M.Sc. Julia Auernhammer

Contact

work +49 6151 16-21939

Work L2|07 208
Alarich-Weiss-Straße 16
64287 Darmstadt

  • Atomic force microscopy and spectroscopy
  • Cellulose – Functionalised single fibres and fibre-fibre joints
  • Nanomechanical bending and tensile tests
  • Measurements with varied environmental conditions (temperature, relative humidity) and in aqueous environments
Nano mechanical characterisation of functionalised cellulose fibres and fibre-fibre bonds
As part of the project single cellulose fibres, fibre-fibre bonds and paper fleeces are functionalised with polymers. For a better understanding of the connection between fibre properties on micro- or nanometre scale and the functional properties of paper, the atomic force microscope and nano mechanical bending tests are used for investigation. Therefore, the spatial distribution of the polymer on paper fleeces/fibres, the nano mechanics of polymer coated cellulose fibres in dependency of temperature and humidity and the strength of the inter fibre bonds of functionalised fibres are of interest. The gained knowledge is compared with fluorescence microscopy, confocal laser scanning microscopy and scanning electron microscopy to obtain a nano mechanical as well as a chemical image of the surface.
More Information
3 J Auernhammer , AK Bell, M Schulze, Y Du, L Stühn, S Wendenburg, I Pause, M Biesalski, W Ensinger, RW Stark (2021):
Nanomechanical characterisation of a water-repelling terpolymer coating of cellulosic fibres

Cellulose 2021. arXiv:2012.049332020
DOI: 10.1007/s10570-020-03675-9
[Article]
2
J Auernhammer, T Keil, B Lin, JS Schäfer, B Xu, M Biesalski, RW Stark (2021):
Mapping Humidity-dependent Mechanical Properties of a Single Cellulose Fibre
arXiv identifier: 2012.10207
https://arxiv.org/abs/2012.10207
[Article]
1 Stühn, Lukas; Auernhammer, Julia ; Dietz, Christian (2019):
pH-depended protein shell dis- and reassembly of ferritin nanoparticles revealed by atomic force microscopy.
In: Scientific Reports, 9, (1), Springer Nature, e-ISSN 2045-2322, DOI: 10.25534/tuprints-00009681,
Online-Edition: https://tuprints.ulb.tu-darmstadt.de/9681
2 Julia Auernhammer and Robert W. Stark
Nano mechanical characterisation of functional fibres and fibre joints in paper
1. Status Meeting of the “FiPRe” project, Roßdorf, Mai 2019
1 Julia Auernhammer and Robert W. Stark
Nano mechanical characterisation of functional cellulose single fibres
DPG Spring Meeting of the Condensed Matter Section, Regensburg, Apr. 2019
3 Julia Auernhammer, Lukas Stühn, Robert W. Stark and Christian Dietz
In situ observation of the pH-dependent dis- and reassembly process of ferritin nanoparticles by atomic force microscopy
Poster contest TU Darmstadt, Darmstadt, Dec. 2019
2 Lukas Stühn, Julia Auernhammer and Christian Dietz
In situ observation of the pH-dependent dis- and reassembly process of ferritin nanoparticles by atomic force microscopy
7th Multifrequency AFM Conference, Apr. 2018, Madrid
1 Lukas Stühn, Julia Auernhammer, Anna Fritschen, Felix Nagler and Christian Dietz
Subsurface imaging of magnetic nanoparticles and measurement of nanomechanical properties of polymers and biological materials by bimodal atomic force microscopy
DPG Spring Meeting of the Condensed Matter Section, Mar. 2018, Berlin
  • Research Lab I (materials science department)
  • “Ferien im Labor” (materials science department)
  • “Erfinderlabor” (materials science department and centre for chemistry)
  • Mentoring of bachelor- and master-students