World’s smallest single nanotube radio 100 bln times smaller than first radioNovember 14th, 2007 - 8:13 am ICT by admin
The scientists successfully received their first FM broadcast last year - Derek and The Dominos’ “Layla” and the Beach Boys’ “Good Vibrations” transmitted from across the room.
Alex Zettl, UC Berkeley professor of physics and the team leader, said the nanoradio is currently configured just as a receiver, but it could also work as a transmitter. It could be used in any number of applications - from cell phones to microscopic devices that sense the environment and relay information via radio signals.
“The nanotube radio may lead to radical new applications, such as radio-controlled devices small enough to exist in a human’s bloodstream,” the authors wrote in a paper published online today by the journal Nano Letters.
Authors of the nanoradio paper are Zettl, graduate student Kenneth Jensen, and their colleagues in UC Berkeley’s Center of Integrated Nanomechanical Systems (COINS) and in the Materials Sciences Division at Lawrence Berkeley National Laboratory (LBNL).
In this radio, a single carbon nanotube works as an all-in-one antenna, tuner, amplifier and demodulator for both AM and FM. In comparison, a standard radio has separate components for these functions.
What makes the nanoradio a true nanoelectromechanical device is the fact that it detects radio signals in a radically new way– it vibrates thousands to millions of times per second in tune with the radio wave.
While large objects, like a stiff wire or a wooden ruler pinned at one end, vibrate at low frequencies - between tens and hundreds of times per second- the tiny nanotubes vibrate at high frequencies ranging from kilohertz (thousands of times per second) to hundreds of megaHertz (100 million times per second).
The field-emission and vibration together also demodulate the signal.
“I hate to sound like I’m selling a Ginsu knife - But wait, there’s more! It also slices and dices! - but this one nanotube does everything; it performs all radio functions simultaneously and extremely efficiently,” Zettl said. “It’s ridiculously simple - that’s the beauty of it.” (ANI)
- 'Nanoresonators' to boost cell phone connectivity - Aug 31, 2012
- Scientists weigh elusive gold atom with nanoscale - Jul 30, 2008
- Carbon nanotubes speakers to unveil secrets of deep seas - Jun 14, 2010
- New app to convert your cell phone into personal concert speaker! - Feb 24, 2011
- Nanotubes spun into threads open new possibilities in communications - Mar 16, 2009
- Scientists successfully weigh single molecule - Aug 27, 2012
- Real-time 'eco-driving' can cut fuel consumption up to 6pc - Feb 08, 2011
- New graphene study could lead to improvements in bluetooth headsets - Oct 19, 2010
- Ambika Soni against 3G-like auction for FM - Sep 14, 2010
- New digital memory storage device can store a trillion bits of data for a billion years - Jun 05, 2009
- Scientists create synthetic brain cell - Apr 25, 2011
- Scientists unlock secret of cellular communication - May 02, 2011
- Mobile battery life could last months thanks to nanotechnology - Mar 11, 2011
- Carbon nanotube device can rapidly diagnose cancer, HIV - Mar 30, 2011
- Fast, low-energy memory for MP3s, smartphones may soon be a reality - Mar 29, 2011
Tags: antenna tuner, beach boys good vibrations, carbon nanotube, derek and the dominos, derek and the dominos layla, field emission, fm broadcast, kenneth jensen, lawrence berkeley national laboratory, lbnl, materials sciences, microscopic devices, nano letters, per second, radio controlled, radio signals, standard radio, stiff wire, uc berkeley professor, wooden ruler