Room: Seminar Room

Establishing a New Canadian IR-FEL Program of Research

The Canadian research community is planning to create a new national program for IR-FEL-based research. [more]

Quantum sensor networks as exotic field telescopes for multi-messenger astronomy

Multi-messenger astronomy, the coordinated observation of different classes of signals originating from the same astrophysical event, provides a wealth of information about astrophysical processes with far-reaching implications. [more]

Time-resolved ARPES at 88 MHz repetition rate with full 2π collection - Video Conference (for conference link write to Ralph Ernstorfer)

Angle-resolved photoemission spectroscopy (ARPES) is often considered the best way to experimentally determine the ground-state electronic structure of materials. However, although applying ARPES to short-lived excited states via the pump/probe method (tr-ARPES) demands orders of magnitude more data than ground-state ARPES studies, measurements have been forced to work with orders of magnitude lower data rates due to the limits imposed by the repetition rate of available short-pulse extreme-ultraviolet (XUV) light sources and the collection efficiency of photoelectron analyzers. [more]

Dynamic catalytic interfaces: ensembles of metastable states break the rules of catalysis

I will show that dynamic catalytic interfaces exhibit great structural fluxionality in conditions of catalysis, and populate many distinct structural and stoichiometric states, which form a statistical ensemble. [more]

Chemical challenges facing scalable hydrogen production with alkaline membrane electrolyzers

Commercialized membrane electrolyzers use acidic proton exchange membranes (PEMs). These systems offer high performance but require the use of expensive precious-metal catalysts such as IrO2 and Pt that are nominally stable under the locally acidic conditions of the ionomer. [more]

Fluxional catalytic interfaces and how they evolve under realistic conditions: insights from computational studies

Fluxionality, or the presence of and interconversion between multiple possible energetic configurations, is vital for understanding a catalyst as it operates under actual reaction conditions. [more]

New Generation of Atomically Dispersed Electrocatalysts

Platinum Group Metal-free (PGM-free) catalysts have been extensively developed for both Proton Exchange Membrane (PEM) and Alkaline Exchange Membrane (AEM) fuel cells aiming automotive, stationary and portable applications. In this lecture we will address the critical challenges that our team has faced on the way to practical application of such catalysts. [more]

Understanding the Birth of the Catalyst during Pyrolysis Using Synchrotron X-rays

Transition metal-nitrogen-carbon materials (M-N-C catalysts) are promising electrocatalysts in electrochemical applications. High temperature treatment in inert environment (pyrolysis) is the most common method for the synthesis of M-N-C catalysts and critical to achieve high electrocatalyst activity and electronic conductivity. [more]

Operando SXRD/XAS studies of CoOx epitaxial thin films for OER electrocatalysis

Cobalt oxides are among the best earth abundant catalysts for the oxygen evolution reaction (OER) in alkaline and neutral electrolytes. We have undertaken operando studies of two dimensional epitaxial cobalt oxide films [1-2] to gain insights into some questions that remain in debate. [more]

Quantum control of ultracold ion-atom collisions

Hybrid systems of laser-cooled trapped ions and ultracold atoms combined in a single experimental setup have recently emerged as a new platform for fundamental research in quantum physics and chemistry [1]. Reaching the ultracold s-wave quantum regime has been one of the most critical challenges in this field for a long time. Unfortunately, the lowest attainable temperatures in experiments using the Paul ion trap are limited by the possible rf-field-induced heating related to the micromotion. [more]

Bridging scales from surface science to atmospheric chemistry and climate

Joint Seminar of AC and Theory
The development of ambient pressure X-ray photoelectron spectroscopy has from the beginning been motivated and justified by the context of atmospheric sciences, apart from other areas of fundamental and applied surface science. This has come in parallel with the recognition of important surface catalyzed processes in the stratosphere that are essential in ozone destruction. [more]

Surprising Elements of Light

Light-driven chemical reactions power all life on earth and photochemistry has been intensely studied for more than a century, but light continues to provide surprising possibilities in driving and monitoring chemical reactions. [more]

In situ studies of Cu catalysed CO2 electroreduction bysoft X-ray STXM and spectro-ptychography

Soft X-ray scanning transmission microscopy (STXM) is a powerful tool for nanoscale materials analysis. [more]

Four short presentations around the topic ISSP

Dr. Adris Anspoks: Short overview about ISSP // Dr. Aleksejs Kuzmins: X-ray absorption spectroscopy // Dr. Anatolijs Šarakovskis: overview about their activities in spectroscopy // Dr. Gints Kučinskis: Electrochemistry & batteries [more]

