Question

Match List-I with List-II

List-I	Nanostructure	List-II	Dimension
A	Quantum dot	IV	\(0D\)
B	Quantum wire	I	\(1D\)
C	Quantum well	II	\(2D\)
D	Bulk material	III	\(3D\)

• A. A-IV, B-I, C-II, D-III
• B. A-I, B-II, C-III, D-IV
• C. A-II, B-III, C-IV, D-I
• D. A-III, B-IV, C-I, D-II

Hint:

Quantum dot is \(0D\), quantum wire is \(1D\), quantum well is \(2D\), and bulk material is \(3D\).

Answer 1

The Correct Option is A

Concept:
Quantum confined systems are classified by the number of dimensions available for carrier motion.

Step 1: Quantum dot.
Quantum dot confines carriers in all three directions. Therefore, it is zero-dimensional. \[ A\rightarrow IV \]

Step 2: Quantum wire.
Quantum wire allows free motion only along one direction. \[ B\rightarrow I \]

Step 3: Quantum well.
Quantum well allows motion in two directions and confinement in one direction. \[ C\rightarrow II \]

Step 4: Bulk material.
Bulk material allows free motion in all three directions. \[ D\rightarrow III \] Therefore: \[ A-IV,\ B-I,\ C-II,\ D-III \] \[ \therefore \text{Correct Answer is (A)} \]