Magneto-controlled illumination with opto-fluidics |
| |
Authors: | Serhiy Z Malynych Alexander Tokarev Stephen Hudson John Ballato Konstantin G Kornev |
| |
Institution: | a School of Materials Science and Engineering, 161 Sirrine Hall, Clemson University, Clemson, SC 29634, USA b Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, Clemson, SC 29634, USA c Department of Chemistry, 116 BRC, Clemson University, Clemson, SC 29634, USA |
| |
Abstract: | Imaging of micro- and nanofluidics is a challenge since the size of the channels is so small that the installment of additional optical and mechanical switches is very difficult. The size of the device and associated increase in viscous dissipation constitute another constraint. In response to these limitations, this work proposes and demonstrates the manipulation of light by adding a functional lens to control the light on demand. In the present work, this lens is realized by filling a hollow fiber with a colloid of superparamagnetic Fe3O4 nanoparticles. When the propagation of light is perpendicular to the magnetic field, this lens stretches the circular beam into a ribbon yielding a larger visible area. Potentially, one can apply a rotating magnetic field thus illuminating a larger spot size or creating other beam geometries. Such composite fibers might also be of value for Faraday isolation and other magneto-optic effects in optical fibers. |
| |
Keywords: | Iron oxide nanoparticle Ferrofluid Light scattering Optofluidic |
本文献已被 ScienceDirect 等数据库收录! |
|