Pathways to Enhance Electrochemical CO2 Reduction Identified Through Multi-Scale Modeling Pathways to Enhance Electrochemical CO2 Reduction Identified Through Multi-Scale Modeling

Multi-physical transport processes on multiple scales are occurring in electrochemical devices and components for CO2 electroreduction. These coupled transport processes determine the local environment in the catalyst layer and subsequently also the reaction rates at the catalytic sites. [more]

Ultrafast molecular chirality: a topological connection

I will describe our very recent results on marrying chiral and topological properties in ultrafast electronic response of chiral molecules in gas phase and show that it brings such benefits as new highly efficient (not relying on interaction with magnetic field) and robust chiral observables, in contrast to standard chiroptical methods. [more]

Laser spectroscopy of radioactive atoms and molecules at CRIS-ISOLDE

MP Seminar
Precision experiments based on heavy and polar diatomic molecules have been proposed as a promising pathway to pin down the level of fundamental-symmetry violations in the Universe. [more]

THz SASE and seeded FEL based on high brightness photo injector PITZ

The Photo Injector Test Facility at DESY in Zeuthen (PITZ) develops a prototype of an accelerator-based high-power tunable THz source for pump-probe experiments at the European XFEL. [more]

An Experiment to Measure the Electron's Electric Dipole Moment Using an Ultracold Beam of YbF Molecules

The fact that more matter than antimatter has been produced in the early stages of the universe is unexplained and known as the matter-antimatter-asymmetry problem [1]. One precondition is the combined violation of charge conjugation and parity (CP-violation) which is too small in the Standard Model. In almost all theories, CP-violation is also a precondition for the electron to have an electric dipole moment (de). [more]

A new experiment to measure parity violation in trapped chiral molecular ions

The weak force is predicted to give rise to slightly different structures for left and right-handed chiral molecules, contrary to the common conception that enantiomers are perfect mirror images. [more]

Single photon hot electron ionization of fullerenes

The separation of the time scales of electronic and nuclear motion in clusters and molecules opens the possibility that the electrons can form a transient and highly excited subsystem coexisting with cold nuclear degrees of freedom. [more]

Vibrational Circular Dichroism of Molecular Crystals: The Interplay of Symmetry and Chirality

Chiroptical spectroscopy provides an increasingly important, cost-effective alternative for the study of chiral substances in the solid state. In recent years, vibrational circular dichroism (VCD) – the chiral form of IR absorption spectroscopy – has come into focus as a very sensitive probe of molecular conformation and environment. [more]

Electrochemical surface science of platinum electrodes

This talk will discuss recent insights into the electrochemistry of platinum, highlighting three topics. [more]

Rovibronic Transitions in Molecules: Toward an Exact Approach

Molecules exhibit complex structural and dynamical behavior manifested in their degrees of freedom. The common approach to help us understand this complexity is to start with a zero-order approximation. Beyond the zero-order picture, the voyage to explore the molecular world is just about to begin. [more]

2D Silicates from Ultimate Membranes to Robust Ferromagnets

Silica deposited onto late transition metal surfaces spontaneously forms a 2D van der Waals structure constructed of mirror image planes of rings of corner sharing SiO4 tetrahedra with crystalline and amorphous polymorphs possible. The silica can be deposited by an atomic layer deposition (ALD) process, opening the door to applications. [more]

From Heavy Elements to Peptides: Dynamics, Kinetics, and Thermochemistry

In this presentation, I will review recent studies that utilize guided ion beam tandem mass spectrometry to examine the kinetic energy dependence of ion-molecule reactions. [more]

Superradiance in waveguide-coupled atomic ensembles

The power of the light emitted by a single, excited quantum emitter features a characteristic exponential decay. However, the presence of other, identical emitters can substantially alter the decay dynamics of the ensemble. Such collectively enhanced emission is termed superradiance, and has seen increased interest over the last decade due to its potential applications in quantum technology and metrology. [more]

Watching Femtosecond Molecular Dynamics using Synchrotrons and X-Ray Free-Electron Lasers

Recording real-time movies of dynamical processes in molecules, as, for example, progressing chemical reactions, has been a driving force for many disciplines in fundamental sciences during the last decades. Comparably new are experimental techniques, that address single molecules in the gas phase and that involve coincident single-particle detection for imaging these dynamics are Coulomb explosion imaging and Photoelectron diffraction imaging. [more]

How do chemical bonds break in ultrastrong coupling?

