Which mechanism limits minimizing a quantum dot's size below the exciton Bohr radius?

💡 Explanation

When a quantum dot's size falls below the exciton Bohr radius, increased quantum confinement sharply raises the energy levels and momentum uncertainty due to Heisenberg's principle, disrupting the electron-hole pair. Therefore, quantum confinement energy prevents further size reduction, rather than plasmon resonance, scattering effects, or dielectric screening which become dominant in larger quantum dots.

• Which consequence results when exceeding the Curie temperature of ferrite cores in a SMPS?
• Which outcome results when nitrogen fixation is inhibited?
• Which outcome occurs when exceeding shock loading of piezoelectric crystal?
• Which consequence results when exceeding the pulse duration limit in ultrafast lasers?
• Which outcome occurs when the compression ratio in an ideal Otto cycle engine increases beyond design limits?
• Which risk increases when a chemical reactor nears runaway?