A human fetus begins life as a single cell, and then divides to become two cells, then four, then eight and so on. Nanotechnology aims to build in a similar way, constructing objects out of their most basic components. A nanometer is a thousandth of a millionth of a meter. This is about as far down in size as it is feasible to go, because a nanometer is equivalent in size to about three to five atoms. For us, and the things around us in ordinary life, atoms are the ultimate building blocks. If we could get down to that nanometer level, and craft the object with atomic precision, the power of our ability to control the behavior of this object would become immense. The ultimate goal of nanotechnology is to build robots smaller than living cells with the ability to arrange individual atoms into any physically possible pattern with what might be called as nanoscopic precision, the way the nature does. Nanorobots are theoretical nanodevices that will be used for the purpose of maintaining and protecting human body against pathogens. The nano-robots, being smaller than living cells, are equipped with arms able to grasp and manipulate individual atoms, would resemble extremely small unmanned submarines. Nanorobots can theoretically destroy all common diseases of the 2lst century thereby ending much of the pain and suffering. It can also have (alternative, practical uses such as improved mouthwash and cosmetic creams that can expand the commercial market in biomedical engineering. People can envision a future where people can self-diagnose their ‘own ailments with the help of nanorobot monitors in their bloodstream.
[...] The cream could be a smart material with smooth-on, peel-off convenience Medical nanodevices could augment the immune system by finding and disabling unwanted bacteria and viruses. When an invader is identified, it can be punctured, letting its contents spill out and ending its effectiveness. If the contents were known to be hazardous by themselves, then the immune machine could hold on to it long enough to dismantle it more completely Devices working in the bloodstream could nibble away at arteriosclerotic deposits, widening the affected blood vessels. [...]
[...] The nano-robot will remain outside the cell while the nano- manipulators will penetrate into targeted or damaged cell thus avoiding any possibility of causing damage to the intracellular skeleton. Figure 4 gives a wonderful simulation of how this process takes place. Figure3. Nanorobot at work Figure 4. Cell surgery Thus these nano-robots when enter into human bloodstream provide cell surgery and extreme life prolongation. A navigational network may be installed in the body to keep track of the whereabouts of the nano-robots, with station keeping navigational elements providing high positional accuracy to all passing nano-robots that interrogate them, wanting to know their location. [...]
[...] Doctors today cannot affect molecules in one cell while leaving the identical molecules in the neighboring cells untouched, because medicine today cannot apply surgical control to the molecular level. Current medicine is still limited in its understanding and in its tools. In many ways it is more an art than a science. However, in some areas it has become more scientific, but in others not much at all NANOROBOTS A SOLUTION The emerging trends of nanorobots are aimed at overcoming these short comings. [...]
[...] It may have powerful transport subsystem to deliver molecules and atoms to the working nano-manipulators from storage systems. It should also have wide range of computer guided nano-manipulators. It may be manufactured from flawless diamonded due to bio-capability with human body. It may have broadcasting system which can connect to other nano- robots. It may have long telescopic manipulators to hold cells or surfaces. Figure-2 shows the design and explanation of a diamondoid cell-repair nano- robot that might be used in near future in the medical applications. [...]
[...] Although the bloodstream presents in most cases laminar flow, in the heart we have turbulent flow. The sounds produced by the heart are the result of diastolic and systolic pressures, which comes from the partially constricted vibrating arteries motions. Blood waveforms can also be analyzed using Fourier models to quantify the dynamics of blood pressure and flow. The fluid in the Left Anterior Descending (LAD) moves with velocity ~38cm/sec (fig. as is typical of flow in aorta and arteries vessels. [...]
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