Current efforts for implementing cavity QED in the ultrastrong coupling (USC) regime using molecular vibrations in mid-infrared nanoresonators opens exciting opportunities for exploring novel chemical reactivities that exploit quantum correlations with the electromagnetic vacuum at room temperature. [more]

Efforts of Zhejiang University in advancing clean and sustainable energy conversion

In the presentation, a brief introduction of Zhejiang University (ZJU) and State Key Laboratory of Clean Energy Utilization will be given. An overview of China’s achievements, new goals and new measures in alignment with its Nationally Determined Contributions will be presented. [more]

Identifying the Active Site of Cu/Cu2O for Electrocatalytic Nitrate Reduction Reaction to Ammonia

Copper oxide-derived electrocatalysts are reported to have high activity and selectivity for nitrate electrochemical reduction reaction (NO3RR) to ammonia. However, the cause underlying their enhanced NH3 formation, i.e., the active catalytic site, remains unclear. [more]

Ultrafast, all-optical, and highly enantiosensitive imaging of molecular chirality

Just like our hands, chiral molecules exist in pairs of opposite “mirror twins” called enantiomers, which behave identically unless they interact with another chiral “object”. Distinguishing them is vital, e.g. as most biomolecules are chiral, but it can also be a challenging task. [more]

Time-resolved XPS for molecular electronic movies

Light excitation couples to molecular electrons. The conversion of photon energy into other molecular forms of energy is then determined by a complex interplay of electrons and nuclei, which is out of the scope of the Born-Oppenheimer approximation. [more]

Towards State- and Time-Resolved Fluorescence Spectroscopy of Trapped Molecular Ions

  • MP Department Seminar
  • Date: Jan 15, 2024
  • Time: 11:00 AM c.t. - 12:00 PM (Local Time Germany)
  • Speaker: Jascha Lau
  • Otto-Hahn Awardee of the Biological and Medical Section of the MPG and new Group Leader in the Department of Molcecular Physics
  • Location: Haber Villa
  • Room: Seminar Room
  • Host: Department of Molecular Physics
In this talk, I will give an overview of my postdoctoral and doctoral research, with a particular focus on anion photoelectron spectroscopy and infrared fluorescence spectroscopy, as well as the future research direction of my Otto Hahn Group in the Department of Molecular Physics, which will revolve around fluorescence spectroscopy of trapped molecular ions. [more]

Chirality differentiation and manipulation using rotational spectroscopy

Chirality is ubiquitous in nature and involved in many aspects of life, making it an important phenomenon to understand. The enantiomers of chiral molecules have identical physical properties (despite the predicted small contributions due to parity-violating weak interactions), while their chemical and biochemical properties can differ dramatically. Due to these different behaviors, the development of sensitive spectroscopic methods that can differentiate and/or separate molecules of opposite handedness, particularly in complex sample mixtures, are of utmost importance. [more]

Following the Dynamics of Nanoparticle Surfaces in Search of New Catalytic Pathways

Understanding mechanisms of work for a wide range of applied nanomaterials begins with identifying “active units” in operating conditions, zooming in on the “active sites” and ends with a model explaining their role for functioning of the material or device. [more]

Wet-chemical synthesis and catalytic properties of metal clusters of small atomicity without protecting ligands

[more]

Diatomic Molecules: from hot to ultracold

In this talk I will be discussing a new ultracold molecules experiment that I'm setting up at Durham University. Ultracold molecules offer possibilities for a range of applications from controlled chemistry and testing beyond standard model physics, to quantum simulation. In this talk I will focus on what makes cold molecules promising candidates for these applications, and how we are working towards harnessing power this experimentally. [more]

Will a single two-level atom simultaneously scatter two photons?

The interaction of light with a single two-level emitter is the most fundamental process in quantum optics, and is key to many quantum applications. [more]

Towards atomic diffraction through single-layer graphene

Using hydrogen atoms with a velocity of up to 120 000 m/s, we predict a high probability of coherently diffracting atoms through the natural lattice of the crystalline gratings. [more]

Advances in Operando Spectroscopy and Microscopy of Heterogeneous Catalysts to Make the Fuels, Chemicals and Materials of the Future

[more]

Manoeuvring chemical reactions one degree of freedom at a time

The combined use of electric fields, magnetic fields and laser light affords us an ever-increasing level of control over the properties of atoms and molecules, enabling reactivity to be probed as a function of their various degrees of freedom1. Here, we discuss how electrostatic deflection2,3 can be employed to disentangle the reactivity of molecules in different rotational states4, or with different spatial orientation of their constituent atoms5. [more]

Investigating supercooled water with laser- and X-ray spectroscopy

Water exhibits a variety of anomalies, some of which are particularly pronounced in the supercooled region. Its specific properties and possible structural and dynamical origins have been extensively studied, leading to the still inconclusive theory that water may exist in two structural motifs at low temperatures. [more]

