Grab for picking fruit from the ground. Drawing, description

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Grab for picking fruit from the ground. Tips for the home master

Builder, home master

He sees the eye, but the tooth is numb - this is what we usually say when we see a particularly appetizing apple on one of the upper branches. Believe me, you will soon forget this saying if you make a simple grip, shown in our picture.

First of all, you need a wooden stick of round cross section and the required length. A simple device is hinged to one of its ends. Each of its halves consists of two steel strips with an aluminum cup riveted to them. A nylon cord is attached to the free ends of the strips, then it is passed through a half ring and attached to a lever located near the tool handle.

The initial position of the gripper cups is open, it is provided by a spiral spring. Push the lever forward - the cups will open, now the grip can be brought to the apple and, pulling the lever towards you, carefully cut the fruit.

Grab for picking fruit from the ground

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Aerosol with nanobots 03.08.2018

Scientists from the Massachusetts Institute of Technology have created the world's first aerosol containing nanobots. The discovery could radically change the development of robotics. These nanobots can do almost everything from detecting dangerous leaks in pipes to diagnosing health problems.

Each sensor in an aerosol spray consists of two parts. The first is a colloid, a tiny insoluble particle or molecule. Colloids are so small that they can float in air or water forever - the force of the particles colliding around them is greater than the force of gravity.

The second part is a complex circuit consisting of a chemical detector built from a two-dimensional material like graphene. When this sensor encounters a certain chemical in the environment, its ability to conduct electricity is enhanced. The circuit also features a photodiode, a device capable of converting light around it into electrical current. It provides the system with the energy needed to collect data and the nanobot's memory.

The researchers grafted the circuit onto colloids, thus giving the latter the ability to travel in unique environments. After combining, the scientists gave the nanobots the form of a spray, that is, they can now be sprayed. This delivery method would not be possible without colloids. "The circuits couldn't exist without a substrate," says study lead author Michael Strano. "We had to embed the circuits into the particles to give the system strength and also make it big enough for the bots to travel with the flow."

What are these nanobots for? Scientists have demonstrated several ways to use them. For example, they designed sensors to detect poisonous ammonia and tested this ability in a section of pipe. They sprayed the sensors from one end and collected them from the other with gauze. By analyzing the information in the diagrams, they were able to tell if the sensors had come into contact with ammonia.

In the real world, the technology could save inspectors the trouble of inspecting the entire pipe from the outside by simply spraying nanobot aerosols down there.

The same technology can help diagnose diseases in the human body by traveling through the digestive tract, collecting information and delivering it to doctors.

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