Die Rolle des Wasserstoffs für ein klimaneutrales Deutschland im Jahr 2045
In den Medien, in der Politik, aber auch in der Wissenschaft
existieren zwei Denkrichtungen:
Wasserstoff wird in großem Stil in den
unterschiedlichsten Anwendungsbereichen dazu dienen, auf fossile Rohstoffe zu
verzichten – Wasserstoff als Enabler der Defossilisierung.
Für Wasserstoff bleiben am Ende nur
Nischenanwendungen übrig, da aus Effizienzgründen überwiegend direkt elektrifiziert
wird – the all electric world.
Die Wirklichkeit des Jahres 2045 wird aller
Wahrscheinlichkeit nach durch keines dieser beiden Zukunftsbilder beschrieben
werden.
Der Vortrag versucht, eine neutrale Darstellung zu geben.
Ausgehend von den verschiedenen Wegen der Herstellung von
klimaneutralem Wasserstoff und dessen Einsatzes in den Sektoren Verkehr, Raum-
und Prozesswärme sowie Stahl und Chemie werden verschiedene Aspekte des
Hochlaufes einer Wasserstoffwirtschaft dargestellt.
local host: Prof. Dr. Horst Schmidt-Böcking | schmidtb@atom.uni-frankfurt.de
Molecular Vibrations - Silent Observers and Active Players
Vibrations are sensitive probes of molecular structure and dynamics. Interrogated by ultrafast infrared pulse sequences, local vibrations provide information on structure changes of molecules from the size of a few atoms to large proteins and from femtoseconds to milliseconds, which we demonstrate for the case of photoreceptor proteins.
But vibrations are also important active players in (bio-)molecular dynamics. Using a two-dimensional infrared correlation spectroscopy, we detected underdamped, THz motion of proteins proposed to enhance enzyme catalysis. Vibrations are also involved in energy transfer processes in proteins. We developed genetically encoded vibrational energy injectors and sensors to track energy transfer in proteins on the picosecond time scale on the level of single amino acids.
Excitation of vibrations can be used to manipulate molecular systems. In our VIPER (vibrationally promoted electronic resonance) 2D-IR spectroscopy, we exploit vibronic couplings to change the UV/VIS spectrum of molecular systems by mid-IR pulses. Applications are discussed from controlling chemical reactions over optoelectronics to photobiology.
local host: Dr. Benesh Joseph | joseph@biophysik.uni-frankfurt.de
The collective behavior of many interacting particles in solids gives rise to a wealth of fascinating phenomena. While a full theory of many particles is typically out of reach, there are usually only a few parameters relevant for the description of the low-energy material properties. It is often convenient to introduce effective quasiparticles, whose properties govern the response of the solid at low energies and which may or may not have counterparts as elementary particles in nature.
A key feature of a quasiparticle is that it cannot exist on its own, but it is intimately linked to its environment, with which it interacts. Hence, probing their properties can yield insight into the complex many-body state of the system. Moreover, as the properties of quasiparticles can be very exotic and potentially tunable, they provide excellent building blocks for novel devices.
In this talk I will discuss several examples of the sometimes surprising behavior of elementary excitations occuring in different states of matter ranging from ordinary Fermi liquids over excitons in semiconductors to topological superconductors and spin liquids. I will highlight how the peculiarities of quasiparticles can teach us about the entire system and potentially lead to new applications.
local host: Prof. Dr. Roser Valenti | valenti@itp.uni-frankfurt.de
14.12.2022
Prof. Dr. Sanjay Reddy (University of Washington, USA)
tba
local host: Prof. Dr. Jürgen Schaffner-Bielich | schaffner@astro.uni-frankfurt.de
Grußworte Prof. Dr. Roger Erb, Dekan des Fachbereichs Physik Prof. Dr. Michael Huth, Vizepräsident Goethe-Universität Frankfurt Prof. Dr. Dr. h.c. Volker Mosbrugger, Stiftungsratvorsitzender des FIAS
Interludium 36 Jahre mit Horst (Reminiszenzen)
Festvortrag Prof. Dr. John Harris (Yale University)
Umtrunk und Imbiss im FIZ Max-von-Laue Straße, 60438 Frankfurt (Zur Planung bitten wir um Rückantwort bis zum 25.11.2022)
local host: Prof. Dr. Dirk Rischke | drischke@itp.uni-frankfurt.de
11.01.2023
Prof. Dr. Camilla Juul Hansen (Institut für Angewandte Physik, Goethe-Universität Frankfurt) - Antrittsvorlesung
tba
local host: Prof. Dr. René Reifarth | reifarth@physik.uni-frankfurt.de
25.01.2023
PD Dr. Chuan Zhang (Institut für Angewandte Physik, Goethe-Universität Frankfurt) - Habilitations-Antrittsvorlesung
tba
local host: Prof. Dr. Holger Podlech | h.podlech@iap.uni-frankfurt.de
01.02.2023
Prof. Dr. Laura Sagunski (Institut für Theoretische Physik, Goethe-Universität Frankfurt)
tba
local host: NN
08.02.2023
Prof. Dr. Stefan Heusler (Universität Münster)
tba
local host: Prof. Dr. Roger Erb | roger.erb@physik.uni-frankfurt.de
