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Nanobots Controlled By Chemical Brain

Nanobots Controlled By Chemical Brain

Chemical in the brains have been developed to control nanobots. These chemicals may also be used in future computers.

A tiny molecular device just two billionths of a meter across has been invented with the hope that it may one day act as a remote control for swarms of nano-machines.

The device, developed by Dr Anirban Bandyopadhyay of the International Center for Young Scientists, Tsukuba, Japan, has already shown promise in recent tests, being able to control up to eight microscopic machines simultaneously.

Nanobots Controlled By Chemical Brain

Scientists with the National Academy of Sciences, say the technology could be used to boost the processing power of future computers, however many experts have high hopes for nano-machines in treating disease.

“If [in the future] you want to remotely operate on a tumor you might want to send some molecular machines there..”

“But you cannot just put them into the blood and [expect them] to go to the right place.”

Dr Bandyopadhyay believes his device may offer a solution for controlling the nanobots, as well as the functions they are set to carryout.

“That kind of device simply did not exist; this is the first time we have created a nano-brain…

“The machine is made from 17 molecules of the chemical duroquinone. Each one is known as a “logic device.”

Each logical device resembles a ring with four spokes that can be independently rotated to represent four different states.

One duroquinone molecule sits at the centre of a ring formed by the remaining 16. All are connected by chemical bonds, known as hydrogen bonds.

The state of the control molecule at the centre is switched by a scanning tunneling microscope (STM).

These large machines are a standard part of the nanotechnologist’s tool kit, and allow the viewing and manipulation of atomic surfaces.

Using the STM, the researchers showed they could change the central molecule’s state and simultaneously switch the states of the surrounding 16.

“We instruct only one molecule and it simultaneously and logically instructs 16 others at a time,” said Dr Bandyopadhyay.

The configuration allows four billion different possible combinations of outcome.

The two nanometer diameter structure was inspired by the parallel communication of glial cells inside a human brain, according to the team.

To test the device, researchers docked eight existing nano-machines to the structure.

Chemical Brain Controls Nanobots

The attached devices, which were created by other research groups, included the worlds smallest elevator. This tiny device comprises of a molecular platform that can be raised or lowered on command. The lift measure two and half nanometers in height and the platform moves up or down less than one nanometer.

All eight machines were then able to simultaneously respond to a single instruction in the simulation.

“We have clear cut evidence that we can control those machines,” said Dr. Bandyopadhyay.

This flexible one-to-many communication path and the devices ability to act as a central control unit also raises the possibility of using the device in computers of the future.

The chemical brain can process 16 bits of information simultaneously with promise of new devices that will soon be able to process 256 – 1024 bits of information at one time.

Current silicon Central Processing Units can only process 1 bit of information at a time, but these days the CPUs can do this millions of times per second.

Professor Andrew Adamatzky of the University of the West England (UWE) says making a workable computer would be very difficult at the moment.

“As with other implementations of unconventional computers the application is very limited, because they operate [it] using scanning tunnel microscopy,”

But, he said, the work is promising.

“I am sure with time such molecular CPUs can be integrated in molecular robots, so they will simply interact with other molecular parts autonomously.”


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