Using Simulation to Predict Resistivity in Nanodevices

 
Post new topic   Reply to topic    Institute of Nanotechnology Forum Index -> Nanoelectronics
View previous topic :: View next topic  
Author Message
grantnano
Site Admin


Joined: 03 Oct 2005
Posts: 432

PostPosted: Thu Jan 19, 2006 10:18 am    Post subject: Using Simulation to Predict Resistivity in Nanodevices Reply with quote

NIST and GWU Researchers Use A Simulation Program to Predict Resistivity in Nanodevices

As nanoscale circuits continue to shrink, electrical resistivity increases in the wiring and limits the maximum circuit speed. A new simulation program developed by researchers at the National Institute of Standards and Technology (NIST) and George Washington University (GWU) can be used to predict such increases with greater input flexibility and model accuracy than other methods. The software program is expected to help the semiconductor industry design and test devices more efficiently and with greater cost-effectiveness.

On average, an electron can travel only 39 nanometers in pure, bulk copper at room temperature before it is scattered by thermal vibrations of the copper atoms. But, as the dimensions of the wiring shrink, additional scattering by surfaces and grain boundaries within the metal lead to undesirable increases in resistivity. The NIST/GWU computer program, described in a recent paper in Microelectronics Reliability,* enables users to examine how these additional mechanisms alter the resistivity of the thin, narrow metal lines that make up the circuit wiring.

As described in the journal article, NIST researchers used the simulation program to demonstrate that, at critical nanoscale dimensions, electron scattering from surfaces and grain boundaries have effects that are interdependent. This interdependence could not be predicted using methods previously available. The finding has implications for both achievable circuit speed and electrical measurements of the dimensions of thin, narrow lines.

Source: National Institute of Standards and Technology (NIST).

URL: http://www.nist.gov/public_affairs/techbeat/tb2006_0117.htm#nano

This story was posted on 18 January 2006.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Institute of Nanotechnology Forum Index -> Nanoelectronics All times are GMT
Page 1 of 1
 

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2002 phpBB Group