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Economical hybrid motorcycle

21.09.2002

The Japanese company Yamaha announced the creation of a prototype of the world's first and most economical hybrid motorcycle, which is enough for 1 liter of gasoline to travel 250 km.

The new motorcycle resembles a bicycle and is equipped with electric and gasoline engines. The electric motor is located near the pedals and is used for starting off. When the motorcycle picks up speed of 5 km / h, a small gasoline engine hidden under the saddle comes into action, which recharges the battery during the movement.

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Created ultra-fast and super-efficient memory 28.05.2012

University College London (UCL) was the first place to create "resistive random access memory" (Resistive RAM, ReRAM) chips based on silicon oxide, operating under normal conditions. This achievement paves the way for a new ultra-high-speed memory, the researchers believe.

The principle of operation of ReRAM is to change the resistance of the material under the influence of voltage. The memory is non-volatile, that is, it retains its state in the absence of power. The advantages of ReRAM over the currently widely used flash memory include, in addition to high speed, higher density, greater durability and lower power consumption.

Work on the creation of ReRAM has been going on for a long time. From recent reports on this topic, we can recall the news about the prototype of ReRAM, created by Elpida Memory at the beginning of this year.

The difference between the development of UCL and all previous ones lies in the new structure of the memory cell, consisting of silicon oxide. It is characterized by a higher efficiency of switching the cell from one state to another. Under the action of a switching voltage, silicon "filaments" are formed or destroyed in the oxide, respectively decreasing or increasing the cell resistance. It is important that the chip works under normal conditions, and not in a vacuum, like other designs under development, which also use silicon oxide.

An interesting feature of the new memory is the possibility of forming it in the form of thin transparent films, for example, integrated into the touch screens of mobile devices. Compared to flash memory, London-based ReRAM consumes about a thousand times less power and is about a hundred times faster.

Interestingly, as happens in science, the new memory was not created on purpose: the researchers studied the possibility of using silicon oxide in LEDs and drew attention to the instability of the oxide film parameters and its ability to take two states.

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