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Detailed explanation-1: -Made of electronic circuits coupled to minute particles, the devices could flow through intestines or pipelines to detect problems.

Detailed explanation-2: -Microrobots are usually smaller than a millimetre but as large as a micron-that’s between a 1, 000th of a metre to a millionth of a metre in size. Nanorobots are even more minute-smaller than a millionth of a metre, or about a 100th the width of a hair.

Detailed explanation-3: -The cell-sized robots are little squares of silicon with legs made from platinum and titanium, able to swim around inside your body and track vital signs. The bots are equipped with miniature solar cells, powered with laser light.

Detailed explanation-4: -More On: robots The “millibot” can carry payloads directly to a tumor, blood clot or infection and can dispense drugs or investigate inner workings. Scientists hope the machine will revolutionize medicine, replacing pills or injections that can cause life-threatening side effects.

Detailed explanation-5: -Nanorobots are so small that they actually interact on the same level as bacteria and viruses. Nanorobots or nanobots are measured in nanometers or a millionth of a millimeter.