Projects as a company
An important step towards molecular circuitry
Espeem helped getting this work into Science! A group lead by Dr. Marek Kolmer from Krakow and Prof. Konstantin Amsharov from Erlangen made an important discovery in organic synthesis when they demonstrated how to synthesize aromatic molecules on non-metallic surfaces. This discovery is important because it, among other things, opens up wider possibilities to build molecular circuits. Espeem backed up the researchers by making sure molecular features in STM were indeed the target molecules.
Ever-bigger, perfect flakes
Espeem participated as a scientific partner and consultant when a group lead by Prof. Diego Pena from Santiago de Compostela University published the article “Building a 22-ring nanographene by combining in-solution and on-surface syntheses” in Chemical Communications Issue 73,2018. Espeem helped them by predicting exactly how the molecules would look in STM so they could be sure that the molecule on the surface was actually what they predicted. We are grateful to be able to help, as the ever more precise and complex bottom-up recipes revolutionize nanotechnology.
Previous projects by our team members
Below are projects that were realized at other organizations by our team members.
Dangling bonds on the Si/Ge(001):H surface
Over the past few years, NANOSAM from Krakow have made a lot of progress in understanding dangling-bonds on the Si/Ge(001):H surface. The reason why these dangling-bonds are so enticing is that it that they can be created with atomic precision - and that this can be done fast. So if we can understand the physics of dangling bonds, perhaps this could be the basis of quantum computing.
However, this subject is far from simple and NANOSAM needed the theoretical help of our Founder, Mads Engelund, then working as an academic researcher. To understand the measurement models of the interaction between electrons and atomic motion had to be used.
With this help, NANOSAM was able to explain the physical mechanism behind strange STM topographic features and hysteresis features in STS measurements.
The Y molecules
In a multi-year effort NANOSAM has investigated how three-branched molecules, or "Y"-molecules, move around and absorb to dangling-bond sites on Si/Ge(001):H.
Q: Why dangling-bond sites? A: They can be created quickly in atomically precise patterns!
Q: Why evaporate molecules? A: The atomically precise dangling-bond sites could be used to create atomically precise molecular structures - potentially build almost anything!
Q: Why three-branched molecules? A: No matter how you turn them they remain the same - less uncertainty and less complexity!
Our Founder, Mads Engelund, aided in this on-going work by quickly relaxing an enourmous amount of possible guessed configurations. Only by many trials and many errors where we able to figure out the likely molecular configurations giving rise to the STM patterns observed in the experiments.