Focused Ion Beam
What can a Focused Ion Beam do?
Prof. Dr. Lorke's working group uses a FIB/SEM DualBeam™ microscope from FEI as a "nanoworkbench" for sample preparation on a nanometre scale. With this device, it is possible on the one hand - as with a classic scanning electron microscope (SEM) - to take images of samples with very high resolution and on the other hand to structure samples with the help of gallium ions. The abbreviation FIB stands for Focused Ion Beam. Both possibilities are combined here in one device.
Figure 1: Electron microscope image of a cross-section prepared with the ion beam through an electrode for a Li battery top view (left), view of the cross-section (right).
Further information
Focused Ion Beam in ICAN

Mapping using SEM and FIB
Imaging of sample surfaces is possible with the electron beam as well as the ion beam up to a resolution of approx. 1 nm and 5 nm respectively.

Cutting and structuring
With the help of the ion beam, it is possible to carry out lateral structuring of samples, but also to cut into the sample in order to examine cross-sections of the samples.

Local material deposition
In addition, this device allows the deposition of platinum, as a conductive material, and silicon oxide, as an insulating material.

Preparation of TEM lamella
For an examination by TEM, it is necessary to prepare a very thin lamella. This can be achieved in the conventional way by polishing.

FEI Helios NanoLab™ 600
Device specifications
Your contact for the FIB:
ICAN - Interdisciplinary Center for Analytics on the Nanoscale
47057 Duisburg
Functions
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Technische/r Mitarbeiter/in, Center for Nanointegration Duisburg-Essen
Current lectures
No current lectures.
Past lectures (max. 10)
No past lectures.
The following publications are listed in the online university bibliography of the University of Duisburg-Essen. Further information may also be found on the person's personal web pages.
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A Multiscale Pore Analysis Method for Polymer Electrolyte Membrane Fuel Cell Catalyst Layers Validated and Exemplified by Correlating Microstructure with Production Process ParametersIn: Advanced Energy & Sustainability Research 2025 , in pressDOI (Open Access)
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Impact of Supraparticle Sizes and Morphology on Interparticle Spacing, Slurry Rheology, Coating Density, and Electrochemical Performance in Si/C Anodes for Li-Ion BatteriesIn: ACS Applied Energy Materials , Vol. 8 2025, Nr. 4, pp. 2050 – 2063
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One-step synthesis of carbon-supported electrocatalystsIn: Beilstein Journal of Nanotechnology , Vol. 11 2020, pp. 1419 – 1431DOI (Open Access)
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The ultramicrotome as a tool for the preparation of ultra-thin samples for TEM investigations2021
(ICAN Notes ; 4)DOI, Online Full Text (Open Access)