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Toward world's smallest radio: nano-sized detector turns radio waves into music
October 18, 2007Researchers in California today (Oct. 17) report development of the world's first working radio system that receives radio waves wirelessly and converts them to sound signals through a nano-sized detector made of carbon nanotubes. The "carbon nanotube radio" device is thousands of times smaller than the diameter of a human hair. The development marks an important step in the evolution of nano-electronics and could lead to the production of the world's smallest radio, the scientists say. Their findings appeared online today and are scheduled for publication in the Nov. 14 print edition of ACS' Nano Letters, a monthly journal.
Peter Burke and Chris Rutherglen developed a carbon nanotube "demodulator" that is capable of translating AM radio waves into sound. In a laboratory demonstration, the researchers incorporated the detector into a complete radio system and used it to successfully transmit classical music wirelessly from an iPod to a speaker several feet away from the music player.
Although other researchers have developed nano-sized radio wave detectors in the past, the current study marks the first time that a nano-sized detector has been demonstrated in an actual working radio system, the scientists say. The study demonstrates the feasibility of making other radio components at the nanoscale in the future and may eventually lead to a "truly integrated nanoscale wireless communications system," they say. Such a device could have numerous industrial, commercial, medical and other applications.
American Chemical Society
American Chemical Society
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Radio Current Events and Radio News RSSTunnel vision
Criminals of all kinds are digging tunnels along the U.S. border at a fast and furious pace. Of every tunnel ever discovered by U.S. border patrol agents, 60 percent have been found in the last three years. Agents spot a new one every month.
ORNL finding could help electronics industry enter new phase
Electronic devices of the future could be smaller, faster, more powerful and consume less energy because of a discovery by researchers at the Department of Energy's Oak Ridge National Laboratory.
Gene therapy technique thwarts cancer by cutting off tumor blood supply
University of Florida researchers have come up with a new gene therapy method to disrupt cancer growth by using a synthetic protein to induce blood clotting that cuts off a tumor's blood and nutrient supply.
Radio telescope images reveal planet-forming disk orbiting twin suns
Astronomers are announcing today that a sequence of images collected with the Smithsonian's Submillimeter Array (SMA) clearly reveals the presence of a rotating molecular disk orbiting the young binary star system V4046 Sagittarii.
Wildlife Conservation Society supports world's first study of egg-laying mammal
A Wildlife Conservation Society research intern working in the wilds of Papua New Guinea has successfully completed what many other field biologists considered "mission impossible"-the first study of a rare egg-laying mammal called the long-beaked echidna.
Radio telescopes extend astronomy's best 'yardstick'
Radio astronomers have directly measured the distance to a faraway galaxy, providing a valuable "yardstick" for calibrating large astronomical distances and demonstrating a vital method that could help determine the elusive nature of the mysterious Dark Energy that pervades the Universe.
Fog lifted on 'dark' gamma-ray bursts, mysterious counterparts to bursts with an afterglow
Gamma-ray bursts, with their ability to pierce through gas and dust to shine brightly across the universe, are revealing areas of intense star formation and stellar death where astronomers have been unable to look - the dusty corners of otherwise dust-free galaxies.
Keck Study Sheds New Light on 'Dark' Gamma-ray Bursts
Gamma-ray bursts are the universe's biggest explosions, capable of producing so much light that ground-based telescopes easily detect it billions of light-years away.
Toward cheaper imaging systems for identifying concealed weapons on the human body
Electrical engineers from UC San Diego have created high-performance W-Band silicon-germanium (SiGe) radio frequency integrated circuits (RFICs) for passive millimeter-wave imaging.
Drawing inspiration from nature to build a better radio
MIT engineers have built a fast, ultra-broadband, low-power radio chip, modeled on the human inner ear, that could enable wireless devices capable of receiving cell phone, Internet, radio and television signals.
