16 Questions
What is the size range that nanotechnology generally deals with?
100 nanometers or smaller
What is the equivalent of a nanometer in millimeters?
1/1,000,000 mm
What is the diameter of the human hair in nanometers?
80,000 nm
When did the development of nanotechnology and nanoscience start?
Early 1980s
What are one-dimensional Nanomaterials used for?
Electronic device manufacture
What was discovered in 1985 leading to the development of nanotechnology?
Fullerenes
What are the properties of carbon nanotubes (CNTs) as mentioned in the text?
Very strong, flexible around their axis, and excellent conductor of electricity
What is the defining size of nanoparticles according to the text?
Less than 100 nm in diameter
In which area can nanotechnology make a concrete contribution based on the information provided?
Reducing the need for maintenance
What is a property of materials reduced to the nanoscale as mentioned in the text?
They exhibit very different properties compared to macroscale
Which building materials incorporate nanotechnology according to the information provided?
Self-cleaning windows
What is the function of the outer skin of the structure as per the given information?
Absorbs sunlight through an organic photovoltaic skin
What are the applications of titanium dioxide and zinc oxide nanoparticles mentioned in the text?
Reflecting UV light and chemical reactivity
What is the main function of nanosensors as per the given information?
Monitoring temperature, humidity, and toxins
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
What can nanotechnology contribute to as a direct result based on the given information?
Reducing CO2 emissions
Learn about nanometer scale, mechanical effects, and new physics and chemistry in this lecture by Prof. Doaa Abdel Rahman on smart and nano materials. Understand the significance of dimensions at the nanoscale and the human hair diameter in nano meters.
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