Molecular Manipulation Lab

Machine learning for the identification of molecular conformations

We can overcome the information gap by acquiring large amounts of data while manipulating the molecule a small region around its current conformation. As long as this manipulation is fully reversible, the conformation is essentially not changed. We will implement machine learning solutions (such as (un)supervised learning, kernel ridge regression, support vector machines etc.) for the various data analysis tasks required in this context. Supervised machine learning which, based on wavelet analysis, detects discontinuities in the experimental signals that indicate (irreversible) conformational relaxations. Unsupervised machine learning to structure small segments of experimental data into larger units. Acquiring large amounts of simulation data using a reliable and accurate molecular mechanics model. Supervised machine learning (support vector machine) to determine the shape of the region within which manipulation is reversible for experimental and simulated data. Kernel regression to interpolate measured and simulated data in each region. An algorithm to assign experimental regions to simulated ones on a bipartite graph via measurements of manifold distances. This creates a map of all possible manipulation processes.

White Paper: Understanding Many-Particle Systems with Machine Learning, Inst. of Pure and Appl. Mathematics (IPAM) (2017)
News

June 27th, 2019

"The theory of scanning quantum dot microscopy" Read at J Phys. Cond. Mat.

June 10th, 2019

New scanning quantum dot microscopy (SQDM) paper online. Quantitative measurements of surface potentials and dipoles. New window to the nanoscale world. Read at Nature Materials Read full-text w/o subscription Press release

February 15th, 2019

We welcome Joshua Scheidt, computer science student at Maastricht University, who joins the MoMaLab for his master thesis.

February 4th, 2019

Hand-controlled STM-based atomic manipulation with real-time visual feedback from an MD simulation Read at Beilstein..

October 25th, 2018

We have been granted 2 Mio core‑h on JURECA for our simulation work on molecular adsorption and manipulation.
Meet us at
The 22nd International Conference on NC-AFMRegensburg, Germany, July 29 - August 2, 2019
Hands-on DFT and beyondBarcelona, Spain, August 26 - September 6, 2019
▶   704. WE-Heraeus-Seminar "Exploring the Limits of Nanoscience with Scanning Probe Methods"Bad Honnef, Germany, 27-31 October 2019