Project

Transmission Kikuchi diffraction characterization of Cu nanoparticles in the SEM

Publisher

Supervisor

Location

Greater Copenhagen area

Transmission Kikuchi diffraction (TKD) is a diffraction technique applied to quantitatively characterize the microstructure of crystalline, electron transparent, samples in the scanning electron microscope (SEM). It was first proposed in 2012 by Keller and Geiss [1] and it has attracted attention of scientists from a variety of fields. Recently we have been able to investigate individual nanoparticles using TKD and correlate their individual microstructure with their hydrogen absorption and desorption properties[2]. The work has resulted in a fundamental understanding of the role of grain boundaries in the hydrogen-induced phase transition during hydride formation and decomposition.

The goal of the current project is to correlate the microstructure of Cu nanoparticles with their oxidation and reduction properties. To that end, transmission Kikuchi diffraction will be used to map the microstructure of individual particles. Since the diffraction signal is strongly related to the material density and thickness, a detailed parameter study will be necessary to obtain the desired characterization.

 

 

 

 [1]        R. r Keller and R. h Geiss, “Transmission EBSD from 10 nm domains in a scanning electron microscope,” J. Microsc., vol. 245, no. 3, pp. 245–251, Mar. 2012.

[2]         S. Alekseeva, A. B. da S. Fanta, B. Iandolo, T. J. Antosiewicz, F. A. A. Nugroho, J. B. Wagner, A. Burrows, V. P. Zhdanov, and C. Langhammer, “Grain boundary mediated hydriding phase transformations in individual polycrystalline metal nanoparticles,” Nat. Commun., vol. 8, no. 1, p. 1084, Dec. 2017.

In collaboration with

Christoph Langhammer, Sara Nilsson

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Contact

Company / Organization

DTU Nanolab

Name

Alice Bastos da Silva Fanta

Position

Seniorforsker

Mail

absf@dtu.dk

Supervisor info

BSc in Mechanical Engineering

Supervisor

Alice Bastos da Silva Fanta

Co-supervisors

Andrew Burrows

Type

MSc thesis, Special course

MSc in Materials and Manufacturing Engineering

Supervisor

Alice Bastos da Silva Fanta

Co-supervisors

Andrew Burrows

Type

MSc thesis, Special course

MSc in Physics and Nanotechnology

Supervisor

Alice Bastos da Silva Fanta

Co-supervisors

Andrew Burrows

Type

MSc thesis, Special course

Technical University of Denmark

For almost two centuries DTU, Technical University of Denmark, has been dedicated to fulfilling the vision of H.C. Ørsted – the father of electromagnetism – who founded the university in 1829 to develop and create value using the natural sciences and the technical sciences to benefit society.


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