Kegiatan Pembelajaran Pendahuluan 1 Teknologi Nano

Summary

This video explains the concept of 'nano,' emphasizing how incredibly small it is, at a scale millions of times smaller than the smallest visible measurements. It illustrates the size of a nanometer by shrinking a person down to the size of a red blood cell and then smaller, until they reach the nano scale. The video highlights that everything, including red blood cells, is made up of nano materials, which are essential for stability and flexibility in biological structures. It provides an engaging perspective on the world of nanomaterials, showing how everything around us is shaped by them, even down to the smallest components of life.

Takeaways

• 😀 A nanometer is incredibly small, a million times smaller than the smallest measurement on a ruler.
• 😀 To understand the scale of a nanometer, imagine shrinking a hair strand down to the size of a red blood cell.
• 😀 At the size of a red blood cell, a strand of hair looks like an enormous tree compared to you.
• 😀 Even at the size of a red blood cell, you would still be about a thousand times too big to be considered 'nano'.
• 😀 Shrinking to 100 nanometers makes you smaller than the wavelength of visible light, rendering you nearly invisible.
• 😀 At the nano scale, a red blood cell is about 1,000 times bigger than you and appears like a giant stadium.
• 😀 You could comfortably hold a common cold virus, like the rhinovirus, which is only about 30 nanometers in size.
• 😀 While red blood cells are not nano-sized, they contain nano materials that are crucial for their function.
• 😀 The outer walls of red blood cells are stabilized by a flexible protein skeleton, made up of nano materials.
• 😀 Nanomaterials are arrangements of molecules and atoms that form stable building blocks for larger structures, including cells and hair.

Q & A

What does 'nano' mean?

'Nano' means small—very small. It refers to something that is one million times smaller than the smallest measure on a ruler.

How can we visualize the size of a nanometer?

To visualize the size of a nanometer, you can take a strand of hair from your head. While this hair looks small to the naked eye, when you shrink down to the nano scale, it would appear enormous in comparison.

What happens if you shrink yourself to the size of a red blood cell?

If you shrink yourself to the size of a red blood cell, your strand of hair would appear to be an enormous tree, as the red blood cell is still about 1,000 times larger than you at this scale.

How much smaller would you need to be to reach the nano scale?

To reach the nano scale, you would need to shrink yourself to about 100 nanometers tall, which is significantly smaller than a red blood cell.

Why are you invisible at the nano scale?

At the nano scale, you are smaller than the wavelength of visible light, making you practically invisible to the naked eye.

What is the size of a common cold virus compared to a red blood cell?

A common cold virus, such as the rhinovirus, is only about 30 nanometers across, making it much smaller than a red blood cell, which is 1,000 times bigger than the virus.

What are nano materials, and where can they be found in the body?

Nano materials are arrangements of molecules and atoms that form stable building blocks for larger structures. In the body, nano materials are found in things like the protein mesh structure that reinforces the cell walls, making red blood cells more flexible and stable.

Why are nano materials important for the structure of red blood cells?

Nano materials, like the flexible protein mesh that stabilizes the cell wall, are crucial for red blood cells. Without these nano structures, the cells would be fragile and not flexible enough to function properly in the body.

How does everything around us relate to nanomaterials?

Everything around us, from the smallest particles to larger complex structures, is made up of nanomaterials. These materials are the building blocks that combine to form larger objects and structures.

What is the significance of the nano scale in the world of biology and materials?

The nano scale is significant in biology and materials science because it allows for the creation of more stable, flexible, and efficient structures, such as the nano materials that reinforce cells in the body, which are vital for proper functioning.