Splitting A Single Drop of Blood
Michelle Niu
York House School
Floor Location : M 214 D

I have been working with Dr. Bixia Ge, a research scientists at Simon Fraser University. We are working with the idea of the lotus effect and superhydrophobicity to determine how one droplet of blood can be used to test multiple cancer markers simultaneously. We have explored all the laws and principles necessary to achieve this by observing water droplets and their contact angles on different materials in labs. After learning about the factors that lead to superhydrophobicity and a high contact angle, such as surface material and surface structure, we began exploring how we could control the hydrophobicity of specific areas of different materials. The rationale behind this was so that we would be able to guide a single droplet of blood down multiple paths leading to different cancer markers. We dipped a piece of paper into a solution with 5mL of Hexane and 5 mL of 0.1% OTS. Then after drying it, we exposed only parts of the paper to UV light, covering the rest with aluminum foil. After this process, we were able to guide a single droplet of water down different paths simultaneously. This allows us to test a single droplet of blood with many cancer markers, all at the same time.