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Smart Materials and Nano Materials Lecture

16 Questions

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Smart Materials and Nano Materials Lecture

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Questions and Answers

What is the size range that nanotechnology generally deals with?

1 meter or smaller

100 nanometers or smaller (correct)

100 micrometers or smaller

100 millimeters or smaller

What is the equivalent of a nanometer in millimeters?

1/10 mm

1/100 mm

1/1,000,000 mm (correct)

1/1,000 mm

What is the diameter of the human hair in nanometers?

800,000 nm

800 nm

80,000 nm (correct)

8,000 nm

When did the development of nanotechnology and nanoscience start?

Early 1980s Signup and view all the answers

What are one-dimensional Nanomaterials used for?

Electronic device manufacture Signup and view all the answers

What was discovered in 1985 leading to the development of nanotechnology?

Fullerenes Signup and view all the answers

What are the properties of carbon nanotubes (CNTs) as mentioned in the text?

Very strong, flexible around their axis, and excellent conductor of electricity Signup and view all the answers

What is the defining size of nanoparticles according to the text?

Less than 100 nm in diameter Signup and view all the answers

In which area can nanotechnology make a concrete contribution based on the information provided?

Reducing the need for maintenance Signup and view all the answers

What is a property of materials reduced to the nanoscale as mentioned in the text?

They exhibit very different properties compared to macroscale Signup and view all the answers

Which building materials incorporate nanotechnology according to the information provided?

Self-cleaning windows Signup and view all the answers

What is the function of the outer skin of the structure as per the given information?

Absorbs sunlight through an organic photovoltaic skin Signup and view all the answers

What are the applications of titanium dioxide and zinc oxide nanoparticles mentioned in the text?

Reflecting UV light and chemical reactivity Signup and view all the answers

What is the main function of nanosensors as per the given information?

Monitoring temperature, humidity, and toxins Signup and view all the answers

What is a characteristic of nanoparticles for most applications as stated in the text?

They are usually fixed, attached to a surface or within a composite Signup and view all the answers

What can nanotechnology contribute to as a direct result based on the given information?

Reducing CO2 emissions Signup and view all the answers