Podcast
Questions and Answers
What is a nanometer?
What is a nanometer?
When was the term 'Nanotechnology' defined?
When was the term 'Nanotechnology' defined?
What is nanoscience?
What is nanoscience?
What did the invention of the scanning tunneling microscope lead to?
What did the invention of the scanning tunneling microscope lead to?
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What is the width of a human hair compared to nanomaterial shapes?
What is the width of a human hair compared to nanomaterial shapes?
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Study Notes
Nanometer
- A nanometer (nm) is a unit of measurement equal to one billionth of a meter (1 nm = 10^-9 meters).
- This scale is crucial in the study of materials and molecules at the atomic level.
Definition of Nanotechnology
- The term 'Nanotechnology' was defined in 1974 by physicist Norio Taniguchi.
- It refers to the manipulation and engineering of materials at the nanoscale, typically ranging from 1 to 100 nanometers.
Nanoscience
- Nanoscience is the study of phenomena and manipulation of materials at the nanoscale.
- It encompasses various fields including physics, chemistry, biology, and materials science.
Invention of the Scanning Tunneling Microscope
- The invention of the scanning tunneling microscope (STM) in 1981 by Gerd Binnig and Heinrich Rohrer enabled visualization and manipulation of individual atoms.
- This breakthrough allowed scientists to explore electronic properties and led to advancements in nanotechnology and nanoscience.
Human Hair vs. Nanomaterial Shapes
- The average width of a human hair is approximately 80,000 to 100,000 nanometers.
- Nanomaterials can have dimensions that are one hundred thousand times smaller than a human hair, typically within the range of 1 to 100 nanometers.
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Description
Test your knowledge about nanometer, nanostructured materials, technology, nanoscience, and nanotechnology with this quiz based on a lecture by Dr. Nada Elgiddawy.
