- About Us
- Nano-Social Network
- Nano Consulting
- My Account
A researcher at North Carolina State University has developed a computer chip that can store an unprecedented amount of data - enough to hold an entire library's worth of information on a single chip.
By Matt Shipman
The new chip stems from a breakthrough in the use of nanodots, or nanoscale magnets, and represents a significant advance in computer-memory technology.
"We have created magnetic nanodots that store one bit of information on each nanodot, allowing us to store over one billion pages of information in a chip that is one square inch," says Dr. Jay Narayan, the John C. Fan Distinguished Chair Professor of Materials Science and Engineering at NC State and author of the research.
The breakthrough is that these nanodots are made of single, defect-free crystals, creating magnetic sensors that are integrated directly into a silicon electronic chip. These nanodots, which can be made uniformly as small as six nanometers in diameter, are all precisely oriented in the same way - allowing programmers to reliably read and write data to the chips.
The chips themselves can be manufactured cost-effectively, but the next step is to develop magnetic packaging that will enable users to take advantage of the chips - using something, such as laser technology, that can effectively interact with the nanodots.
The research, which was funded by the National Science Foundation, was presented as an invited talk April 7 at the 2011 Materials Research Society Spring Meeting in San Francisco.
NC State's Department of Materials Science and Engineering is part of the university's College of Engineering.
Note to editors: The study abstract follows.
"Self Assembly of epitaxial magnetic nanostructures"
Author: J. Narayan, North Carolina State University
Presented: April 7, 2010, 2011 MRS Spring Meeting, San Francisco
Abstract: This talk focuses on self-assembly processing of magnetic nanodots such as Ni, Ni-Pt, Fe-Pt during thin film growth by pulsed laser deposition. This self-assembly can be extended from two-dimensional to three-dimensional structures by controlling stresses/strains in the layers of composite structures. Magnetic properties are found to be a strong function of size, shape, orientation and chemical ordering. The primary focus of this talk is on epitaxial orientation of nanodots and integration of microelectronic/nanoelectronic devices on Si(100)(1). The epitaxial orientation is controlled by TiN buffer layer grown epitaxially on Si(100), and results compared with randomly oriented nanodots formed using amorphous alumina buffer. The epitaxial structures (Ni, Ni-Pt, Fe-Pt)/TiN/Si(100) involve lattice misfit ranging from 8% to 22%, which can be handled by our domain epitaxy paradigm (2). The DME paradigm involves matching of integral multiples of lattice planes across the interface, as the strain relaxation occurs by dislocations which represent either missing or extra planes (2). We discuss the optimization of structure and atomic ordering in Ni-Pt and FePt structures and correlations with magnetic properties by controlling thin film processing parameters and annealing conditions.
For more information, please click here
Dr. Jay Narayan
Copyright © North Carolina State UniversityIf you have a comment, please Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
|Related News Press|
News and information
AIM Photonics Welcomes Coventor as Newest Member: US-Backed Initiative Taps Process Modeling Specialist to Enable Manufacturing of High-Yield, High-Performance Integrated Photonic Designs March 16th, 2017
Oxford Nanoimaging report on how the Nanoimager, a desktop microscope delivering single molecule, super-resolution performance, is being applied at the MRC Centre for Molecular Bacteriology & Infection November 22nd, 2016
Argon is not the 'dope' for metallic hydrogen March 24th, 2017
Harris & Harris Group Issues Its Financial Statements as of December 31, 2016, Posts Its Annual Shareholder Letter, And Will Host a Conference Call for Shareholders on Friday, March 17, 2017 March 15th, 2017
First ever blueprint unveiled to construct a large scale quantum computer February 3rd, 2017
Chiral quantum optics: A new research field with bright perspectives January 31st, 2017
UC researchers use gold coating to control luminescence of nanowires: University of Cincinnati physicists manipulate nanowire semiconductors in pursuit of making electronics smaller, faster and cheaper March 17th, 2017
A SOI wafer is a suitable substrate for gallium nitride crystals: Improved characteristics in power electronics and radio applications can be achieved by using a SOI wafer for gallium nitride growth March 4th, 2017
Particle Works creates range of high performance quantum dots February 23rd, 2017