Message-Id: <199805080718.AAA11008@dns.ccit.arizona.edu> Date: Fri, 8 May 1998 09:16:50 +0200 From: Emil Levine <mailto:E.Levine@IAEA.ORG> Subject: Re: MMP Flashcard To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
>From: Jennifer Brasher[SMTP:mailto:J.Brasher@INS.GU.EDU.AU]
>Sent: Friday, 08 May 1998 01:52
>To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
>Subject: MMP Flashcard
>
>Can anyone tell me anything about this new storage wonder transcending DVDs?
>Thanks Jennifer.
>
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>Jennifer Brasher
>Librarian (Slide Collection Supervisor/ Art Reference) EMAIL:
mailto:>j.brasher@ins.gu.edu.au > PHONE: INTERNATIONAL 61 7 3875 3130
> AUSTRALIA 07 3875 3130
> FAX: 3875 3133
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>These comments are made in a private capacity and are not necessarily the
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Subject: get ready to toss your cdrom Author: <mailto:dclanguage@bewellnet.com> at INTERNET Date: 04/05/1998 05:39 PM
thought you might find this interesting... Penny-Sized CD=20
Stephen Chou wants to shrink the size of your CD and video collection. At one-thousandth the size of a regular CD, his nano-CD could replace 30 of your music CDs with room to spare, he says. With 800 times the capacity of a standard CD, the nano-CD could revolutionize data-storage methods. =93 You can put all the information you need on a penny-sized CD,=94 Chou says.
Chou, an electrical-engineering professor at the University of Minnesota, has developed discs that can store 400GB of information, instead of the 650MB on a regular CD and 4.7GB on a DVD. =93Our density is 100 times hig= her than the best DVD,=94 Chou states.
Before the CD is created, a data mold of microscopic grooves is fashioned. The mold is then stamped onto a softened, penny-sized polymer. The bits of data, recorded as tiny pits in the molding, are stored in grooves. The data bits are 10 nanometers (or billionths of a meter) wide and 40 nanometers apart.
To read the information on the nano-CD, Chou developed a tiny silicon needle. =93The needle itself is vibrating. When you put it closer to the disc, the atomic interaction between the disc and the needle changes the vibration frequency of the needle. By interpreting this change, a computer can read the topography of the disc,=94 Chou explains. An actual player, which would probably employ voice-recognition software in its operating system, still needs to be built.
CDs can currently hold 10 minutes of high-quality video. DVDs hold 133 minutes per side, and Chou=92s penny-sized CD could hold 5 hours worth of video.
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