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Nano2Earth

Nano2Earth. Introducing Nanotechnology through Investigations of Groundwater. A Curriculum for Secondary Biology, Chemistry, and Earth and Environmental Science Teachers. Nano2Earth. An NSF research grant “Broader Impacts” effort. Vital statistics for Nano2Earth :

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Nano2Earth

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  1. Nano2Earth Introducing Nanotechnology through Investigations of Groundwater A Curriculum for Secondary Biology, Chemistry, and Earth and Environmental Science Teachers

  2. Nano2Earth An NSF research grant “Broader Impacts” effort • Vital statistics for Nano2Earth: • $200K investment (within $1M program) • Four years to develop and test • Awaiting commercial publication

  3. Nano2Earth It took “a cast of thousands . . .” • 6 professors • 7 HS teachers!! • 8 grad students • 3 staff members So who developed and wrote Nano2Earth??

  4. Nano2Earth What are Nanoscience and Nanotechnology? Chapter 1

  5. NanoGeoscience and Technology Laboratory • How will the Earth and environmental sciences respond?

  6. NanoGeoscience and Technology Laboratory

  7. Nanoscience in everyday life

  8. Alivisatos (1996) Science. Quantum dots CdS/CdSe 5 nm

  9. Nano2Earth Historical and Societal Aspects of Nanoscale Science and Technology Chapter 2

  10. The Lycurgus Cup

  11. There’s Plenty of Room at the Bottom

  12. 20 15 Life Sciences U.S. Budget (billions of $) 10 5 Physical Sciences 0 1970 1980 1990 2000 Year Source: NSF

  13. Nano2Earth The Link Between Nanoscale Science, Technology, and a Vital Environmental Issue: Groundwater Pollution Chapter 3

  14. The Scanning Tunneling Microscope Oxidized patches 8 Fe 6 4 Pyrite (100) 2.5 2 nm

  15. The Scale of the Earth Sciences Nano NanoGeoscience and Technology Laboratory

  16. Nano2Earth Nanotechnology and the National Science Education Standards Chapter 4

  17. Nano2Earth Nano2Earth Curriculum Overview Chapter 5

  18. Microbes, Minerals, and Water http://who.org http://www.kinetico.com/residntl/proddrnk.htm http://ens-news.com/ens/mar2003/2003-03-17-01.asp

  19. Nano2Earth • Introduction to nanotechnology • Introduction to groundwater pollution • Microbe-mineral interactions • Investigations of bacterial transport • Nanoforces in nature

  20. Lesson 1: Introduction to Nanotechnology

  21. The Scale of the Earth Sciences Nano NanoGeoscience and Technology Laboratory

  22. Introduction to Nanotechnology Scaling Activity Answer Key

  23. Lesson 2: Introduction to Water Pollution

  24. Water Pollution Webquest Activity

  25. Lesson 3:Microbe- Mineral Interactions:Using the Winogradsky Column to Demonstrate the Microbial Reduction of Iron3+

  26. Purpose of the activity The ecosystem will be used to • Observe general visual changes that take place in the column • Simulate eutrophication • Observe effects of excess nutrients on the system and dissolved oxygen concentration • Measure and follow changes in DO concentrations • Relate changes in DO to water quality and microbial activity • Observe changes in Fe3+ to Fe2+ when the column becomes anaerobic • Relate mineral-microbial activity to water quality • Connect nanotechnology to high school sciences

  27. ProcedureDay 1 1.Build column using plastic bottles, creek mud and water. 2. Measure the DO concentration. 3. Add sugar (+ nutrients) to the column. 4. Place column in indirect light or under grow lamp.

  28. Day 2 1. Observe changes in the appearance of the column. 2. Measure the DO concentration. 3. Add pea sized amount of iron (III) chloride to the column. 4. Replace column in indirect light location.

  29. Following Days • Continue to make observations • Continue to measure DO concentrations What changes will take place in the column? • DO concentration drops dramatically (Column becomes anaerobic.) • Water color changes from brownish to red/orange back to brownish (Fe3+ -> Fe2+) in column.

  30. Examples of student results

  31. Lesson 4: Investigation of Bacterial Transport in Groundwater

  32. Introduction to Bacterial Transport • Pathogenic microorganism is a leading cause of death in the world • 10 million people die every year from waterborne diseases, such as Salmonella, Cholera, and E. Coli. • One out of every six people lives without regular access to safe drinking water

  33. Scenario

  34. Column Experiments

  35. Why does pH matter?

  36. solution mineral 5. Nanoforces in Nature: Using Atomic Force Microscopy to Explore Mineral-Microbe Interactions

  37. Atomic Force Microscopy laser photodiode detector computer cantilever x,y,z piezo

  38. B) A) C) Cantilever D) F) E) Sample Top of Scanner G)

  39. Build an AFM in your classroom

  40. solution mineral Biological Force Microscopy Images by Steven Lower

  41. bead with bacteria covering it cantilever mineral

  42. Evaluation scenarios

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