Westfälische Wilhelms-Universität Münster

3 ARTICLES PUBLISHED IN JoVE

Engineering

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Pol Besenius¹, Isja de Feijter², Nico A.J.M. Sommerdijk³, Paul H.H. Bomans³, Anja R. A. Palmans²

¹Organic Chemistry Institute and CeNTech, Westfälische Wilhelms-Universität Münster, ²Laboratory of Macromolecular and Organic Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, ³Laboratory of Materials and Interface Chemistry and Soft Matter Research Unit, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology

The goal of this experiment is to determine and control the size, shape and stability of self-assembled discotic amphiphiles in water. For aqueous based supramolecular polymers such level of control is very difficult. We apply a strategy using both repulsive and attractive interactions. The experimental techniques applied to characterize this system are broadly applicable.

Neuroscience

FIM Imaging and FIMtrack: Two New Tools Allowing High-throughput and Cost Effective Locomotion Analysis

Benjamin Risse^*1,2, Nils Otto^*1, Dimitri Berh^1,2, Xiaoyi Jiang², Christian Klämbt¹

¹Institute of Neuro and Behavioral Biology, Westfälische Wilhelms-Universität Münster, ²Department of Mathematics and Computer Science, Westfälische Wilhelms-Universität Münster

FIM is a novel, cost effective imaging system designed to track small moving objects such as C. elegans, planaria or Drosophila larvae. The accompanying FIMTrack program is designed to deliver fast and efficient data analysis. Together, these tools allow high-throughput analysis of behavioral traits.

Environment

Preparation of Authigenic Pyrite from Methane-bearing Sediments for In Situ Sulfur Isotope Analysis Using SIMS

Zhiyong Lin^1,3, Xiaoming Sun^1,2,3,4, Jörn Peckmann⁵, Yang Lu^2,3, Harald Strauss⁶, Li Xu^2,3, Hongfeng Lu⁷, Barbara M.A. Teichert⁶

¹School of Earth Sciences and Engineering, Sun Yat-sen University, ²School of Marine Sciences, Sun Yat-sen University, ³Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, ⁴South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, ⁵Institut für Geologie, Universität Hamburg, ⁶Institut für Geologie und Paläontologie, Westfälische Wilhelms-Universität Münster, ⁷Guangzhou Marine Geological Survey

Analyses of the sulfur isotopic composition (δ³⁴S) of pyrite from methane-bearing sediments have typically focused on bulk samples. Here, we applied secondary ion mass spectroscopy to analyze the δ³⁴S values of various pyrite generations to understand the diagenetic history of pyritization.