Quantum sensors on Earth and in space

The development of quantum sensors has been one of the most important – and arguably currently most advanced – pillars of the ongoing efforts toutilize quantum technologies for practical applications. [more]

Quantum Science and Technologies using Ultracold Molecules

Ultracold molecules have a wide range of applications in quantum science and technologies spanning from fundamental physics to quantum computing and quantum chemistry, and this has sparked great interest in laser cooling of molecules. [more]

Low energy electron emission from charge exchange of slow highly charged ions with solid surfaces

The interaction of slow ions with condensed matter leads to the emission of electrons with energies typically well below 20eV. [more]

Extracting Chemistry From Core-Level Spectroscopies: Combining Theory And Experiment

The goal of X-Ray Photoelectron Spectroscopy, XPS, and X-Ray Adsorption Near Edge Spectroscopy, XANES, is to obtain information about the chemical interactions and bonding in the compound studied. [more]

Mass spectrometry in electrocatalysis research

Understanding reaction mechanisms is the key to developing new chemical reactions. [more]

New Experimental Platforms for Molecular Polaritonics

Polaritons are hybrid light-matter states with unusual properties that arise from strong interactions between a molecular ensemble and the confined electromagnetic field of an optical cavity. [more]

Thermochemistry: It’s not boring anymore!!!

One of the important areas of application for modern high-accuracy quantum chemistry is in the calculation of molecular energetics. [more]

Homogeneous Bose gases driven far from thermal equilibrium

Far-from-equilibrium systems are ubiquitous in nature, such as in glasses, active matter, and turbulence, but are still poorly understood when compared to the unifying description of thermodynamics for systems in thermal equilibrium. [more]

Tabletop transient NEXAFS spectroscopy with a laser-produced plasma source

Laboratory-based laser-produced plasma (lpp) soft X-ray sources achieve high brightness and stability in the EUV and XUV range. With emission energies beyond 1.6 keV and stable operating times in the range of hours, they already offer numerous experimental possibilities that are independent and supplemental to investigations at large scale facilities. [more]

Brain States and the Mystery of Cognition: Using magnetic resonance imaging (MRI) to map the brain

Patterns of neural activity distributed across the brain are termed “brain states”. [more]

Live-Ptychography: How to Solve a Quantitative Live Object Transfer Function in Microscopy?

In transmission electron microscopy we record the intensity of an electron wave that has been created by the illumination optics, transmitted through a thin specimen, and then projected onto a detector. From that recorded intensity we want to learn about the specimen. [more]

Insights into Scientific Publishing

Publishing your work in an influential journal begins with good research, but there is much more to it. This interactive talk aims to demystify the editorial process from the perspective of an editor at a Nature Portfolio journal. [more]

Enhanced reactivity and selectivity of oxide-supported single atom catalysts: it is all in the local atomic environment!

Singly dispersed transition metal atoms on oxide surfaces, the so-called single atom catalyst (SAC) have recently been shown to attain chemical activity and selectivity for several technologically important reactions that surpass those of Pt single crystal surfaces, the prototype exemplary catalyst but with a large price tag. Apart from being cost-effective, single atom catalyst offer excellent opportunities for tuning their local environment and thereby their oxidation state, local coordination, and electronic structure. In this talk, I will present results of collaborative work with several experimental groups on transition metal atoms anchored on surfaces, with and without ligands, that have the potential to be cost-effective catalysts with high activity and product selectivity. [more]

Redox Flow Batteries: Navigating an Emerging Design Space

[more]

Quantum mixtures of atoms and ions: road to ultracold

Ultracold atoms and trapped ions are among the most formidable sources of coherent matter available in a laboratory. In a hybrid quantum system of atoms and ions, ultracold atoms and trapped ions are combined in a single experimental apparatus, thus realizing an innovative platform to experimentally investigate open problems of quantum physics from a new standpoint. [more]

About thermionic electron emission and associative ionization

[more]

Big data, small data, complex data, more data, metadata − Tackling current and future challenges of scientific IT

Science faces the challenge of ever-increasing and more complex data that push existing evaluation methods to their limits. Additional requirements such as reproducibility, data security, consistency, transferability, and reusability cause significant effort and are hardly met by traditional manual workflows. [more]

Dynamics of CO2 activation by transition metal ions - The importance of intersystem crossing

Understanding chemistry at the level of a reactive collision, that is how atoms rearrange during the reactive event, is a fundamental question in chemistry as well as in physics. [more]

