Navigation Links
Silicon oxide circuits break barrier
Date:8/31/2010

Rice University scientists have created the first two-terminal memory chips that use only silicon, one of the most common substances on the planet, in a way that should be easily adaptable to nanoelectronic manufacturing techniques and promises to extend the limits of miniaturization subject to Moore's Law.

Last year, researchers in the lab of Rice Professor James Tour showed how electrical current could repeatedly break and reconnect 10-nanometer strips of graphite, a form of carbon, to create a robust, reliable memory "bit." At the time, they didn't fully understand why it worked so well.

Now, they do. A new collaboration by the Rice labs of professors Tour, Douglas Natelson and Lin Zhong proved the circuit doesn't need the carbon at all.

Jun Yao, a graduate student in Tour's lab and primary author of the paper to appear in the online edition of Nano Letters, confirmed his breakthrough idea when he sandwiched a layer of silicon oxide, an insulator, between semiconducting sheets of polycrystalline silicon that served as the top and bottom electrodes.

Applying a charge to the electrodes created a conductive pathway by stripping oxygen atoms from the silicon oxide and forming a chain of nano-sized silicon crystals. Once formed, the chain can be repeatedly broken and reconnected by applying a pulse of varying voltage.

The nanocrystal wires are as small as 5 nanometers (billionths of a meter) wide, far smaller than circuitry in even the most advanced computers and electronic devices.

"The beauty of it is its simplicity," said Tour, Rice's T.T. and W.F. Chao Chair in Chemistry as well as a professor of mechanical engineering and materials science and of computer science. That, he said, will be key to the technology's scalability. Silicon oxide switches or memory locations require only two terminals, not three (as in flash memory), because the physical process doesn't require the device to hold a charg
'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Innovalight Establishes New Record With Silicon Ink Solar Cells
2. Silicon with afterburners: Process developed at Rice could be boon to electronics manufacturer
3. University of Leicester researchers discover new fluorescent silicon nanoparticles
4. Lipid peroxides -- more sophisticated than their reputation
5. ARPA-E funding supports research on carbon dioxide removal from flue gases
6. High levels of carbon dioxide threaten oyster survival
7. New carbon dioxide emissions model
8. Graphene oxide gets green
9. Warmer climate entails increased release of carbon dioxide by inland lakes
10. Global model confirms: Cool roofs can offset carbon dioxide emissions and mitigate global warming
11. Solid oxide fuel cells getting closer to the market
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/14/2015)... Conn. , April 14, 2015 NXT-ID, ... a biometric authentication company focused on the growing mobile ... been nominated for the 2015 New York Design Awards ... The Design100, New York City Design Awards are part ... based on over 2,500 ratings from the marketplace, industry ...
(Date:4/10/2015)... 2015 Research and Markets ( ... "Security Competitive Profiles - NEC" report to their ... NEC will continue to supply a range of IT ... a company focus on the development of a Big ... opportunities in the Asia-Pacific region ...
(Date:4/6/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... focused on the growing mobile commerce market, announced ... for MINIATURE, MULTI-PURPOSE ANTENNA METHOD AND SYSTEM ... NXT-ID introduces a new revolutionary method and system ... use of miniature antenna modules for multiple purposes ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 2NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 3NEC Security Competitive Profile 2015 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 3NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 4
... any nervous first-time mother will confirm, the initial three months ... are reluctant to inform their friends or colleagues that they ... less well known that horses suffer from similar problems, with ... first five weeks. The explanation is still unclear but may ...
... in this month,s issue of Pediatrics In Review ... stress the importance of physicians recognizing that many mothers ... accurate health assessments for both mother and child. ... a standardized risk assessment of herbal supplement use during ...
... octopus and cuttlefishtransform their shape based on environment, ... For decades, researchers have worked toward mimicking similar ... have significant implications in the medical arena. ... have demonstrated such a biomimetic response using hydrogelsa ...
Cached Biology News:Helping horses come to term 2Study finds physicians need to better recognize use of herbal supplements while breastfeeding 2Light that moves and molds gels 2
(Date:5/5/2015)... (PRWEB) May 05, 2015 VetStem ... Science Animal Health, Jeffrey Schaffer, DVM, as Director ... over 15 years of experience in the veterinary ... great addition to our veterinarian lead organization”. ... explains. “Dr. Schaffer will be responsible for all ...
(Date:5/5/2015)... , May 05, 2015 Research ... has announced the addition of the ... to their offering. Macromolecules which ... undergo separation or are broken into smaller ... products. This separation requires various advanced systems ...
(Date:5/5/2015)... 5, 2015  Tikcro Technologies Ltd. (OTCQB: TIKRF) ... continue trading on OTCQB  Marketplace, the market for ... allows for a continuous public market for trading ... real-time quotes and market information on us through ... Marketplace includes U.S. and international companies in venture ...
(Date:5/5/2015)... May 5, 2015  Renova™ Therapeutics, a biopharmaceutical ... failure and other chronic diseases, has engaged RAND ... designed to reflect the healthcare patterns of multiple ... will be used to characterize the impact the ... on those groups of patients and the overall ...
Breaking Biology Technology:Leading Regenerative Veterinary Medicine Company, VetStem Biopharma announces the addition of Dr Jeffrey Schaffer as the Director of Veterinary Professional Services. 2Global Separation Systems Market in Biotechnology 2015-2019 - Trends and Forecasts for the $28 Billion Market 2Tikcro Technologies Announces Approval to Continue Trading on OTCQB 2RAND Health Advisory Services modeling heart failure patient outcomes to inform potential impact of Renova Therapeutics lead product candidate 2RAND Health Advisory Services modeling heart failure patient outcomes to inform potential impact of Renova Therapeutics lead product candidate 3
... United Arab Emirates   is the First Country in ... Allergy Sufferers - Nycomed, a Takeda company, ... in the United Arab Emirates for the treatment of allergic ... adults and adolescents over the age of 12.   ...
...  In this highly-anticipated event – " Nutritional Medicine ... from a Trusted Expert" , Dr. Gaby will ... nutritional medicine including: Can multivitamins increase mortality? Will ... effective than ubiquininone for congestive heart failure? Dr. ...
... Mass. - March 8, 2012 - Researchers in applied ... of advanced materials, called metamaterials, that bend light in ... infrared light, the Harvard team has used extremely short ... tiny silver dots within a material. Those suspended metal ...
Cached Biology Technology:Nycomed, a Takeda Company, Launches Omnaris® Nasal Spray in the UAE for the Treatment of Allergic Rhinitis 2Nycomed, a Takeda Company, Launches Omnaris® Nasal Spray in the UAE for the Treatment of Allergic Rhinitis 3Nycomed, a Takeda Company, Launches Omnaris® Nasal Spray in the UAE for the Treatment of Allergic Rhinitis 4Dr. Alan Gaby to Present Nutritional Medicine Updates in a Nationwide Tour 2Metamaterials may advance with new femtosecond laser technique 2
... The expertise that made the original Gene Pulser ... system available has been applied in the Gene ... The modular design of the Gene Pulser II ... accessory that has the widest range of settings ...
Caliper offers a wide array of standard LabChip products designed to be used in combination with our AMS 90 and LabChip 3000 microfluidic platforms....
... submicron range are part of your production ... of particle size is important to you. ... detect the component populations in your sample ... Analyzer uses Photon Correlation Spectroscopy (PCS) , ...
...
Biology Products: