A change in scale fundamentally rewrites the rules of behavior.
Chapter 1

Secrets of the ancient nanotech masters

Chapter 2

When shrinking down changes the rules

Chapter 3

Tiny doctors inside our bodies

Chapter 4

Nanomaterials shaping our future world

Ch 2 · When shrinking down changes the rules
007skaty

007skaty The color identity crisis of gold nanoparticles.

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007skaty Superparamagnetic Nanoparticles

When magnets shrink to nano size, they lose their grip, And thermal energy can make their poles just flip.

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A change in scale fundamentally rewrites the rules of behavior.

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007skaty Quantum dots are nanometer-sized semiconductor crystals that emit light.

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The golden color identity crisis

007skaty Localized surface plasmon resonance makes electrons in tiny gold nanoparticles vibrate with light waves, changing the colors they absorb and reflect.

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The magic of massive surface area

007skaty This extreme surface exposure drives incredibly fast and powerful chemical reactions.

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Quantum Glow Buddies
BETA

007skaty Resize your quantum buddies to discover how nanoparticle size controls their glowing colors.

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Fun Fact

Size comparison: If a nanoparticle were the size of a soccer ball, a regular soccer ball would be the size of the Earth!

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Glossary
nanoparticle (noun)
A microscopic particle of matter that has at least one dimension between 1 and 100 nanometers. In 1857, Michael Faraday created red colloidal gold, demonstrating how shrinking the metal altered its physical properties.

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Gossip

Which nanoscale phenomenon do you find the most mind-bending?

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Quiz

What color do gold nanoparticles typically appear when suspended in a liquid solution?

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007skaty Why extremely small magnetic nanoparticles lose their permanent stickiness

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Quiz

What is the scientific term for the synchronized vibration of electrons in nanoparticles that changes their color?

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Quiz

Why does having a high surface-area-to-volume ratio make nanoparticles excellent chemical catalysts?

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Quiz

What happens to the total surface area of a material as you break it down into nanoparticles?

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Quiz

What determines the color of light emitted by a semiconductor quantum dot?

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Quiz

In which modern consumer technology are quantum dots widely used to produce highly vibrant colors?

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Quiz

What is the term for magnetic nanoparticles that only show magnetic properties near an external magnet?

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Quiz

Why is it important that magnetic nanoparticles lose their magnetism when no external magnetic field is present?

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