Nanoscale Control of Wetting Experiment - Student

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* 1. Please identify the school at which you performed the Superhydrophobic Surfaces laboratory:

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* 2. In what grade are you currently enrolled?

8th grade or younger

9th

10th

11th

12th

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* 3. After performing this hands-on activity, please rate how well you understand the following concepts:

	Not at all	A little	Mostly	Very
Material properties, such as hydrophobicity and hydrophilicity, can be adjusted precisely through chemical or physical (e.g. size) modifications.	Material properties, such as hydrophobicity and hydrophilicity, can be adjusted precisely through chemical or physical (e.g. size) modifications. Not at all	Material properties, such as hydrophobicity and hydrophilicity, can be adjusted precisely through chemical or physical (e.g. size) modifications. A little	Material properties, such as hydrophobicity and hydrophilicity, can be adjusted precisely through chemical or physical (e.g. size) modifications. Mostly	Material properties, such as hydrophobicity and hydrophilicity, can be adjusted precisely through chemical or physical (e.g. size) modifications. Very
Changing even one molecular layer (nano-scale thickness) on the surface of a material can dramatically modify its interaction with water.	Changing even one molecular layer (nano-scale thickness) on the surface of a material can dramatically modify its interaction with water. Not at all	Changing even one molecular layer (nano-scale thickness) on the surface of a material can dramatically modify its interaction with water. A little	Changing even one molecular layer (nano-scale thickness) on the surface of a material can dramatically modify its interaction with water. Mostly	Changing even one molecular layer (nano-scale thickness) on the surface of a material can dramatically modify its interaction with water. Very
Special 3D nanostructure coatings on the surfaces, whether engineered or found in nature, is the source of the unique superhydrophobicity phenomenon.	Special 3D nanostructure coatings on the surfaces, whether engineered or found in nature, is the source of the unique superhydrophobicity phenomenon. Not at all	Special 3D nanostructure coatings on the surfaces, whether engineered or found in nature, is the source of the unique superhydrophobicity phenomenon. A little	Special 3D nanostructure coatings on the surfaces, whether engineered or found in nature, is the source of the unique superhydrophobicity phenomenon. Mostly	Special 3D nanostructure coatings on the surfaces, whether engineered or found in nature, is the source of the unique superhydrophobicity phenomenon. Very

Please offer your explanation to the following questions:

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* 4. One step in making your copper surface superhydrophobic involves depositing a single layer of silver nanoparticles on the copper surface. Nanoparticles weren’t provided in your kit. Explain how YOU made the nanoparticles (hint: providing the type of chemical reaction that occurred is acceptable).

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* 5. Would the superhydrophobic copper surface become more hydrophobic if thicker (more than nano-scale thickness) layers of silver are deposited? Why or why not?

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* 6. Describe one or more ways you can determine whether a surface is superhydrophobic or not.

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* 7. Commercial cargo ships transport heavy products across oceans. Imagine a cargo ship with a superhydrophobic surface that is immersed in water. Describe what the interface between this “superhydrophobic” ship’s surface and water might look like, and what benefits this might confer to the operation of this ship.

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* 8. Identify any concepts that you understood better after performing this activity:

None

Molecules

Hydrophobicity

Oxidation-reduction

Nanostructures

Other (please specify)

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* 9. On a scale from 1 to 4, where 1 means "not at all" and 4 means "very much", rate the following:

	1	2	3	4
Did you find the science you learned in this activity interesting?	Did you find the science you learned in this activity interesting? 1	Did you find the science you learned in this activity interesting? 2	Did you find the science you learned in this activity interesting? 3	Did you find the science you learned in this activity interesting? 4
Do you want to learn more about how to modify material properties?	Do you want to learn more about how to modify material properties? 1	Do you want to learn more about how to modify material properties? 2	Do you want to learn more about how to modify material properties? 3	Do you want to learn more about how to modify material properties? 4
How well can you explain superhydrophobicity to someone who doesn’t know (perhaps to a younger sibling)?	How well can you explain superhydrophobicity to someone who doesn’t know (perhaps to a younger sibling)? 1	How well can you explain superhydrophobicity to someone who doesn’t know (perhaps to a younger sibling)? 2	How well can you explain superhydrophobicity to someone who doesn’t know (perhaps to a younger sibling)? 3	How well can you explain superhydrophobicity to someone who doesn’t know (perhaps to a younger sibling)? 4