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Nanotechnology builds materials atom by atom. Nanotechnology builds materials atom by atom.

Tiny structures, big effects

By Peter Teoh, Science Writer

At the nanoscale, materials act differently. By controlling structure at the level of atoms and molecules, scientists create new properties.

Explainer: Why size changes behavior

Focus: Nanoparticles have a high surface-area-to-volume ratio, making them more reactive. Quantum effects also appear at tiny scales, changing optical and electrical behavior.

Engineers use these effects to build stronger materials, targeted drug carriers, and efficient catalysts. Precision at the nanoscale leads to performance gains in the macroscopic world.

Summary of Key Ideas:

  • Nanoscale structures amplify surface effects.
  • Quantum behavior emerges at tiny sizes.
  • Applications range from medicine to energy.

Side Notes

  • Safety testing is vital for new nanomaterials.
  • Self-assembly lets molecules build structures.
  • Nanoparticle drug delivery.
  • Nanostructured batteries.

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