Navigation Links
Progress toward new storage media
Date:10/27/2008

This press release is available in German.

In this information age, increased storage capacity is a central challenge for science and technology. A team of German and Italian researchers has pursued this by exploring the concept of "nanostructured storage domains". As the scientists, led by Massimiliano Cavallini at the National Research Council (CNR) in Bologna (Italy) and Mario Ruben at the Forschungszentrum Karlsruhe (Germany), report in the journal Angewandte Chemie, they have been able to produce reliable nanopatterns of a spin-transition compound on silicon oxide chips. This is a decisive step toward a new generation of molecular storage media in which binary data are stored by the "switching" of electron spins.

Currently, computer hard drives store data by magnetizing the surface of a rotating disk. Each "storage cell" has an "address", so that stored data can be accessed directly. To increase storage capacity, the individual magnetic domains are made smaller and smaller; we are however getting close to the limit. Thermal excitation occasionally causes some of the magnetic particles to flip in the other direction. When the domains are very small, the entire cell can rapidly lose its magnetization.

To achieve higher information density, we could change to other switchable material properties, such as the transition between two spin states. For example, iron(II) compounds can exist in either a high- or a low-spin state. "Switching" (flipping) can be controlled by changes in temperature, pressure, or electromagnetic radiation.

In addition to two distinguishable states to represent 0 and 1, data storage also requires a unique "address" for each storage location that can be identified by the optical writing and reading units of the computer. This requires an interface that makes the nanoscopic spin-state transitions of the molecular switching units compatible with the microscale instrument environment. This is possible if the spin-transition compound can be put into a highly ordered micro- or nanostructure.

By using special unconventional micro- and nanolithographic techniques, the team was able to "print" a neutral iron(II) complex onto a silicon wafer in the form of very fine lines. In this process, the nanocrystals organize themselves into a preferred orientation along the line. Furthermore, the researchers were able to transfer the pattern of a recorded CD onto a film of this iron compound. This is the first proof that it is possible to produce readable logic patterns with a spin-transfer compound.

To make the stripe structures technologically useful, the switching process must be adapted to room-temperature conditions; work on this front is already at an advanced stage.


'/>"/>

Contact: Massimiliano Cavallini
m.cavallini@bo.ismn.cnr.it
39-051-639-8519
Wiley-Blackwell
Source:Eurekalert  

Related biology technology :

1. MedImmune Presents Data Highlighting its Progressive Inflammatory Disease Portfolio at the 72nd Annual Meeting of the American College of Rheumatology
2. Peregrine Pharmaceuticals Reports Progress in Its Phase II Trial of Bavituximab Plus Docetaxel in Patients With Advanced Breast Cancer
3. BioElectronics Announces Significant Progress in Canadian and International Distribution
4. DuPont Meeting Significant 2008 Milestones in Progressing Advanced Biofuels
5. Advanced Life Sciences to Host Conference Call to Update Investors on Progress of Corporate Initiatives on October 1, 2008
6. Genomic Health Announces Second Quarter 2008 Financial Results and Business Progress
7. Lorus Therapeutics Provides an Update on Progress in Virulizin(R) Development Program
8. Kendle to Host Conference Call and Webcast to Discuss DecisionLine Acquisition and Provide Update on Second Quarter Progress
9. Vermillion Announces First Quarter 2008 Financial Results and Business Progress
10. Genomic Health Announces First Quarter 2008 Financial Results and Business Progress
11. Aida Pharmaceuticals, Inc. Announces Update on Progress of Rh-Apo2L Testing
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Progress toward new storage media
(Date:2/4/2016)... Feb. 4, 2016  Sangamo BioSciences, Inc. (NASDAQ: ... today that Edward Lanphier , Sangamo,s president and ... progress of Sangamo,s ZFP Therapeutic ® development programs ... 2:40 pm ET on Thursday, February 11, 2016, at ... Conference. The conference is being held in ...
(Date:2/4/2016)... N.J. , Feb. 4, 2016  CytoSorbents ... immunotherapy leader commercializing its flagship CytoSorb® blood filter ... surgery patients around the world, announced that CEO ... present at the Source Capital Group,s 2016 Disruptive ... update on the company.  Conference ...
(Date:2/4/2016)...  Spherix Incorporated (Nasdaq: SPEX ) -- an intellectual property ... intellectual property, today provided an update on the Company,s ... of Texas and announcing that ... Partes Re-examination ("IPR") proceedings that VTech and Uniden ... initiated on only certain claims of two of the ...
(Date:2/4/2016)... ... ... Many of the engineers at FireflySci, Inc. have been manufacturing quartz and ... other cuvette manufacturers is their supercharged customer service and their extensive database of glass ... flow of inside information, they have recently revamped their manufacturing techniques to reduce lead ...
Breaking Biology Technology:
(Date:1/13/2016)... ALBANY, New York , January 13, 2016 /PRNewswire/ ... Transparency Market Research has published a new market report ... Share, Growth, Trends, and Forecast, 2015 - 2023. According to ... mn in 2014 and is anticipated to reach US$1,625.8 ... from 2015 to 2023. In terms of volume, the ...
(Date:1/11/2016)... CHICAGO , Jan. 11, 2016  higi, ... via nearly 10,000 retail locations, web and mobile, ... than $40 million from existing investors. ... will be devoted to further innovate higi,s health ... app and web portal – including expanding services ...
(Date:1/7/2016)... , Jan. 7, 2016 This BCC Research ... for biometric technologies and devices, identifying newer markets and ... various types of biometric devices. Includes forecast from 2015 ... Identify newer markets and explore the expansion of the ... Examine each type of biometric technology, determine its current ...
Breaking Biology News(10 mins):