Featured Research

from universities, journals, and other organizations

New Technique Measures Chemical Composition Of Tiny Details

Date:
January 27, 2000
Source:
Netherlands Organization For Scientific Research
Summary:
Chemistry researchers at Eindhoven University of Technology (TUE), funded by NWO’s Chemical Sciences Council, recently discovered a way to determine the chemical composition of chips or coatings which are only a few nanometers across. This technique makes a major contribution to further miniaturisation in the field of micro-electronics and semiconductors, in which the smallest structural details are about 200 nanometers in size.

Chemistry researchers at Eindhoven University of Technology (TUE), funded by NWO’s Chemical Sciences Council, recently discovered a way to determine the chemical composition of chips or coatings which are only a few nanometers across. This technique makes a major contribution to further miniaturisation in the field of micro-electronics and semiconductors, in which the smallest structural details are about 200 nanometers in size.

Related Articles


The method which the Eindhoven have developed is based on the radiation emitted by an object when it is irradiated by a beam of electrons. The measurable phenomenon occurs because the electrons in the beam collide with electrons in the atoms making up the object so that they enter an excited state. When the electrons return to the free state, with lower energy, X-rays are emitted. The wavelength of this radiation is characteristic of the chemical element, while the intensity of the radiation depends on the overall composition of the material.

The Dutch researchers combined a model for determining the chemical composition on the basis of the measured intensity with the use of a high resolution electron microscope. The beam of electrons which the microscope produces irradiates a minimum area of 10 by 10 nanometers. Using the X-rays emitted from this area, it is possible to determine precisely which chemical elements occur at that location and in what quantity.

Using this technique, research is now being carried out on a new type of electrical contact within chips constructed of a thin layer of cobalt deposited on a semiconductor. The cobalt forms an electrical connection for the semiconductor. When heat is applied, a chemical reaction takes place between the cobalt and the semiconductor, improving the mechanical strength and the electrical conductivity of the contact. The new chemical technique allowed the researchers to determine accurately where chemical changes had developed as a result of the heat-treatment.

In industry, micro-electronics or semiconductor components with a diameter of less than 1 micrometre are now commonplace. Further miniaturisation of the smallest structures within equipment, such as electrical connections and junctions within a chip, will only be possible if researchers are in a position to measure the chemical composition of the smallest details of the new materials.


Story Source:

The above story is based on materials provided by Netherlands Organization For Scientific Research. Note: Materials may be edited for content and length.


Cite This Page:

Netherlands Organization For Scientific Research. "New Technique Measures Chemical Composition Of Tiny Details." ScienceDaily. ScienceDaily, 27 January 2000. <www.sciencedaily.com/releases/2000/01/000127082008.htm>.
Netherlands Organization For Scientific Research. (2000, January 27). New Technique Measures Chemical Composition Of Tiny Details. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2000/01/000127082008.htm
Netherlands Organization For Scientific Research. "New Technique Measures Chemical Composition Of Tiny Details." ScienceDaily. www.sciencedaily.com/releases/2000/01/000127082008.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Building Google Into Cars

Building Google Into Cars

Reuters - Business Video Online (Dec. 19, 2014) Google's next Android version could become the standard that'll power your vehicle's entertainment and navigation features, Reuters has learned. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
AP Review: Nikon D750 and GoPro Hero 4

AP Review: Nikon D750 and GoPro Hero 4

AP (Dec. 19, 2014) What to buy an experienced photographer or video shooter? There is some strong gear on the market from Nikon and GoPro. The AP's Ron Harris takes a closer look. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
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