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← ScienceWhich limit arises when quantum dots are excessively squeezed?
A)Increased electron quantum tunneling✓
B)Reduced Coulomb blockade regime
C)Enhanced exciton radiative recombination
D)Higher photon absorption cross-section
💡 Explanation
Increased electron quantum tunneling limits miniaturization by decreasing confinement; because wavefunctions leak through energy barriers between dots. Therefore tunneling increases, rather than lower blockade, at higher squeezing under size constraints with spatial dimensions.
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