We oxidize Titanium wires to turn the dull gray surface to rainbow.
Full article: Engineerring
Materials:
| Item | Qty | Item | Qty | Item | Qty |
| Potential stat | 1 | Utility clamp | 2 | Graduated cylinder | 1 |
| bucket for clean water | 1 | extension cord | 1 | Ring stand | 2 |
| Bucket for electroplating | 1 | duct tape | 1 | electroplating rack | 1 |
| bucket for detergent | 1 | gloves (M/L) | 1 | Voltage Meter | 1 |
| Transparent Shield | 1 | detergent | 1 | Poster | 1 |
Demo Procedure: (estimation time: 10-12 min)
| # | Station | Action | Questions | Time |
| 1 | Invoke interests | Show | Expected results: colorful earrings | 1 min |
| 2 | Explain | What materials we use: Titanium
What make it colorful? |
1 min | |
| 3 | Demo | Explain | Why we need to clean before plating?
How much current and voltage we apply? Why we need to set up the shield? Why the bubbles happen on the Titanium wires? What reaction happens on the Titanium wires? Why we need to pull up slowly during the process? |
8 min |
| 4 | Wrap up | Show | The colorful Titanium wires | 2 min |
| Explain | General Q&A
How to make it into earrings? |
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| 5 | Finish | Hands-on | Put on the hook and bend the wires into shapes. | 3 min |
Work Assignment (5-6 people):
| Staff | Station | Work |
| 1 | Invoke interests | Show the kids earrings and explain |
| 2 | Demo | Switching on/off the potential stats & Explain |
| 3 | Demo | Operating the racks & Explain |
| 4 | Wrap up | Clean-up finished wires and help to bend the wires
Teach them how to put the earring on the hook General Q&A |
| 5 | Wrap up | |
| 6 | Helper | Photos / help other stations |
Past Events:
Outreach- “Enginearings” UW Discovery Days preparation in 2018
Outreach- “Enginearings” at UW Discovery Days in 2017
Outreach- Enumclaw STEM Expo “Enginearings” in 2017
