INTRODUCTION:

Nanorobotics is an emerging technology in this century. It making machines or robots whose parts square measure at or getting ready to the dimensions of a nm (10−9 meters). More specifically, nanorobotics refers to the engineering science engineering discipline of coming up with and building nanorobots, with devices locomote in size from zero.1–10 micrometres and created of nanoscale or molecular elements. Nanomachines are largely in the research and development phase, but some primitive molecular machines and nanomotors have been tested. An example may be a detector having a switch about one.5 nanometers across, capable of tally specific molecules in an exceedingly chemical sample.

The first useful applications of nanomachines might be in nano-medicine. For example, biological machines could be used to identify and destroy cancer cells. Another potential application is that the detection of cyanogenetic chemicals, and therefore the mensurationof their concentrations, within the setting. Another definition may be a automaton that permits preciseness interactions with nanoscale objects or will manipulate with nanoscale resolution. Such devices square measure additional associated with research or scanning probe research, rather than the outline of nanorobots as a molecular machine.

When the insufficient device acknowledges a target cell supported its surface proteins, the 2 halves swing open sort of a clam to deliver a small however deadly wares of medication or nano-particles. These could be molecules that force cancer cells to self-destruct by interfering with their growth,

· To destroy the cancers cell in the human body

· To remove the blocks in blood vessels.

· Replacement of DNA Cells^[1]

STRUCTURE AND DESIGN OF NANOROBOTS:

Components of Nanorobots:

The main content of nanorobots area unit carbon as a result of it's inert and possess sensible strength and within the style of diamondoid or C. The other components are hydrogen, oxygen, nitrogen, sulfur, silicon and fluorine, etc. which are used on nano-scale. ^[2]

Parts of Nano-robot:

Medicine cavity:

It is a hollow section inside the nano-robot used to hold small doses of medicine. This robot is capable of releasing medication directly to the site of injury or infection. Nano-robots could also carry the chemicals used in chemotherapy to treat cancer. Although the number of medication is comparatively minute, applying it on to the cancerous tissue could also be more practicalthan ancient therapy, that depends on the body's cardiovascular system to hold the chemicals throughout the patient's body.

Probes, knives and chisels:

To remove plaque and blockages these probes, knives and chisels are used These components facilitate Nanorobot to grab and break down the fabric. Also, they may want a tool to crush clots into terriblytiny items. If a partial clot breaks free and enters the blood, it should cause a lot of issues additional down the cardiovascular system.^[3]

Microwave emitters and ultrasonic signal generators:

A doctor needs a method for destroying cancerous cells without rupturing it. A ruptured cancer cell might release chemicals that could cause cancer to spread further. By exploitation fine tuned microwaves or supersonic signals, a nanorobot may break the chemical bonds within the cancerous cell, killing it while not breaking the cytomembrane. as an alternative, the mechanism may emit microwaves or supersonic signals so as to heat the cancerous cell enough to destroy it.

Electrodes:

With the help of electrodes, nanorobots produce electric current, heat the cell until it destroy.

Lasers:

Power laser may burn the harmful materials like cancerous cells, blood clots and plaques. These lasers vaporize tissues. With the help of powerful laser vaporizing cancerous cells is the challenging work, but this laser does not harm to surrounding tissues. The team around the whole world is working now a day, to develop medical nanorobots that are small and enter into the blood stream. Nanorobots millimeter to hefty two centimeter long had developed but not used in health care, these are in the testing phase. For entering nanorobots in medical market long time may be required³

Power supply for nanorobots:

Both outside and inside nanorobots get power. Nanorobots obtain power straight from blood stream, for generating power nanorobots use patient's body heat. These work just similar to a navigation system^[4]

ADVANTAGES:

· Use of nanorobot drug delivery systems with increased bioavailability;

· Targeted therapy such as only malignant cells treated;

· Fewer mistakes on account of computer control and automation;

· Reach remote areas in human anatomy not operatable at the surgeon’s operating table;

· As drug molecules square measure carried by nanorobots and free wherever required the benefits of the massive surface space throughout mass transfer may be realized. Non-invasive technique

· Computer controlled operation with nobs to fine tune the amount, frequency, time of release;

· Better accuracy;

· Drug inactive in areas where therapy not needed minimizing undesired side effects^.[6]

DISADVANTAGES:

· The initial style price is extremely high.

· The style of the nanorobot may be a terribly sophisticated one.

· Electrical systems will produce stray fields which can activate bioelectric-based molecular recognition systems in biology.

· Hard to Interface, customise and style, Complex

· Nanorobots will cause a brutal risk within the field of coercion.

· The coercion and opposing teams will build use of nanorobots as a replacement type of torturing the communities as engineering conjointly has the potential of destructing the flesh at the molecular level.

· Privacy is that the alternative potential risk committed Nanorobots. As Nanorobots deals with the planning of compact and minute devices, there square measure probabilities for additional^[^6]

APPROACHES:

1. Biochip:

The joint use of nanoelectronics, lithography, and new biomaterials, will be thought of as a potential thanks to modifythe specified producing technology towards nanorobots for common medical applications, like for surgical instrumentation, designation and drug delivery. Indeed, this possible approach towards producing on engineering may be a follow presently in use from the industry.

