Julia Auernhammer

Julia Auernhammer, M.Sc.

+49 6151 16-21939

Alarich-Weiss-Straße 16
64287 Darmstadt

Office: L2|07 208

Research fields

  • 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

PhD project

Nano mechanical characterisation of functionalised cellulose fibres and fibre-fibre bonds

Conference talks

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

Poster

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

Teaching

  • 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

Description of project

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.

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