Chapter 21, Problem 21.13CP

Interpretation Introduction

Interpretation:

Using the diameter of the quantum dot nanoparticle, determine how many particles it takes to add up to the width of a human hair of 50 µm.

Concept introduction:

• Quantum dots are examples of semiconductor nanoparticles whose colours vary with the diameter of the particle.
• On the nanoscale, both particle size and chemical composition affect the properties as $$ different sized quantum dots exhibit different colours.

To classify:The number of nanoparticles that fit across a human hair.