Theoretical chemists like Dr. £ukasz Tomasz Rajchel (University of Warsaw) are familiar with that. However, they – or rather their computers – are not capable of calculating them with high accuracy and efficiency at the same time.
The scholarship holder of the Alexander von Humboldt Foundation wants to get to the bottom of the computational problem while working in Prof. Dr. Georg Jansen’s Theoretical Organic Chemistry team at the University Duisburg-Essen (UDE).
Since intermolecular forces are very small, the computational technique must be very precise. Furthermore, getting significant results by experiment is difficult. For solving the task £ukasz Rajchel refers to various approximations of quantum chemistry. ‘They form my theoretical basis and shall help me develop new approaches for calculating intermolecular energies.’ The 30 year old chemist solves the underlying equations with the help of self-developed computer codes.
The more £ukasz Rajchel and his colleagues get to know about the interactions between chemical compounds, the better they can understand matter and predict its characteristics. The significance of those tiny forces cannot be stressed enough. ‘They are substantial in nature’, says Dr. Rajchel. For example: they are responsible for DNA and RNA’s stability in genetic information or for the existence of molecular crystals and the proteins’ structure. Interestingly, they also let the gecko walk on vertical glass surfaces.Clue for picture editors:
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Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
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Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
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Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
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