Abstract
Holographic optical tweezers were used to show the interaction between a strongly focused laser beam and magnetic nanoparticles in ferrofluid. When the light intensity was high enough, magnetic nanoparticles were removed from the beam center and formed a dark ring. The same behavior was observed when focusing vortex or Bessel beams. The interactions between two or more separated rings of magnetic nanoparticles created by independent optical traps were also observed.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Xianping Wang, Cheng Yin, Jingjing Sun, Qingbang Han, Honggen Li, Minghuang Sang, Wen Yuan, and Zhuangqi Cao
Appl. Opt. 52(31) 7549-7553 (2013)
L. A. Shaw, Robert M. Panas, C. M. Spadaccini, and J. B. Hopkins
Opt. Lett. 42(15) 2862-2865 (2017)
Igor I. Smolyaninov, Bradley Yost, Evan Bates, and Vera N. Smolyaninova
Opt. Express 21(12) 14918-14925 (2013)