Featured Research

from universities, journals, and other organizations

NYU Researchers Explain How Organic Molecules Bind To Semiconductor Surfaces

Date:
May 11, 2005
Source:
New York University
Summary:
Chemists at New York University have elucidated a mechanism by which organic molecules attach to semiconductor surfaces, a finding that has implications for the semiconductor industry. The industry has sought ways to exploit the attachment process for a variety of purposes. The findings, along with a review of the methodology employed in the study, appear in the latest issue of the Proceedings of the National Academy of Sciences and build on studies published by the same team in the Journal of the American Chemical Society.

Snapshots illustrating the products formed by the addition of an organic molecule (butadiene) to a silicon surface. Green spheres denote carbon, white spheres denote hydrogen, blue spheres denote silicon, grey spheres and blue surfaces denote centers of high electron density, and red spheres denote local positive charge.
Credit: Image courtesy of New York University

Chemists at New York University have elucidated a mechanism by which organic molecules attach to semiconductor surfaces, a finding that has implications for the semiconductor industry. The industry has sought ways to exploit the attachment process for a variety of purposes. The findings, along with a review of the methodology employed in the study, appear in the latest issue of the Proceedings of the National Academy of Sciences and build on studies published by the same team in the Journal of the American Chemical Society.

Mark Tuckerman, an associate professor in NYU's Department of Chemistry and its Courant Institute of Mathematical Sciences, along with graduate student Peter Minary and postdoctoral researcher Radu Iftimie, examined how a butadiene, a particular organic molecule, binds to a particular silicon surface using first-principles computer-based models (Iftimie is now an assistant professor at the University of Montreal, and Minary is a postdoctoral researcher at Stanford University).

The researchers were able to identify four principal products that a butadiene can form when binding to the particular silicon surface they studied. These products had been observed independently in experiments performed elsewhere. More importantly, the researchers were able to rationalize this product distribution with a unified mechanistic picture that addresses a long-standing controversy about the reactions they studied. This mechanism could be used to predict how other organic molecules will attach to the surface and what products might be expected.

The researchers also explored a process of importance in lithography, or surface patterning, wherein they examined how an organic molecule comes off a surface. The process is crucial to the production of computer chips because it requires superimposing surface patterns multiple times with pinpoint accuracy. Specifically, they "reverse engineered" an organic molecule using only their computer model that was found to undergo the reverse reaction--i.e., detachment from the surface--more easily than the original butadiene used in the attachment studies. This finding suggests that the reaction chemistry at the semiconductor surface can be controlled by custom designing or tailoring molecules that exhibit specific desired properties in the reactions they undergo.


Story Source:

The above story is based on materials provided by New York University. Note: Materials may be edited for content and length.


Cite This Page:

New York University. "NYU Researchers Explain How Organic Molecules Bind To Semiconductor Surfaces." ScienceDaily. ScienceDaily, 11 May 2005. <www.sciencedaily.com/releases/2005/05/050509102555.htm>.
New York University. (2005, May 11). NYU Researchers Explain How Organic Molecules Bind To Semiconductor Surfaces. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2005/05/050509102555.htm
New York University. "NYU Researchers Explain How Organic Molecules Bind To Semiconductor Surfaces." ScienceDaily. www.sciencedaily.com/releases/2005/05/050509102555.htm (accessed July 28, 2014).

Share This




More Matter & Energy News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Carbon Trap: US Exports Global Warming

The Carbon Trap: US Exports Global Warming

AP (July 28, 2014) AP Investigation: As the Obama administration weans the country off dirty fuels, energy companies are ramping-up overseas coal exports at a heavy price. (July 28) Video provided by AP
Powered by NewsLook.com
Shipping Crates Get New 'lease' On Life

Shipping Crates Get New 'lease' On Life

Reuters - Business Video Online (July 25, 2014) Shipping containers have been piling up as America imports more than it exports. Some university students in Washington D.C. are set to get a first-hand lesson in recycling. Their housing is being built using refashioned shipping containers. Lily Jamali reports. Video provided by Reuters
Powered by NewsLook.com
Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) 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:
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