Home > News > Using quantum mechanics to turn molecules into transistors
September 24th, 2007
Using quantum mechanics to turn molecules into transistors
Abstract:
Transistors are the fundamental building blocks of our everyday modern electronics; they are the tiny switches that process the ones and zeroes that make up our digital world. Transistors control the flow of electricity by switching current on or off and by amplifying electrical signals in the circuitry that governs the operation of our computers, cellular phones, iPods and any other electronic device you can think of. The first transistor used in commercial applications was in the Regency TR-1 transistor radio, which went on sale in 1954 for $49.95, that's over $375 in today's dollars (for everyone in the iPod generation - watch this fascinating 1955 video clip artifact how the first transistor radio was hand built). While the first transistors were over 1 centimeter in diameter, the smallest transistors today are just 30 nanometers thick - three million times smaller. This feat would be equivalent to shrinking the 509-meter tall Taipei 101 Tower, currently the tallest building in the world, to the size of a 1.6 millimeter tall grain of rice. The 32nm microprocessor Intel plans to introduce in 2009 will pack a whopping 1.9 billion transistors. However, current microprocessor technology is quickly approaching a physical barrier. Switching the current by raising and lowering the electron energy barrier generates heat, which becomes a huge problem as device densities approach the atomic limit. An intriguing - and technologically daunting - alternative would be to exploit the wave nature of the electron, rather than its particle properties, to control current flow on the nanoscale. Such a device, called the Quantum Interference Effect Transistor (QuIET), has been proposed by researchers in Arizona. This device could be as small as a single benzene molecule, and would produce much less heat than a conventional field effect transistor.
Source:
nanowerk.com
Related News Press |
Chip Technology
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024
HKUST researchers develop new integration technique for efficient coupling of III-V and silicon February 16th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Quantum nanoscience
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
Optically trapped quantum droplets of light can bind together to form macroscopic complexes March 8th, 2024
Bridging light and electrons January 12th, 2024
'Sudden death' of quantum fluctuations defies current theories of superconductivity: Study challenges the conventional wisdom of superconducting quantum transitions January 12th, 2024
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||