Nanobiotechnology

1. M.AJMEER ALI
CARBON NANOTUBES AND
BIOMEDICAL APPLICATIONS

2. What Is a Carbon Nanotube?
 A Carbon Nanotube is a tube-shaped
material
 It is made up of Carbon
 Having a diameter measuring on the
nanometer scale

3.  Carbon nanotubes (CNTs) are nanostructures
derived from graphene planes
 The discovery of carbon nanotubes by Lijima in
1991 using High Resolution Electron
Microscopy(HREM)
 Carbon Nanotubes are allotropes of carbon that
have a nanostructure

4.  Carbon nanotubes (CNTs), in particular, have
been introduced in pharmacy and medicine for
drug delivery system in therapeutics since the
beginning of the 21st century
 They have an ultra-small size, large surface area
to mass ratio, and high reactivity

5. TYPES OF CARBON NANOTUBES
 Classified mainly in two types
1. SingleWalled Carbon Nanotubes [SWCNTs]
2. Multi Walled Carbon Nanotubes [MWCNTs]

6. SINGLE WALLED CARBON NANOTUBES
 SingleWall Carbon Nanotubes are
mono-cylindrical carbon layers
 With a diameter range of 0.4-2.0 nm
 Organized in harmony with chiral , armchair ,
and zigzag

9. MULTI WALLED CARBON NANOTUBES
 Multi walled carbon nanotubes consists of a number
of cylindrical carbon sheets
 With an average diameter of 1-3 nm for the central
cylindrical tubes
 2-100 nm for the external cylindrical tubes
 Multi wall nanotubes consists of multiple rolled
layers of graphene
 Inter layer distance 3.4 Angstrom

11.  There are two models
 In the Russian Doll Model , a carbon nanotube
contains another nanotube inside it
 In the parchment Model is a graphene sheet is
rolled over itself. It looks like a scroll

12. Russian Doll Model

13. Parchment Model

14. BIOMEDICAL APPLICATIONS
 Drug delivery
 Highly elastic nature and have the possibility of
intracellular delivery
 Biomedical imaging
 Biosensors
 Tissue regeneration

15. THANK YOU