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Household gas outlet

03.04.2005

Natural gas could be used not only in the kitchen, if it was distributed throughout the apartment as conveniently as electricity through sockets.

Such a system was developed by the German company Mertik Maxitrol. Gas pipes are laid in the walls of the apartment or cottage, and in each room, on the balcony, on the terrace there is a socket into which the plug of any gas appliance is inserted - a barbecue grill, a clothes dryer, a gas heater.

The design of the outlet guarantees the supply of gas only if the device is connected to it. In addition, the gas supply is turned off if its flow through the outlet increases greatly or if the connection temperature exceeds 90 degrees Celsius.

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Integrated amplifier at 1 THz 04.11.2014

Northrop Grumman Corporation, one of the areas of specialization of which is advanced microelectronics, announced a breakthrough in the development of microwave integrated circuits.

Northrop Grumman specialists have created an integrated amplifier that includes 10 transistor stages and operates at a frequency of 1012 GHz. This is a record high. By the way, the previous world record set in 2012, equal to 850 GHz, also belonged to Northrop Grumman.

The terahertz range of electromagnetic waves is attractive for communication systems due to its high bandwidth, but its development is hampered by the lack of an element base capable of operating at such high frequencies. For comparison: modern wireless networks operate at frequencies of the order of gigahertz, that is, a thousand times less.

The Northrop Grumman chip uses high electron mobility transistors with a 25nm gate made of indium phosphide. At a frequency of 1 THz, the gain of this transistor is 10 dB, and at a frequency of 1,03 THz, it is 9 dB.

The development was made under a program funded by the US Defense Advanced Research Projects Agency (DARPA). It is the culmination of a three-phase project involving the creation of transistor circuits operating at 670 GHz, 850 GHz, and 1 THz. Within five years, all three milestones were successfully achieved by Northrop Grumman.

Northrop Grumman's achievement is said to lead to new technologies in surveillance, radar, communications, atmospheric scanning, radio astronomy and medicine.

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