Navigation Links
Small ... smaller ... smallest? ASU researchers create molecular diode
Date:10/13/2009

Recently, at Arizona State University's Biodesign Institute, N.J. Tao and collaborators have found a way to make a key electrical component on a phenomenally tiny scale. Their single-molecule diode is described in this week's online edition of Nature Chemistry.

In the electronics world, diodes are a versatile and ubiquitous component. Appearing in many shapes and sizes, they are used in an endless array of devices and are essential ingredients for the semiconductor industry. Making components including diodes smaller, cheaper, faster and more efficient has been the holy grail of an exploding electronics field, now probing the nanoscale realm.

Smaller size means cheaper cost and better performance for electronic devices. The first generation computer CPU used a few thousand transistors, Tao says noting the steep advance of silicon technology. "Now even simple, cheap computers use millions of transistors on a single chip."

But lately, the task of miniaturization has gotten much harder, and the famous dictum known as Moore's lawwhich states that the number of silicon-based transistors on a chip doubles every 18-24 monthswill eventually reach its physical limits. "Transistor size is reaching a few tens of nanometers, only about 20 times larger than a molecule," Tao says. "That's one of the reasons people are excited about this idea of molecular electronics."

Diodes are critical components for a broad array of applications, from power conversion equipment, to radios, logic gates, photodetectors and light-emitting devices. In each case, diodes are components that allow current to flow in one direction around an electrical circuit but not the other. For a molecule to perform this feat, Tao explains, it must be physically asymmetric, with one end capable of forming a covalent bond with the negatively charged anode and the other with the positive cathode terminal.

