Large-scale Size-selective Template Directed Assembly of Nanoparticle Arrays

| June 4, 2013

NSF Grant Number: EEC-0425826
PI(s): Ahmed Busnaina
Associate Research Scientist: Sivasubramanian Somu Student Researchers: Salome Siavoshi, Cihan Yilmaz, and Xugang Xiong
Institution: Northeastern University

Figure 1- (a) 1-m spaced array of 200nm and 50 nm PSL particles. (b) 1-m spaced array of 200nm and 50 nm PSL particles.

Figure 1- (a) 1-m spaced array of 200nm and 50 nm PSL particles. (b) 1-m spaced array of 200nm and 50 nm PSL particles.

Objective: The aim of this project is to selectively assemble nanoparticles of various sizes in predetermined sites on the same substrate.

Broader Impact: The different size particle allows different functionalization such as biomarkers to be selectively assembled (by size) in any nanoscale pattern that will make a very versatile and accurate multifunctional bionanosensor.

Significant Results: We have developed a fast, reproducible and high yield sequential template assisted electrophoretic directed assembly technique for generating size selective single nanoparticle arrays over large areas. Two different size PSL nanoparticles, 200nm/100nm, and 200nm/50nm have been size-selectively assembled on a PMMA patterned gold substrate over a large area.