Featured Research

from universities, journals, and other organizations

Shooting A Painting Reveals Its Pigments

Date:
December 22, 2003
Source:
Netherlands Organization For Scientific Research
Summary:
Dutch scientists have developed a new method for studying organic pigments in the paintings of old masters. Firing a laser at microscopic paint samples releases very small quantities of paint, which can be used for a surface analysis. It is even possible to identify a pigment in a layer just one hundredth of a millimetre thick.

Dutch scientists have developed a new method for studying organic pigments in the paintings of old masters. Firing a laser at microscopic paint samples releases very small quantities of paint, which can be used for a surface analysis. It is even possible to identify a pigment in a layer just one hundredth of a millimetre thick. This is a significant advantage in conservation studies of priceless paintings.

Nicolas Wyplosz investigated laser desorption mass spectrometry (LDMS) as an analytical technique for studying organic pigments. The technique can determine the composition of the paint using a sample just ten micrometres thick. A knowledge of this composition is important for a better understanding of the ageing process.

In this technique, laser light is fired at a small cross-sectional area of a paint sample. The laser beam vaporises molecules and atoms from the paint sample surface. These particles are identified by a mass spectrometer. Finally, the composition of the paint layers can be determined from the particles detected. For example, a certain pigment can be obtained from two different plants and Wyplosz managed to determine which plant the pigment came from.

The preparation of the samples was found to be crucial for the success of the analysis technique. The paint samples must be smoothly polished with as little roughness as possible, and Wyplosz developed a new technique for this.

At present the best techniques for studying pigments in paintings are mass spectroscopy and chromatography. The new technique is a valuable addition to these, as the present techniques cannot be used for cross-sectional samples. A typical old master's painting consists of a canvas, a layer of animal glue, a primer, various layers of paint, and finally a layer of varnish. Studying cross-sectional samples is easier because the different layers do not need to be separated prior to analysis. The paint layer is just tens to hundreds of micrometres thick.

This study was part of NWO's MOLART programme. During the programme, fundamental research into the varnish, paint and pigments was carried out in order to understand the molecular aspects of the ageing processes. Wyplosz's doctoral thesis is the eighth in a series of reports which summarise the programme's results.


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. "Shooting A Painting Reveals Its Pigments." ScienceDaily. ScienceDaily, 22 December 2003. <www.sciencedaily.com/releases/2003/12/031222071932.htm>.
Netherlands Organization For Scientific Research. (2003, December 22). Shooting A Painting Reveals Its Pigments. ScienceDaily. Retrieved October 23, 2014 from www.sciencedaily.com/releases/2003/12/031222071932.htm
Netherlands Organization For Scientific Research. "Shooting A Painting Reveals Its Pigments." ScienceDaily. www.sciencedaily.com/releases/2003/12/031222071932.htm (accessed October 23, 2014).

Share This



More Matter & Energy News

Thursday, October 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Reuters - Innovations Video Online (Oct. 22, 2014) — Inspired by the way a chameleon changes its colour to disguise itself; scientists in Poland want to replace traditional camouflage paint with thousands of electrochromic plates that will continuously change colour to blend with its surroundings. The first PL-01 concept tank prototype will be tested within a few years, with scientists predicting that a similar technology could even be woven into the fabric of a soldiers' clothing making them virtually invisible to the naked eye. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Jet Sales Lift Boeing Profit 18 Pct.

Jet Sales Lift Boeing Profit 18 Pct.

Reuters - Business Video Online (Oct. 22, 2014) — Strong jet demand has pushed Boeing to raise its profit forecast for the third time, but analysts were disappointed by its small cash flow. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Internet of Things Aims to Smarten Your Life

Internet of Things Aims to Smarten Your Life

AP (Oct. 22, 2014) — As more and more Bluetooth-enabled devices are reaching consumers, developers are busy connecting them together as part of the Internet of Things. (Oct. 22) Video provided by AP
Powered by NewsLook.com
What Is Magic Leap, And Why Is It Worth $500M?

What Is Magic Leap, And Why Is It Worth $500M?

Newsy (Oct. 22, 2014) — Magic Leap isn't publicizing much more than a description of its product, but it’s been enough for Google and others to invest more than $500M. Video provided by Newsy
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