Question

One dimensional nanostructure amongst the following is _______.

• A. Nanoparticles
• B. Nanotubes
• C. Nanofilms
• D. Nanorods

Hint:

Think of the "D" as the number of "free" or large dimensions. - 0D: A point (all small) \(\rightarrow\) Nanoparticles. - 1D: A line (long in one direction) \(\rightarrow\) Nanotubes, nanorods. - 2D: A plane (large in two directions) \(\rightarrow\) Nanofilms.

Answer 1

The Correct Option is B

Step 1: Understand the dimensionality of nanostructures.
Nanostructures are classified based on the number of dimensions that are not confined to the nanoscale range (typically 1-100 nm).
- 0D (Zero-dimensional): All three dimensions are at the nanoscale. Example: Nanoparticles (quantum dots).
- 1D (One-dimensional): Two dimensions are at the nanoscale, while the third is larger, creating an elongated structure. Examples: Nanotubes, nanorods, nanowires.
- 2D (Two-dimensional): One dimension is at the nanoscale, while the other two are larger, creating a sheet-like structure. Example: Nanofilms (graphene).
- 3D (Three-dimensional): None of the dimensions are confined to the nanoscale. These are bulk materials made of nanoscale components.
Step 2: Classify the options.
- Nanoparticles are 0D.
- Nanotubes are 1D.
- Nanofilms are 2D.
- Nanorods are 1D.
Both Nanotubes and Nanorods fit the description of a one-dimensional nanostructure.