Colloids and self-assembly papers of Visscher group

• Y. Günal and P. B. Visscher, "Brownian Dynamics Simulation of Magnetic Colloid Aggregation", IEEE Transactions on Magnetics 32, 4049-4051, 1996. © 1996 IEEE.
• P. B. Visscher and Y. Günal, "Field-induced Smectic Ordering in Model Magnetic Inks", J. Appl. Phys. 81, 3827-3829, 1997.
• P. B. Visscher and Y. Günal, "Computer Simulation of Switching in Stoner-Wohlfarth Colloids", IEEE Transactions on Magnetics, 33, 3070, 1997, © 1997 IEEE.
• P. B. Visscher and Y. Günal, "Self-Assembly in Model Magnetic Inks", IEEE Transactions on Magnetics 34, 1687, 1998. © 1998 IEEE.
• M. Benakli, P. B. Visscher, Byeong S. Chae, and A. M. Lane, "Probing Microstructure of Magnetic Dispersions via Transverse Susceptibility: Experiment vs Simulation", Journal of Applied Physics, v. 87, 5657-5659, 2000.
• P. B. Visscher and Xiaoguang Deng, "Simulation of Self-Assembly of Superparamagnetic Particles", in preparation.

Movies related to colloids and self-assembly

• Self-assembly of superparamagnetic FePt particles (selected clips from a longer movie).
  • initial sedimentation under constant force, side view, 1.3 MB. The red vector is magnetization, blue is local field.
  • End of sedimentation, most particles in first layer. Camera rises to show lack of order, 4.7 MB. M and H are labeled here.
  • Not shown: second-layer particles drop one by one into first layer as it becomes more ordered.
  • First layer nearly complete -- watch the second-from-left particle in the second layer descend to the first, then camera rises to show near-perfect hexagonal order. 6.8 MB.
  • For comparison, a transmission electron micrograph of an actual self-assembled layer of FeCoPt particles (courtesy M. Chen and D. Nikles, U. of Alabama)