Free technical library. Articles from the magazine Modelist-constructor, 2003

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Alphabetical list articles with annotations, from magazines published in 2003 in the journal Modeler-constructor:

MERCEDES-BENZ E class

Automatic-economy

American Hound for the British Army

American aircraft with German wing. Strategic bomber B-47 STRATOGET

Atlantes of electrical circuits

Snowmobile with the comfort of a car

Concrete - jigsaw

Concrete mixer in a hurry

British nuclear bomber

Fighting for the harvest

In the air - train

In the sky - on the rotor. Cord model of autogyro with MK-17 engine

In search of comfort (From experience in Windows 9x)

Looking for comfort. From experience in Windows 9x

In flight corrugated plastic

To help the omentum

In a quarter of a brick

Velomobiles from Tambov

Bicycle changes shape

Fan... lamp

Instead of a sail - a rotor. Model of a catamaran with a rotary wind propulsion

SUV-pneumatic

The return of MINI. Front wheel drive MINI COOPER S 2002 edition

Return to Eagle

Onward to Mars!

Choosing a huller

Hercules sits down on deck

Hunchback from Seattle. Boeing F4B carrier-based fighter

Rake with wheels

Fiat storm. Soviet fighter polutoraplan I-15

A bed of ... tires

Two in One

Wooden Moskvich

Joystick with keyboard

Sofa-transformer. According to the materials of the journal Kultur und heim (Germany)

Bad weather division

For welding, starting and charging

For shooting in the dark

Entrust computer calculation

Home heat stabilizer

Duet schemes for UMZCH

If there is trouble at sea... ROSTOK boat model

For the watchman - phone call

Replacing ROM chips

belated impromptu

Launch - throw. Throwing model-half-copy of the Su-24 aircraft

[1] [2] [3] [4]

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Innovative silicon supercapacitor 19.11.2013

The innovative supercapacitor design, created by material scientists at Vanderbilt University (USA) under the guidance of Assistant Professor Cary Pint, makes it possible to create photovoltaic cells capable of generating electricity around the clock and not only when the sun is shining.

It is claimed to be the first supercapacitor made entirely from silicon and along with the microelectronic circuit it powers. And it can be used in built-in mobile phone batteries that charge in seconds and last for weeks between charges.

Scientists believe it will be possible to build batteries from the excess silicon found in today's photovoltaic cells, sensors, mobile phones and many other electromechanical devices, reducing the cost of these devices.

"If you ask people to make a supercapacitor out of silicon, they'll tell you it's a crazy idea," said Carey Pint, an assistant professor in the department of mechanical engineering who led the study. "But we've discovered a simple way to do it."

Instead of storing energy in chemical reactions, as batteries do, supercapacitors store energy by collecting ions on the surface of a porous material. As a result, they have the ability to charge and discharge in minutes rather than hours, and last for several million cycles rather than the thousands of cycles that batteries can.

These properties have enabled supercapacitors made from activated carbon to capture several niche markets, such as storing the energy generated by regenerative braking systems in buses and electric vehicles and providing the surge current needed to regulate the blades of giant wind turbines as wind conditions change. Supercapacitors still lag behind lithium-ion batteries in terms of specific capacity, so they are still too bulky to power most consumer devices. However, they are developing rapidly.

"Building high-performance functional devices from nanoscale building blocks with any level of control proved to be quite a challenge. And once it was done, it proved difficult to repeat," explained Assistant Professor Cary Pint.

“Despite the excellent performance of the device that we got, our goal was not to create devices with record parameters,” Pint said. “The goal was to develop methods for creating integrated energy storage. Silicon is an ideal material to work with, because it is the basis for many modern technologies and devices. In addition, most of the silicon in existing devices remains unused due to the fact that it is very expensive and unprofitable to produce thin silicon substrates."

Pint's group is now using this approach to create an energy store that could be formed in excess material or on the back of photocells and sensors. Supercapacitors could store excess electricity generated by photovoltaic cells during the day and release it during peak hours in the evening.

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