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:4/24/2014)... study of animal intelligence to-date finds that animals with bigger ... week in the journal Proceedings of the National Academy ... history of research aimed at understanding the animal mind. Specifically, ... and use tools, read social cues, or even understand basic ... of animal intelligence have focused on only one or a ...
(Date:4/24/2014)... the largest river turtle in North America, weighing in ... century. Now researchers from Florida and the University of ... but three. , Examining museum specimens and wild ... ancient reptile. , Once heavily hunted for turtle meat ... Turtle Soup in the 1960s the riverine populations ...
(Date:4/23/2014)... of bioethics experts have added "playwright" to their resumes ... grappling with an onslaught of ethical issues as genomic ... human genome was first sequenced. , Until now ... Bush have been performed for, and by, their peers ... meetings and in classrooms. With Oxford University Press, ...
Breaking Biology News(10 mins):Animals with bigger brains, broader diets have better self control 2Animals with bigger brains, broader diets have better self control 3Two new US turtle species described 2Two new US turtle species described 3Bioethicists use theatrical narratives to bridge the gap between society and science 2Bioethicists use theatrical narratives to bridge the gap between society and science 3
... the forests of Thailand have given conservationists confirmation that ... to the Wildlife Conservation Society. The footagetaken ... Forest Complex over the last yearhas revealed a cornucopia ... elephants, gaurs, sun bears, and many other species. The ...
... studying a unique collection of human skulls have shown ... occurred independently through separate evolutionary events may have actually ... Manchester and Barcelona examined 390 skulls from the Austrian ... skull is highly integrated, meaning variation in one part ...
... News media registration opened today for the American ... the largest scientific conferences of the New Year. The meeting ... and will take place at the San Diego Convention Center ... presentations on new discoveries that span science,s horizons from ...
Cached Biology News:Candid video clips from Thailand show anti-poaching efforts saving wildlife 2Human skull study causes evolutionary headache 2
(Date:1/15/2014)... Westlake Village, Calif. (PRWEB) January 15, 2014 ... cancer treatment and management through the genomic analysis of ... will offer Therapy Finder™, a web-based cancer decision support ... a reporting option with Cynvenio’s ClearID™ genomic test, Therapy ...
(Date:1/15/2014)... 15, 2014 More than 5 million ... 1 in 3 seniors will die with Alzheimer’s or ... jaw-dropping figures have shocked many Americans into looking for ... prevent these tragic age-related cognitive disorders. Jonathan Weisman, president ...
(Date:1/15/2014)... 15, 2014 Freeslate, Inc ., ... announced that Lupin Limited, one of India’s top five ... Protégé PharmD System for high throughput solid form ... focused on a wide range of quality, affordable generic ...
(Date:1/14/2014)... Diego, CA (PRWEB) January 14, 2014 ... on the products of cells grown under simulated embryonic ... international license agreement with Suneva Medical, Inc. for physician-dispensed ... (CCM). , This agreement is an amendment ...
Breaking Biology Technology:Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3
... On June 27, 2008,GeneraMedix Inc. received approval ... its Epoprostenol for Injection 1.5 mg New Drug,Application ... indicated for the long-term,intravenous treatment of primary pulmonary ... of disease in NYHA,Class III and Class IV ...
... Advanced Life Sciences,Holdings, Inc. (Nasdaq: ... the,discovery, development and commercialization of novel drugs ... respiratory diseases, today,announced that it was added ... Investment Group reconstituted its comprehensive set of ...
... July 3 Senesco,Technologies, Inc. ("Senesco" or the ... has contracted with Polyplus-transfection (Illkirch, France) to,supply Polyplus,s ... of siRNA against Factor 5A and a plasmid ... reported positive preclinical in vivo results,using its combination ...
Cached Biology Technology:GeneraMedix Inc. Receives Approval for Epoprostenol for Injection 1.5 mg 2Advanced Life Sciences Added to Russell Microcap Index 2Advanced Life Sciences Added to Russell Microcap Index 3Senesco Signs a Supply Agreement for Polyplus-transfection's Delivery System 2Senesco Signs a Supply Agreement for Polyplus-transfection's Delivery System 3Senesco Signs a Supply Agreement for Polyplus-transfection's Delivery System 4
...
Smac/DIABLO (CT) - IgG for Western Blotting, Host: Rabbit Family: Smac/DIABLO...
Mouse monoclonal [ICRF 44] to Integrin alpha M...
... The new Finnpipette Focus Long ... cone for pipetting from test ... narrow and long necked vessels. ... whatever volume you select, it ...
Biology Products: