Featured Research

from universities, journals, and other organizations

Computer Simulations Mimic Growth Of 'Dizzy Dendrites'

Date:
June 25, 2003
Source:
National Institute Of Standards And Technology
Summary:
Crystals are more than just pretty faces. Many of the useful properties associated with metal alloys or polymer blends -- like strength, flexibility and clarity -- stem from a material's specific crystal microstructure. So the more scientists know about how crystal patterns grow as a material solidifies, the better they'll be able to create new materials with specific properties.

Crystals are more than just pretty faces. Many of the useful properties associated with metal alloys or polymer blends -- like strength, flexibility and clarity -- stem from a material's specific crystal microstructure. So the more scientists know about how crystal patterns grow as a material solidifies, the better they'll be able to create new materials with specific properties.

Related Articles


In a recent issue of Nature Materials, National Institute of Standards and Technology (NIST) researchers described work with collaborators in Hungary and France using computer simulations of crystal growth to advance understanding of how foreign particles -- either additives or impurities -- affect crystal growth patterns. They found that computer simulations developed to predict the crystal growth of metal alloys matched up remarkably well with microscope images of actual crystals grown in polymer films with thicknesses far below that of a human hair.

Randomly dispersed foreign particles in both the simulation and the real materials produced what the researchers dubbed "dizzy dendrites." In both cases, the tree-like branches in the crystals tend to curve and split, instead of forming the straight, symmetric patterns typical of pure crystals. Further simulations indicated that rotating the particles in concert during the solidification process produced spiraling dendrites.

Alternating strips of particles with first one and then another orientation produced zig-zagging patterns. The researchers suggest that experimentalists also may be able to reproduce the crystal patterns seen in these more complex simulations.

Possible methods include imprinting the crystal growing surface with a patterned roller (like those used to make a patterned pie crust) or using external electromagnetic fields or laser pulses to orient particles in specific directions.


Story Source:

The above story is based on materials provided by National Institute Of Standards And Technology. Note: Materials may be edited for content and length.


Cite This Page:

National Institute Of Standards And Technology. "Computer Simulations Mimic Growth Of 'Dizzy Dendrites'." ScienceDaily. ScienceDaily, 25 June 2003. <www.sciencedaily.com/releases/2003/06/030625090002.htm>.
National Institute Of Standards And Technology. (2003, June 25). Computer Simulations Mimic Growth Of 'Dizzy Dendrites'. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2003/06/030625090002.htm
National Institute Of Standards And Technology. "Computer Simulations Mimic Growth Of 'Dizzy Dendrites'." ScienceDaily. www.sciencedaily.com/releases/2003/06/030625090002.htm (accessed January 30, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Reuters - Innovations Video Online (Jan. 30, 2015) — A nanosensor that mimics the oral effects and sensations of drinking wine has been developed by Danish and Portuguese researchers. Jim Drury saw it in operation. Video provided by Reuters
Powered by NewsLook.com
Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

RightThisMinute (Jan. 29, 2015) — If your car has an "Insane Mode" then you know it&apos;s fast. Well, these unsuspecting passengers were in for one insane ride when they hit the button. Tesla cars are awesome. Video provided by RightThisMinute
Powered by NewsLook.com
Now Bill Gates Is 'Concerned' About Artificial Intelligence

Now Bill Gates Is 'Concerned' About Artificial Intelligence

Newsy (Jan. 29, 2015) — Bill Gates joins the list of tech moguls scared of super-intelligent machines. He says more people should be concerned, but why? Video provided by Newsy
Powered by NewsLook.com
Senate Passes Bill for Keystone XL Pipeline

Senate Passes Bill for Keystone XL Pipeline

AP (Jan. 29, 2015) — The Republican-controlled Senate has passed a bipartisan bill approving construction of the Keystone XL oil pipeline. (Jan. 29) Video provided by AP
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:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

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