Nanoparticles sorting and assembly based on double-axicon in an optofluidic chip

• Main Authors: Shi, Y. Z., Xiong, S., Chin, L. K., Ren, M., Liu, A. Q.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Microelectromechanical systems
• Online Access: https://hdl.handle.net/10356/103233; http://hdl.handle.net/10220/19988
• Institution: Nanyang Technological University

This paper presents a novel optofluidic system for nanoparticle sorting by using interference patterns generated through a double-axicon. The tightly confined Bessel beam is used to sort the 200-nm and 500-nm polystyrene nanoparticles massively and simultaneously by adjusting the flow rate and the laser power. Additionally, 2-μπι polystyrene particles are assembled into a 2D array by utilizing the discrete interference pattern. This system first utilizes the interference patterns based on the on-chip double-axicon, and integrates the sorting and assembly abilities into a single chip. It has a great potential in bacterial and DNA sorting and cell assembly.