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Carbon Nanotube Applications: Driving Innovation at the Nanoscale
Carbon nanotubes (CNTs)—cylindrical molecules made of rolled-up sheets of graphene—have captivated scientists and engineers since their discovery, thanks to their extraordinary mechanical, electrical, and thermal properties. As nanotechnology matures, carbon nanotube applications are moving from laboratories into real-world innovations across diverse industries.
What Are Carbon Nanotubes?
Carbon nanotubes are allotropes of carbon with a nanometer-scale diameter and can be categorized as:
Single-walled carbon nanotubes (SWCNTs) – one layer of graphene
Multi-walled carbon nanotubes (MWCNTs) – multiple concentric layers
CNTs exhibit:
Tensile strength > 100 times stronger than steel (by weight)
Electrical conductivity rivaling copper
Thermal conductivity exceeding that of diamond
High aspect ratios and flexibility
Key Applications of Carbon Nanotubes
1. Electronics and Semiconductors
Field-effect transistors (FETs) based on SWCNTs promise faster and smaller components compared to silicon.
Used in flexible electronics, transparent conductors, and printed circuits.
CNTs enable supercapacitors and battery electrodes with high energy density and fast charge rates