Featured Research

from universities, journals, and other organizations

Pushing The Limits Of Hard Disk Storage

Date:
October 10, 2005
Source:
Ecole Polytechnique Fédérale de Lausanne
Summary:
Just how much data can we cram onto a hard disk ? In a paper appearing online today in Physical Review Letters, EPFL (Ecole Polytechnique Federale de Lausanne) Professor Harald Brune and his colleagues report what they believe to be the ultimate density limit of magnetic recording.

Just how much data can we cram onto a hard disk? In a paper appearingonline today in Physical Review Letters, EPFL (Ecole PolytechniqueFederale de Lausanne) Professor Harald Brune and his colleagues reportwhat they believe to be the ultimate density limit of magneticrecording.

His group created a self-assembled lattice of non-interactingtwo-atoms-high islands of cobalt on a single-crystal gold substrate.The islands' density -- 26 trillion islands per square inch -- is thehighest yet recorded and 200 times the bit density of current computerhard disks. The magnetic properties of the islands are the most uniformever recorded, and because the islands don't interact with each other,they can each hold one bit of data.

However, it's not a storage medium "ready to use" because theserecords were posted at the uncomfortably cold temperature of -223 C!Above this temperature, thermal excitation starts to reverse themagnetization and the information in the memory gets volatile.

Brune and his colleagues are still trying to solve this blockingtemperature problem using bi-metallic islands of 500-800 atoms that canmaintain the desired magnetic properties at room temperature.

###

On the web: http://ipn2.epfl.ch/LNS/index.htm.


Story Source:

The above story is based on materials provided by Ecole Polytechnique Fédérale de Lausanne. Note: Materials may be edited for content and length.


Cite This Page:

Ecole Polytechnique Fédérale de Lausanne. "Pushing The Limits Of Hard Disk Storage." ScienceDaily. ScienceDaily, 10 October 2005. <www.sciencedaily.com/releases/2005/10/051010095854.htm>.
Ecole Polytechnique Fédérale de Lausanne. (2005, October 10). Pushing The Limits Of Hard Disk Storage. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2005/10/051010095854.htm
Ecole Polytechnique Fédérale de Lausanne. "Pushing The Limits Of Hard Disk Storage." ScienceDaily. www.sciencedaily.com/releases/2005/10/051010095854.htm (accessed August 20, 2014).

Share This




More Matter & Energy News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Newsy (Aug. 19, 2014) — Scientists have developed a new device that mimics the way octopuses blend in with their surroundings to hide from dangerous predators. Video provided by Newsy
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) — Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com
Green Power Blooms as Japan Unveils 'hydrangea Solar Cell'

Green Power Blooms as Japan Unveils 'hydrangea Solar Cell'

AFP (Aug. 19, 2014) — A solar cell that resembles a flower is offering a new take on green energy in Japan, where one scientist is searching for renewables that look good. Duration: 01:29 Video provided by AFP
Powered by NewsLook.com
Tiny Satellites, Like The One Tossed From ISS, On The Rise

Tiny Satellites, Like The One Tossed From ISS, On The Rise

Newsy (Aug. 18, 2014) — The Chasqui I, hand-delivered into orbit by a Russian cosmonaut, is one of hundreds of small satellites set to go up in the next few years. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins