Nov 8 2010
Professor Henny Zandbergen has been awarded an ERC Advanced Grant of 2.5 million euros for his research into improved microscopic technologies. The technologies enable Professor Zandbergen to visualise extremely small structures, such as semiconductor nanowires, all the way down to atomic level.
What is especially remarkable is that the structures that are made visible in this way can be measured at the same time. The ERC Advanced Grant is awarded by the EU to scientists of exceptional standing. Henny Zandbergen is professor at the TU Delft, Kavli Institute of Nanoscience.
Nanolaboratory
Modern microscopic technologies allow researchers to visualise changes to materials at atomic level in real-time. “Currently, the most important technology in this area is High-Resolution Transmission Electron Microscopy (HRTEM),” says Henny Zandbergen.
The technique for which Zandbergen made his ERC Advanced Grant proposal adds a unique extra element to HRTEM. It is a combination of electron microscopy at atomic level and physical measurements (of electrical characteristics in particular). Measurements can be made at the same time as visualisation occurs, so researchers are able to measure straight away what they are making visible on an atomic scale through the electron microscope. “As a result, we can use HRTEM as a kind of nanolaboratory,” explains Professor Zandbergen.
NEMinTEM
“We want to use the ERC Advanced Grant to develop equipment and methods for carrying out nanoelectrical measurements, such as electrical resistance, in HRTEM. These ‘NanoElectrical Measurements in a Transmission Electron Microscope’ (NEMinTEM) will be applied to various nanostructures, such as semiconductor nanowires, graphene and metal nanoelectrodes.”
“In addition, we would like to make some minor modifications to nanostructures of this kind, using the electron beam of the electron microscope,” continues Zandbergen. “We can then immediately measure the effect of these modifications on the electrical characteristics of the material.”
Source: http://www.tudelft.nl/