The new study compares a symmetric molecule wit
'/>"/>

Contact: Joe Caspermeyer
joseph.caspermeyer@asu.edu
480-727-0369
Arizona State University
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Imagenetix Inc. to Present at Noble Small Cap Financial Conference on August 21, 2007
2. FDA Approves ACAM2000(TM) Vaccine for Protection Against Smallpox
3. Exelixis Reports Encouraging Interim Data From a Phase 2 Trial of XL647 as First-Line Therapy for Non-Small Cell Lung Cancer
4. Stimuvax(R) Phase II data highlight three-year survival results for patients with non-small cell lung cancer
5. New technique producing small things in large quantities
6. Small Bone Innovations Introduces the Artelon(R) STT Spacer to Increase Treatment Options for Thumb Arthritis
7. Cell Therapeutics, Inc. (CTI) Receives SPA Approval from FDA and Launches Gender-Specific Phase III Trial for Advanced Non-Small Cell Lung Cancer
8. Small Bone Innovations Introduces New Distal Radius Plating System to Repair Complex Fractures
9. Cepheid to Present at William Blair Small-Cap Growth Stock Conference
10. Government Expands Trial With IMVAMUNE(R) Smallpox Vaccine in Persons With Atopic Dermatitis/Eczema
11. Poniard Pharmaceuticals Announces European Commission Grants Orphan Medicinal Product Designation to Picoplatin for Treatment of Small Cell Lung Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Small ... smaller ... smallest? ASU researchers create molecular diode
(Date:7/29/2015)... 29, 2015 US-Australian drug discovery company, Novogen ... it is committed to progressing its ground-breaking technology platforms ... and to ensure the Company delivers the best value ... Iain Ross , said the Company currently had an ... programs, discovery programs and academic partnerships and initiatives, and ...
(Date:7/29/2015)... , July 29, 2015 /PRNewswire/ - BioAmber Inc. (NYSE: ... the Company,s Chief Financial Officer has resigned.  The Company ... Financial Officer who retired in December 2014, as full ... a permanent successor.     Andy Ashworth ... and ensure a smooth transition.  Andy was the Company,s ...
(Date:7/29/2015)... , July 29, 2015  AsureQuality and Ubiquitome ... testing for applications in food and primary production ... powered real-time PCR device, the Freedom4. ... through to the supermarket shelf for producers, processors ... involvement in animal disease control and pest management ...
(Date:7/29/2015)... , July 29, 2015 ... announced the addition of the "Global Biosimilars ... offering. The Global Biosimilars Market, 2015 ... the rapidly growing biosimilars market. With the blockbuster ... to minimize costs, biosimilars are being viewed as ...
Breaking Biology Technology:Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 3Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 4Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 5Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 6Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 7Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 8Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 9Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 10BioAmber Announces Change in Chief Financial Officer 2BioAmber Announces Change in Chief Financial Officer 3AsureQuality and Ubiquitome Partner on Applications for Mobile Molecular Food Safety Testing 2Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 2Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 3
... zinc oxide (ZnO) are among the most technologically ... in optoelectronic elements such as blue lasers (hence ... also finds many uses in optoelectronics and sensors. ... made of these materials have shown a plethora ...
... Cell Assurance, Inc. (Pink Sheets: SCLZ) announced ... the Alexandria Innovation Center in Jupiter, Florida to open its ... Assurance represents an integral step for the Company to begin ... with developing potential cellular treatment protocols, stem cell based IP, ...
... developing a new class of "plasmonic metamaterials" as ... ultrapowerful microscopes and computers, improved solar cells, and ... could make possible "nanophotonic" devices for numerous applications, ... and computer engineering at Purdue University. Unlike ...
Cached Biology Technology:Nanowires exhibit giant piezoelectricity 2Nanowires exhibit giant piezoelectricity 3Stem Cell Assurance to Open New Laboratory Facility in Jupiter, Florida 2New materials may bring advanced optical technologies, cloaking 2
(Date:6/30/2015)... , June 30, 2015 Genisphere ... as CEO to help further develop Genisphere,s therapeutics capabilities ... partnering experience, having spent much of the last 25 ... Amgen, Baxter Bioscience, and Johnson & Johnson. Tom started ... Technology and Biotech Corporate Finance. He graduated from Dartmouth ...
(Date:6/25/2015)... , June 25, 2015 ... Sensors Market by Type (Swipe & Area), Technology, Material ... Government, Healthcare, Commercial Security & Others) & Geography ... by marketsandmarkets, the said market is expected to ... of 17.1%. Browse 76 market ...
(Date:6/24/2015)... NEW YORK , June 24, 2015 ... favorable rate. The major drivers for the market include ... increasing number of new drug launches. Over the years, ... has increased. Between 2001 and 2010, the FDA approved ... addition, according to WIPO, Europe ...
Breaking Biology News(10 mins):Genisphere Appoints New CEO, Thomas Bliss 2Genisphere Appoints New CEO, Thomas Bliss 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 3Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 4
... Illinois at Champaign-Urbana have found that people employed in ... Uganda are exchanging gastrointestinal bacteria ?specifically Escherichia coli ?with ... strains migrating to chimps are resistant to antibiotics used ... appear in the April 2007 issue of Biological Conservation ...
... Researchers from Biotech Research & Innovation Centre (BRIC) at University ... regulate the function of stem cells. The results are published ... including human beings, consist of a number of specialised cell ... cell; the embryonic stem cell. Stem cells can develop into ...
... for improved study of hepatitis C virus by devising ... patient-isolated virus in nontransformed hepatocytes, instead of culture-adapted virus ... by Lázaro et al, "Hepatitis C virus replication in ... the February issue of The American Journal of Pathology. ...
Cached Biology News:E. coli bacteria migrating between humans, chimps in Ugandan park 2E. coli bacteria migrating between humans, chimps in Ugandan park 3New culture method for hepatitis C virus uses primary hepatocytes and patient serum 2
Eliminate electrical interference from any analog signal, without filtering. Ideal for electrophysiology applications like EKG, EMG, and EEGs. Removes 50/60hz noise and harmonics caused by grounding ...
Buffer used for mitocapture assays....
... CyScribe GFX Purification Kit, 50 purifications. ... cDNA probesProvides efficient removal of unincorporated ... reactions with superior yields of labeled ... purification of cDNA labeled by either ...
Concentration: 1mg/ml. Antigen: Propidium Iodide ...
Biology Products: