Demonstration of a Concentration Gradient Generator (image) Harvard University Share Print E-Mail Caption To demonstrate this concentration gradient generator, created in the lab at SEAS, two dyes are injected at the top, and they travel through a maze of tiny channels. The configuration of the channels, the flow rate of the dyes, and the material properties of the chip all affect the amount of mixing that can take place. At the end of the maze, a predictable concentration gradient is produced. Credit Eliza Grinnell, Harvard School of Engineering and Applied Sciences Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.