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Sony ICF38 Portable AM/FM Radio (Black) by Sony AM/FM Tuner --- gives you access to AM/FM radio.High Power/Good Sound Output --- makes this an excellent portable for all-around use, at home and away. Ideal radio to have around the house during severe weather or power outages. LED Tuning Indicator --- helps provide precise station tuning even in dim light. Tone Control Switch --- lets you adjust high/low balance for most pleasing sound. Built-In Carrying Handle --- for easy portability. 3 5/8" Speaker --- reproduces a wide range of sound from high to low frequencies. Earphone Jack --- for personal listening. Operates on Batteries or AC --- with 4 "AA" batteries, or on AC with built-in power cord. |
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Sony ICF-S10MK2 Pocket AM/FM Radio, Silver by Sony Take me out to the ball game... If you can't get there, a radio is the next best thing. Even if you made it to the stadium, the radio provides commentary that you wouldn't ordinarily hear. The Sony ICFS10MK2 Pocket AM/FM Radio lets you enjoy the wide range of radio programming more conveniently. Tune in to sports, news, commentary, talk, and music. Listen anywhere with the built-in speaker for earphone jack, while you carry it around in your pocket. It's sized to be taken anywhere! Powered by 3V DC current or 2 AA batteries Carrying strap Color - Silver Weight - 7 oz (202g) with batteries Dimensions(WxHxD) - 2-7/8 x 4-3/4 x 1-3/16 (71 x 118.5 x 30mm) |
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Sony ICF-C218 Automatic Time Set Clock Radio (Black) by Sony Appealing Design stylish basic design blends into your room's decor |
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Coby CX90BLK Digital Pocket AM/FM Radio, Black by Coby Coby CX90BLK digital pocket AM/FM radio, digital display with backlight, digital AM/FM tuner, dynamic bass boost system (DBBS), 20-station preset memory(10 AM, 10 FM), hold switch prevents accidental key presses, clock function, 3.5mm headphone jack, black |
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Sony SRF-59 FM/AM Radio Walkman with Sony MDR Headphones by Sony Whether you like music or sports, you can have hours of listening pleasure with this portable AM/FM radio from Sony. The compact design is lightweight and unobtrusive so you can take it anywhere, and the provided belt clip is handy when youM-^Rre exercising. The local/distant (DX) switch allows for optimal reception in most areas and it achieves all this with a single M-^SAAM-^T battery! |
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Radio Starring: Cuba Gooding Jr., Ed Harris, Debra Winger, S. Epatha Merkerson, Alfre Woodard Directed By: Michael Tollin Football coach Harold Jones (Harris) befriends Radio (Gooding), a mentally-challenged man who becomes a student at T.L. Hanna High School in Anderson, South Carolina. Their friendship extends over several decades, where Radio transforms from a shy, tormented man into an inspiration to his community. |
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Sangean DT-210 AM/FM Pocket-Size Digital Radio by Sangean Sangean DT210 Pocket Radio - Keep up-to-date on the latest news, weather, traffic, sports scores, & much much more with this ultra-portable pocket radio from Sangean! This radio is so portable, it can fit into your shirt pocket! Built-in Speaker Low Battery Indicator Stereo/Mono Switch DBB (Deep Bass Boost) Includes - removable belt clip, stereo earbud headphones, & trailing antenna Size - 2.4 x 1 x 4 Weight - 3.85 oz. |
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Sony ICF-C318 Automatic Time Set Clock Radio with Dual Alarm (Black) by Sony Stylish Design takes up a minimum of space on the nightstand, desk or dresser. Visible 0.9" Green LED allows the large size numerals to be seen easily, even at night. |
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Bosch PB10-CD Advanced Power Job Site Radio with CD Player and Remote Control by Bosch The Bosch Power Box changed the face of job site entertainment forever. Now, Bosch Power Tools and Accessories announces the Power Box Advanced (PB10-CD), with a new multi-function keychain remote control, enhanced sound, improved reception and all the innovative features that made it the world’s number one job site radio/CD player and power center. New features like a multi-function keychain remote control, enhanced sound, improved reception and more make the Power Box Advanced another great leap in the evolution of jobsite entertainment and utility. Professionals and serious do-it-yourselfers will continue to appreciate the Power Box’s 4-way GFCI power outlet, 12-volt outlet perfect for charging cell phones and two-way radios, AM/FM digital radio, CD player and auxiliary jack for... |
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Sony ICF-SW7600GR AM/FM Shortwave World Band Receiver with Single Side Band Reception by Sony AM (LW/MW/SW) & FM stereo reception / 10-key direct access tuning / World time clock with dual alarm / 100 station memory presets |
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