Systems Metrology at ZEISS Semiconductor Manufacturing Technology

Precise optics produced by ZEISS Semiconductor Manufacturing Technology (SMT) are a centerpiece of ASML photolithography machines. These tools are indispensable for digitalization: over 80% of today’s microchips are manufactured on ASML wafer steppers and scanners. [more]

Atomic-level insights in catalytic nanomaterials by in situ surface spectroscopy and microscopy

[more]

Missing Ions in Laboratory and Space

Molecular ions play a vital role in space because they are readily formed by the ubiquitous cosmic ray ionisation and often undergo rapid chemical reactions even at the low temperatures of the interstellar medium. [more]

Surface chemistry and catalysis of uniform Cu2O nanocrystals with well-defined shapes

[more]

Angular momentum of small molecules: quasiparticles and topology

I will present our recent findings on small molecules kicked by laser pulses. First, I will describe a technique that allows to probe highly excited molecular states in the presence of an environment, such as superfluid 4He, and a corresponding theory based on angulon quasiparticles that is capable of describing such states, in good agreement with experiment. [more]

Fe-doped Co3O4(111) spinel oxide epitaxial thin films for OER

[more]

Using Gradients in Structural Disorder to Refine Our Understanding of Electrocatalysts

[more]

Hydrogen/Deuterium 1S-3S spectroscopy and beyond

In this talk, I would like to present our latest result on the 1S-3S two-photon continuous wave spectroscopy of Deuterium atoms. [more]

Record Stability and Accuracy in a Strontium Optical Clock

Atomic clocks have revolutionized precision measurement. Each advancement in timekeeping, from pendulum clocks to quartz oscillators, from microwave atomic clocks to optical atomic clocks, opens the door to new areas of physics. [more]

Ordered organic monolayers on silicon

[more]

An introduction to resonant nonlinear optical frequency conversion

Direct single-mode cw laser sources cover a broad wavelength interval for an almost unimaginable range of applications. [more]

Ionization-induced dynamics in water and aqueous solutions uncovered via ultrafast time-resolved x-ray absorption spectroscopy and theoretical modeling

Our understanding of the immediate response of matter to ionization is crucial for many fields. [more]

Para-ortho H2 conversion by collisions with O2 and NO

It has been known since 1927 that two modifications of hydrogen exist: para-H2 and ortho-H2. Pure para-H2 can be prepared by leading a 1:3 para:ortho mixture of “normal” H2 over a catalyst at low temperature. In 1933 Farkas and Sachsse [1] measured the rate coefficient of para-ortho H2 conversion in gas mixtures with the paramagnetic open-shell molecules O2, NO, and NO2. [more]

Broken Patterns - Anomalies in the Spectra of Aluminum Monofluoride

Usually, rotational spectra of diatomics can be described by a handful of spectroscopic parameters. [more]

Synthetic Materials Chemistry for a Green Hydrogen Future and Beyond

CatLab Lectures 2024/25
The transition to a sustainable energy future relies on developing efficient and scalable methods for green hydrogen production, a fundamental factor for decarbonizing energy and chemical industries. Electrocatalysis plays a pivotal role by enabling efficient cathodic hydrogen evolution and anodic oxygen evolution reaction. [more]

Testing the Standard Model with Molecules

Search for violation of fundamental symmetries provides a unique opportunity for testing the Standard Model. Atomic and molecular experiments offer a low energy and comparatively inexpensive alternative to high energy accelerator research in this field. [more]

The Advanced Research Center for NanoLithography: better chips-making-tools using fundamental physics research.

ARCNL in Amsterdam started in 2014 upon an initiative of ASML. [more]

Operando Soft X-ray Spectroscopies for Observing Reactions at Thermo- and Electrocatalytic Interfaces

Laser excitation and spectroscopy of the Thorium-229 nucleus

Among all known isotopes, Thorium-229 has the lowest nuclear excited state, only 8.4 eV above the ground state. [more]

Simulations in Electrochemical Systems

Coupled Catalytic Reactions and Key Technologies for Sustainable Chemical Production

[more]

Bridging Native and Intrinsic Structures of Microhydrated Biomolecules by Cryogenic Ion Spectroscopy

Over the years, cryogenic ion spectroscopy has established itself as a powerful technique for studying the structures and properties of biomolecules in the gas phase. [more]

Bimetallic Catalyst for Hydrogenation Reactions

CatLab Lectures 2024/25
A series of independent lectures on fundamentals and latest developments in heterogeneous catalysis, thin film technology, physical chemistry, process engineering and materials design. [more]

Nano- and microelelctroanalytic methods for understanding electrocatalysts

[more]

Advanced electrochemical tools to characterise nano-electrocatalysts

[more]

Structural Dynamics of Water, