Abstract

We report a photothermal delivery of microscopic objects based on convection flows at the surface of water. The convection flows were induced by photothermal effect through a laser beam of $1.55\mathrm{\mu m}$ wavelength from a fiber tip. A $206\mathrm{\mu m}$ diameter oil drop was delivered forward and backward by changing the laser beam at a power of $28.5–40\mathrm{mW}$. In addition, the delivery has been further demonstrated with a cluster of carbon and red blood cells at the laser powers of 14 and $20\mathrm{mW}$, respectively.

© 2011 Optical Society of America

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