Figure 1.

Production of uniform agarose micro-gel capsules. (a) Experimental setup for generating agarose gelled particles. Agarose solution pinches into droplets in the microfluidic device. The droplets are collected in a glass vial placed in an ice bath to initiate the gelation of agarose (b) Schematic of the microfluidics device with flow focusing geometry producing agarose droplets. Agarose solution is introduced into the center channel and two streams of oil are flowed into two side channels. (c) Variation of droplet size with the flow rates of oil and aqueous phases (d) Droplet size distribution when oil flow rate was 30 μl∕h and aqueous flow rate was 20 μl∕h. Dotted line represents the Gaussian fit. Drop diameter is 82±2.9 μm (e) Micrograph of gelled agarose particles.