Follow us...


Search News Archives





View Channel

Laboratory Products



View Channel

Special Offers and Promotions


Microscopy | Image Analysis



View Channel

Separation Science



View Channel

Coronavirus (COVID-19)



View Channel

Research & Case Studies



View Channel

Conferences | Events

Novel Technique for Characterization of Monolayer Segregation

Scientists at the University of Nantes (France) have recently developed a novel technique to detect and quantify grain boundary segregations using wavelength dispersive X-ray spectroscopy (WDS). The instrument basis for the development of the new technique is the MERLIN® Field Emission Scanning Electron Microscope from Carl Zeiss, equipped with an Oxford WDS spectrometer. The experiment was performed at the Laboratoire Génie des Matériaux et Procédés Associés Polytech´ Nantes (LGMPA). 

The main characteristic of the MERLIN FE-SEM enabling this novel technique is the high probe current, of up to 300 nA. In the experiment it was even possible to operate the system at 400 nA. Only by applying such a high probe current can sufficient signal be excited. Due to the double condenser lens of the GEMINI® II column within the MERLIN, the beam diameter is minimized to the extreme, resulting in high spatial resolution of the WDS analysis. 

Application background

Interfacial segregations can lead to a dramatic change of materials properties, e.g. loss in ductility of iron, nickel or copper alloys. Until now, the characterization of top surface layers is generally processed with Auger Electron Spectroscopy or Electron Probe Micro Analysis. Both techniques have several drawbacks, e.g. the need for ultra-high vacuum conditions or limitations in spatial resolution. These drawbacks are overcome by the technique developed at the LGMPA, Nantes.  

Further information about the unique properties of MERLIN can be found at This also contains a detailed application note about the novel technique for characterization of monolayer segregation.

If you have not logged into the website then please enter your details below.


Subscribe to any of our newsletters for the latest on new laboratory products, industry news, case studies and much more!

Newsletters from Lab Bulletin


Request your free copies HERE




Popular this Month

Top 10 most popular articles this month


Today's Picks




Looking for a Supplier?

Search by company or by product


Company Name:






Please note Lab Bulletin does not sell, supply any of the products featured on this website. If you have an enquiry, please use the contact form below the article or company profile and we will send your request to the supplier so that they can contact you directly.

Lab Bulletin is published by newleaf marketing communications ltd.


Media Partners