2. Nubots:

Nubot is AN short kind for "nucleic acid robots." Nubots ar artificial AI devices at the nanoscale. Representative nubots embrace the many DNA walkers according by Ned Seeman's cluster at NYU, Niles Pierce's cluster at Caltech, John Reif's cluster at university, Chengde Mao's cluster at Purdue, and Andrew Turberfield's group at the University of Oxford.

3. Positional nano-assembly:

Nanofactory Collaboration supported by parliamentarian Freitas and Ralph Merkle in 2000, may be acentered current effort involving twenty three analysisers from ten organizations and four countries, that are developing a useful study plan specifically planned at developing positionally-controlled diamond mechano-synthesis and a diamondoid nano-factory that would be capable of building diamondoid medical nanorobots.

4. Bacteria-based:

This approach proposes the employment of biological microorganisms, like Escherichia coli bacterium. Hence, the model uses a flagellum for propulsion functions. the employment of magnetism fields is often applied to manage the motion of this type of biological integrated device, though his restricted applications.9

5. Open Technology:

A document with a proposal on nano biotech development exploitation open technology approaches has been self-addressed to the international organisation General Assembly. According to the document sent to UN, in the similar way, Linux and Open Source has in recent years accelerated the growth of computer systems, a similar move towards should advantage the society at large and go faster nanorobotics development. The use of nano-biotechnology should be established as a human heritage for the coming generations and developed as an open technology based on ethical practices for peaceful purposes^.[6]

APPLICATIONS:

· Nanorobots in Blood Clot.

· Nanorobots in diagnosis and treatment of diabetes.

· Nanorobots in Kidney Stones.

· Nanorobots in Cancer treatment

· Nanorobots in Arteriosclerosis

· Nanorobots in Nerve regeneration

· Nanorobots helping in Parasite Remove

· Nanorobots used in Dental

· Nanorobots used as an artificial oxygen carrier (Respirocyte)

· Nanorobots in Curing Skin Disease^.[5]

Nanorobotics for cancer treatment:

Nanorobotics is the technology of constructing robots in the nanometer scale. (10−9m). It is an emerging technology in the recent times. Nanorobots and their application in the medical field are currently under development. In collaboration with medicine, nanorobots are programmed to perform specific biological tasks. When they are injected into the blood, they work on cancer cells or any other affected cell. Nanorobots merged with biological research will set a new milestone in the development of medical studies. The shortcomings of the present methods of treatment are taken into account to hit upon a better therapeutic treatment for this alarming disease. To target only the cancerous cells specifically, without affecting the healthy cells, and to minimize the side effects, Bachelet et al., came up with the idea of DNA nanorobots. Even if diagnosed in the later stages, DNA nanorobots can be effective in curing the disease^.[7]

WORKING METHODOLOGY OF NANOBOTS:

The nanobots are controlled by an aptamer-encoded logic gate. Any type of nano-particle can be transformed into autonomous biocomputing structures that are capable of executing Boolean logic gates (NAND, NOT, AND, and OR). Since DNA is a natural substrate for computing, it has benefitted a diverse set of logic circuits and roboticsThey will give personalised treatments with improved effectualness and reduced aspect effects that don't seem to be offeredthese days.

The logic gating practicality is incorporated into the deoxyribonucleic acid, and also the logic gating is achieved through input-induced dismantling of the structures within the deoxyribonucleic acid. totally different styles of DNA-based biocomputing have already been incontestable. Now, it's been shown that deoxyribonucleic acid artistic production may be accustomed devise nanoscale robots that have the capability to act with one another with dynamism once introduced into the body. These interactions produce logical outputs, which are used to open or close the nanobot to release the drug, on spotting the targeted cell. ^[7]

CONCLUSION:

Nanorobots applied to medicine hold a wealth of promise from eradicating disease to reversing the aging process (wrinkles, loss of bone mass and age-related conditions are all treatable at the cellular level). They will give personalised treatments with improved efficaciousness and reduced aspect effects that don't seem to be out therenowadays

ACKNOWLEDGEMENT: -

the corresponding author acknowledge to his parents specially his father SK MD Jameel Pashumiya for their support and motivation.

REFERENCES:

1. D. Karthik Raaja et al, A Mini Review On Nanobots In Human Surgery And Cancer Therapy, Ijsrme, Issn (Online): 2455 – 5630

2. Abhilash M. Nanorobots. International Journal of Pharma and Bio Sciences, 2010; 1(1): 1-10.

3. http://electronics.howstuffworks.com/nanorobot5.html.

4. www.mdpi.org/sensors/papers/s8052932.pdf.

5. Nandkishor et al. REVIEW ON APPLICATION OF NANOROBOTS IN HEALTH CARE wjpps Vol 3, Issue 5 472-480, 2014.

6. Khulbe P: Nanorobots: A Review. Int J Pharm Sci Res 2014; 5(6): 2164-73.doi: 10.13040/IJPSR.0975-8232.5(6).2164-73

7. Umai et al. A REVIEW ON DNA NANOBOTS – A NEW TECHNIQUE FOR CANCER TREATMENT, Asian J Pharm Clin Res, Vol 11, Issue 6, 2018,61-64.

Received on 18.09.2018 Modified on 05.10.2018

Res. J. Pharma. Dosage Forms and Tech.2019; 11(1):43-46.

DOI: 10.5958/0975-4377.2019.00007.7