanced up to 100% compared 
 to their brownian motion . due to their mesoporous architecture and 
 small dimensions 
 , they can load cargo molecules in large quantity 
 and serve as active nanocarriers for directed cargo delivery on a 
 chip . 
Supplementary Material