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The Smallies Dream Big presenting High Tech Micro Channels

The Smallies Dream Big presenting High Tech Micro Channels. Catherine Lu Rianne Bowser Stephanie Montalvan June 14, 2011. Orientation. Outline. Objectives Introduction Statement of Problem Analysis Results Conclusion References Thank you. Objectives.

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The Smallies Dream Big presenting High Tech Micro Channels

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  1. The Smallies Dream BigpresentingHigh Tech Micro Channels Catherine LuRianne BowserStephanie MontalvanJune 14, 2011

  2. Orientation

  3. Outline • Objectives • Introduction • Statement of Problem • Analysis • Results • Conclusion • References • Thank you

  4. Objectives • Measure amount of pH of various chemicals using microfluidic channels • Help minimize the amount of waste produced when experimenting Microfluidic Channel

  5. Introduction • A microfluidic channel is less than 1mm, its small volume helps reduce the amount of waste while experimenting. • Polydimethylsiloxane (PDMS) is a silicone based polymer which is a long chain of molecules. • Motivation • Our motivation is to scale down the amount of waste as much as possible to help reduce the amount of waste. • This helps scientists and engineers because it reduces sample sizes.

  6. Statement of Problem • Problem • To find the pH levels of certain liquids by using the least amount of chemicals as possible, so we can conserve fluids. • Limitations • We didn’t have: • Desiccators- machine that creates a vacuum • Hot Plates- quicken the process • Restriction • the machines necessary to make small micro channels (instead we created larger scale models)

  7. Analysis • The way we made the microchannel was by gluing cotton swabs on the bottom of a Petri dish, which made a mold for the polymer • The way we performed this experiment was by inserting the different chemicals in the microchannel • We then added the pH indicator which gave us the results • The four chemicals we used were dishwasher soap, bleach (Sodium hypochloride), Listerine, and vinegar • The two liquids flowed together and mixed showing the pH level

  8. Results The pH of vinegar was 3.0 which is mostly acidic. The Listerine was 4.0 which is also pretty acidic. The next was dishwasher soap and the pH was 8.0 and that is basic. Sodium hypochlorite or household bleach has a pH of 10 which is really basic. • pH of Experimented Fluids:

  9. Conclusion • We used small amounts of the fluid to find the pH • This relates to the real world because bioengineers may have to find the pH of your bodily fluids • We can improve our results by actually getting the equipment, making the real thing instead of a bigger scaled model • -This will clarify the results and make them scientifically precise, that way we won’t be confused and mistake it for a color it is not • If you mistake the color, the pH will come out incorrect • If it was the real world, then it could conclude to faulty diagnoses.

  10. References Makamba, Honest, Jin Ho Kim, Kwanseop Lin, Nokyoung Park, and JongHoon Hahn. "Surface Modification of Poly(dimethylsiloxane) Microchannels - Makamba - 2003 - ELECTROPHORESIS." Wiley Online Library. John Wiley & Sons, Inc., 6 Nov. 2003. Web. 16 June 2011. Kawaji, Masahiro. "Two-Phase Flow in Microchannels." CSA Illumina. Proquest, July 2004. Web. 16 June 2011.

  11. Thank You

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