Welcome
to the PhD defence of
Walter Legerstee
Advanced diagnostic tools for analysing processes in metal ion batteries
Atomic force microscopy and positron annihilation spectroscopy for lithium ion and magnesium ion batteries
Date: 3 July 2025
Time: 12.00h
The story in a nutshell
About the Cover
This cover design shows a probe used for Atomic Force Microscopy, however it is provided with a small amount of lithium at the tip of the probe. Between the probe and the surface to be examined there is a thin layer of electrolyte, which allows ion transfer to take place and very local battery properties to be investigated. On the back of the thesis two typical measurement profiles are shown. The three needle-shaped peaks represent the resonance frequency of an atomic force microscope, while the semi-Gaussian distributions at the bottom represent the profile of a Positron Annihilation Spectroscopy depth profile. With the latter technique information can be obtained about the changes that take place in the depth of the electrode material as a result of charging and discharging a battery.
a peek behind the scenes
Making Ink from acorns for a cover design
science meets art meets sustainability
About GreenThesis
Elma Hogeboom is a natural scientist-turned-artist with a passion for sustainability. As a designer I soon learned that many inks and paints used by artists are not so pretty in terms of their environmental performance. In fact, many art materials contain heavy metals and other toxic substances you’d rather not put on your hands or wall.
Leveraging my science background, I researched eco-friendly art alternatives. The result was a green art materials database out of which I could draw to create my works of art that are both beautiful and sustainable.
When some years ago I designed the sustainable cover for my husband’s PhD thesis, it needed to be digitized and printed many times. Clearly, it felt only natural to have the dissertation and cover sustainably printed. But yet again I was in for a not-so-green surprise: eco-friendly printing is not common practice.
Hence I dove into my books once more and decided to found GreenThesis.nl (DuurzameDissertatie.nl). With GreenThesis, I offer PhD candidates with a green heart the option to both design and print their thesis in an eco-friendly manner. From plastic-free packaging to printing on agricultural waste, and from vegan inks to bike delivery, I can help you find a sustainable solution.
From sustainable Design to printing your PhD Thesis
GreenThesis
Contact
- info <at> greenthesis <dot> nl
- Request a quotation
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