Electro-Static Trapping and Deposition of Nanoparticles in a Submicron Narrow Gap for a Lateral-Dlectrode LED

We have developed a patterning method of trapping and deposition of nanoparticles in a submicron narrow gap. We demonstrated a light emitting device which consists of nanoparticles trapped in the gap of lateral electrodes. The nanoparticles (CdSe/ZnS) in the solvent were electrostatically trapped as a dielectric material in the gap by lateral electric field. As the solvent was evaporating, the nanoparticles were deposited in the gap. Electroluminescence from the nanoparticles in the gap was observed when current was applied through the lateral electrodes.

References :
Koichi Yamada, Kazunori Hoshino, Kiyoshi Matsumoto, Isao Shimoyama, “Electro-Static Trapping and Deposition of Nanoparticles in a Submicron Narrow Gap for a Lateral-Electrode LED,” 17th IEEE International Conference on Micro Electro Mechanical Systems (MEMS '04), pp. 49-52, Maastricht, The Netherlands, Jan. 25-29, 2004. [Proceedings]

Kazunori Hoshino, Koichi Yamada, Kiyoshi Matsumoto, Isao Shimoyama, “Creating a Nano-Sized Light Source by Electrostatic Trapping of Nanoparticles in a Nanogap,” Journal of Micromechanics and Microengineering, vol. 16, no. 7, pp. 1285-1289, 2006. [Paper]