07-10-2016, 03:11 PM
1458222093-sudheer.pptx (Size: 3.6 MB / Downloads: 6)
What is meant by cancer?
Is defined as uncontrollable cell division. i.e. the damage cells divide uncontrollably to forms lumps or masses of tissues called tumors
Tumors can grow and interfere with the digestive,nervous,and circulatory systems.
Tumors releases hormones that alters the body functionalism
It is caused due to smoking, environmental factors,genetics.etc
Cancer treatment:
Surgery.
Radio therapy.
Chemotherapy.
Immunotherapy.
Gene therapy.
Hormone therapy.
Disadvantages of this treatments
If cancer is not metastasis cancer ; it is not possibly to remove it surgically
Since lots of chemicals are used; it damages the healthy tissues, functionalisms of other systems
Side affects of treatments are hair loss, nausea, itching, vomiting, etching etc
High cost of treatment
Chemotherapy reduces the life span of a person
Treatments are not easily available for people
Cure Using Nanorobots
Inject nanorobots into patient
Detect cancer Cells
Destroy Cells
Do not affect on Healthy Cells
Nanorobotics:
Deals with miniscale things at micro level.
Has ability to sense and act in microscopic environment
Used in diagnosis and treatment of disease.
Main elements are carbon, Hydrogen,Sulphur,Oxygen,
Nitrogen,Fluorene,Silicon etc
1.Sensors:
Main features of nano sensors:
Low energy consumption and high sensitivity.
By using nano wires power consumption can be reduced up to 60%.
Carbon nanotubes serves as an ideal materials.
New materials like SiGe can be used to reduce self heating and improve performance.
New techniques like Silicon-on-Insulator (SOI) are under development.
How can this sensors sense the TUMOUR cells?
This sensors mainly function depending on content of
E-Cadherin.
Plays an important role in Cell
formation and growth.
The level of this E-Cadherin is less
in tumour cells compared to normal cells
Effect the pH level.
So pH responsive nano sensors
like Phosphatidic acid sensors are employed.
2.Actuators:
There are different kinds of actuators:
Electromagnetic.
Piezoelectric.
Electrostatic.
Electro thermal.
Even ATP can be used as nanomotors
For treating cancer
CNT self assembly and SOI property are combined to produce NANOACTUATORS.
Embedded actuators help nanorobot for direct interaction with the blood stream
Power supply:
There are several ways to supply energy to nanorobots:
Temperature displacement.
Electro magnetic radiation from light.
Energy due to motion in traction with blood.
Remote inductive power.
Energy produced from our blood due to chemical reactions.
4. Nano chip:
Nano chip is used to receive signals from nano biosensors and depending on information it performce it’s task
5. Nano container:
Contains highly concentrated enzymes which are to be delivered to the effected cells.
Advantages:
Total cure.
Small size.
Inexpensive(if mass produced)
No maintenance.
Automated.
Painless treatment.
Easily disposable.
Dis advantages:
The initial design cost is very high.
Complicate Design.
Nanorobots should be Accurate. If there is an error then harmful effect occurs.
Electrical systems can create stray fields which may activate bioelectric-based molecular recognition systems in biology.
Electrical nanorobots are susceptible to electrical interference from external sources such as RF or electric fields, EM pulses, and stray fields from other in vivo electrical devices.
Hard to Interface.