1. Hele-Shaw Experimental Group Lucas Lamb Andrea Roeser Chen Shu

2. Set Up

3. Pour Glycerol or PEO Procedure:

4. Clamp the plastic plates

5. Note the wax paper background and ruler

6. Insert needle

7. Place mass onto syringe

8. Record the whole process

9. Our Set Up

10. Parameters Varied Volume of injected water remains constant (1.2 mL) Mass: 500 -> 1000 -> 1500 -> 2000 g Cell spacing: 0.32 -> 0.52 -> 0.83 mm Newtonian -> Non-Newtonian, then process repeated

11. date trial number number of spacers width of spacers (mm)Mass (g) volume inside syringe (mL)time (s) Flow Rate (mL/min) 3/25/2015130.325001.24.6 *15.7 * 3/25/2015230.3210001.23.2 *22.5 * 3/25/2015330.3215001.23.2 *22.5 * 3/25/2015430.3220001.22.1 *34.3 * 3/30/2015130.3220001.21.9 *37.9 * 3/30/2015230.3220001.22.2 *32.7 * 3/30/2015350.525001.25.1 *14.1 * 3/30/2015450.5210001.23 *24 * 3/30/2015550.5215001.22.2 *32.7 * 3/30/2015650.522001.28 *9 * 4/1/2015150.5215001.22 *36 * 4/1/2015250.5220001.21.8 *40 * 4/1/2015350.522001.213.3 *5.4 * 5/4/2015180.835001.2514.4 5/4/2015280.8310001.22.430 5/4/2015380.8315001.21.742.4 Newtonian Trials

12. date trial number number of spacers width of spacers (mm )Mass (g) volume inside syringe (mL) time (s) * Flow Rate * (mL/min) 4/1/2015530.3210001.22.430 4/6/2015130.325001.22.924.8 4/6/2015230.322501.2612 4/6/2015330.327501.22.528.8 4/6/2015430.321251.214.84.9 4/6/2015530.322501.26.311.4 4/6/2015650.525001.23.520.6 4/13/2015150.522501.224.82.9 4/13/2015250.521251.218.43.9 4/13/2015350.527501.23.123.2 4/13/2015450.522501.27.49.7 4/13/2015580.831251.220.23.6 4/20/20151 8 0.832501.2107.2 4/20/20152 8 0.835001.24.815 4/20/20153 8 0.837501.22.825.7 Non-Newtonian Trials

13. Experimental [Trial and] Error Placing mass on syringe – slides off Air bubbles – in syringe or in cell Glycerol or PEO clog needle Possible tilt to cell – water leaks to one side Clamping of syringe – unnecessary forces Flow rates! iPhone’s slow motion affected video timing

14. Analysis- Varied Mass Newtonian Fluid (glycerol) Cell Spacing 0.52mm Mass (L to R): 200g, 500g, 1000g, 1500g

15. Analysis- Varied Spacing Newtonian Fluid (glycerol) Mass: 500 g Cell Spacing (L to R): 0.32mm, 0.52mm, 0.83mm

16. Analysis- Varied Spacing Newtonian Fluid (glycerol) Mass: 1000 g Cell Spacing (L to R): 0.32mm, 0.52mm, 0.83mm

17. Analysis- Varied Mass Non-Newtonian Fluid (PEO) Cell Spacing: 0.52mm Mass (L to R): 125g, 250g, 500g, 750g

18. Analysis- Varied Spacing Non-Newtonian Fluid (PEO) Mass: 500 g Cell Spacing: 0.32mm (left), 0.52mm (middle), 0.83mm (right)

19. THE END Thank you Michael Lam