Prethermalization has emerged as an important and useful concept in modern quantum theory. It describes the situation where a system does not quickly settle down to equilibrium. Instead it settles to a long-lived, transient, temporary state that it will leave, eventually. Though somewhat inaccurate, one can compare this to a supercooled liquid that can dwell for a long time in the liquid phase, until it eventually freezes. The comparison is ...
The density of matter in a nucleus is extremely high: about 10000 billions more dense than gold, which in turn is 20 times more dense than water. In nature, only collapsed stars and black holes have a higher density. Nevertheless, it is possible to further compress nuclear matter: nuclei can be squeezed and elongated like a spring, of course in three dimensions. Oscillations that are created in this way are called compression modes of the ...
The objective of this project is to exploit the new, efficient, high-resolution laser spectroscopy technique that overcomes the present experimental constraints to study the heavy element region. The approach is based on in-gas-jet resonance-ionization spectroscopy of actinide isotopes produced in fusion evaporation reactions by using narrow-bandwidth, high power, high-repetition-rate, pulsed lasers. The regions of interest are the ...
Imec has recently proposed an integrated solution to this paradox by solving the resolution and statistics problem using the so called Self-Focusing SIMS (SF-SIMS)1,2,3 concept and the 3D-heterogeneity problem by performing these measurements in a novel system based on the combination of a ToF-SIMS (Time of Flight - Secondary Ions Mass Spectrometry) and an in-situ AFM (Atomic Force Microscope) instrument. This does lead to a metrology concept ...
Recent advances in quantum gravity challenge the classical viewpoint that black hole horizons shroud their inner structure. However, there is no consensus on the scale of possible quantum corrections to the classical horizon of General Relativity. This undermines the scientific potential to probe quantum gravity of current large observational programs. With this project, I will develop quantum gravity models of black holes and their ...
In advanced nanoelectronics transistor structures, strain can be used as a concept to enhance the mobility of electrons (or holes) in the channel region and thereby increasing the channel conductivity and overall device performance. At the same time, novel transistor channel materials such as compound III-V semiconductors are introduced in 3D integration schemes. Strain and composition measurements for process optimization on these structures ...
Ternary/doped oxides that exhibit electronic/ionic conductivity are essential for a wide range of applications, e.g. as transparent conductors in photovoltaics and flexible electronics, or as an ion conducting solid electrolyte for Li ion batteries. The electronic/ionic conductivity of these oxides is determined by structural properties at the atomic scale. Therefore, atomic scale control during synthesis and atomic scale characterization of ...