PhD and Postdoc – computational physics of multiscale phenomena

The Institute for Multiscale Simulation (MSS) of the FAU Erlangen-Nürnberg (www.mss.cbi.fau.de) is currently seeking:

1 graduate student and

1 postdoctoral researcher

in the field of:

computational physics of multiscale phenomena

environment:

At the MSS we investigate the multiscale physics of particulate systems. The MSS hosts an interdisciplinary research team with a unique combination of scientists working numerically, theoretically and experimentally.

topic:

One of the most challenging tasks in computational physics is the investigation of phenomena which involve multiple length or time scales. Solving such multiscale problems is highly demanding but typically equally rewarding. The announced positions are dedicated to two topics from computational multiscale physics which are booth, scientifically appealing and application oriented:

  • fracture in many-particle granular systems and
  • granular pipe flow

Depending on your interests and qualification, further topics

from computational multiscale physics are possible.

profile:

You are highly motivated and you are deeply committed to research. You are able to work independently and as part of a team. You are equipped with an analytical and critical mind-set and you communicate clearly and concisely.

qualification:

  • master’s degree or PhD in physics or related
  • background in computational physics
  • programming skills (e.g. C++, Python, Matlab)
  • experience in particle simulations (e.g. DEM)

application:

  • one single pdf including your research statement, two references, your CV and, if applicable, a list of your publications
  • please send your application to
  • Prof. Thorsten Pöschel
  • thorsten.poeschel@fau.de
  • open until the positions are filled

Master’s Project: 3D-printed macroscopic agent reproducing bacterium behavior

The Institute for Multiscale Simulation of the Cluster of Excellence ”Engineering of Advanced Materials“ at the FAU Erlangen-Nürnberg offers a Masters Project on 3D-printed macroscopic agent reproducing bacterium behavior

Introduction:
Some bacteria, like E. Coli (see Fig. 1), swim in straight runs interrupted by sudden reorientation events called tumbles. At high density, the random changes in the direction of motion cause interesting phenomena, for example, coarsening and clustering, collective translation and/or rotation; but, can we develop a mechanical analogous of these bacteria that is capable to reproduce those behaviours in the macroscopic world?

The first attempt of developing such objects is shown in Fig. 2. This device, called macro-bacterium, is capable to convert vibrational energy into translational and occasionally into rotational energy, by means of friction, but still is not completely clear whether it reproduces or not the above mentioned behaviours.

Project:

  • Designing and printing macro-bacteria in 3D, using rapid prototyping techniques. (You can create your own models)
  • Characterization of the motion of the manufactured devices: Using a high speed camera their motion will be recorded for different vibration frequencies and amplitudes, and applying image processing methods physical magnitudes will be determined.
  • Performing experiments in order to study the collective behaviour at different densities.
  • Optimization of the 3D models.

What you will learn:

Modelling and printing in 3D. High speed movie recording techniques. Image processing.

Necessary skills:

You are diligent, have interest for the research. It would be beneficial to have some knowledge in computer programming (Matlab/C++/Java/…), but it is not essential.

Contact information:
Harol Torres Menéndez
Institute for Multiscale Simulations
Friedrich-Alexander Universität Erlangen-Nürnberg
harol.torres@fau.de

Tumbling and running

Master’s/Bachelor’s Project – Manufacture and characterization of 3D active rotating particles, VIBROTS

The Institute for Multiscale Simulation of the Cluster of Excellence ”Engineering of Advanced Materials“ at the FAU Erlangen-Nürnberg offers a Masters Project on Manufacture and characterization of 3D active rotating particles, VIBROTS.

Introduction:
A VIBROT, as the one shown in Fig. 1, is a device capable to convert vibrational energy into rotational energy by means of friction, [1]. Modern manufacturing techniques, such as rapid prototyping using 3D printers, enable us to fabricate more accurate and complex versions of this device, see Fig. 2. The dynamic properties of each vibrot depend on its mass, shape, material, fabrication method, that is why characterization experiments play a key roll after the manufacture process.

Project:
The first part of the project is intended to the design and manufacture of different kind of vibrots, using 3D printers. The parameters to be changed will be mass, length of the legs, inclination of the legs and finally the overall shape of the vibrot (up to your imagination).

The second part of the project is intended to the investigation of the dynamic properties of the manufactured vibrots. Each particle will be placed on a vibrating platform and its whole motion will be recorded with a high speed camera. Further, by applying image processing methods each particle will be tracked and its dynamic properties, such as linear and angular velocity, mean squared displacement, etc., will be determined.

The last part of the project is intended to the optimization of the designed vibrots in order to reveal desired behaviours.

What you will learn:
Modelling and printing in 3D. High speed movie recording techniques. Image processing.

Contact information:
Harol Torres Menéndez
Institute for Multiscale Simulations
Friedrich-Alexander Universität Erlangen-Nürnberg
harol.torres@fau.de

[1] Altshuler, E., Pastor, J. M., Garcimartı́n, A., Zuriguel, I., & Maza, D. (2013). Vibrot, a simple device for the conversion of vibration into rotation mediated by friction: preliminary evaluation. PloS one, 8(8), e67838.
[2] Scholz, C., & Pöschel, T. (2016). Actively rotating granular particles manufactured by rapid prototyping. Revista Cubana de Fı́sica, 33(1), 37-38.
[3] Torres, H., Freixas, V. M., & Pérez, D. (2016). The Newtonian mechanics of a Vibrot. Revista Cubana de Fı́sica, 33 (1), 39-43.

Manufacture and characterization

hiwisuche-patricweb

Studentische Hilfskraft – Webprogrammierung

Der Lehrstuhl für Multiskalensimulation sucht eine studentische/wissenschaftliche Hilfskraft zur Webprogrammierung (Linux, Apache, MySQL, PHP oder vergleichbar)

Aufgabe:
Sie entwickeln, implementieren und warten eine Website zur Verwaltung von Lehrmaterialien (Übungsaufgaben mitsamt Musterlösungen).

Profil:
Sie haben praktische Erfahrung im Umgang mit HTML/CSS sowie Linux, Apache, MySQL, PHP oder vergleichbaren Werkzeugen.

Konditionen:
– Umfang: variabel zwischen 10-19 h/w
– Vergütung gemäß https://www.zuv.fau.de/universitaet/organisation/verwaltung/zuv/verwaltungshandbuch/drittmittel/Verguetungstabelle.pdf
– Arbeitszeit: frei/nach Absprache
– Dienstort: Nägelsbachstr. 49b, 91052 Erlangen
– Bei Interesse oder Rückfragen kontaktieren Sie bitte Herrn Dr. Patric Müller (patric.mueller@fau.de, 09131 85 20866)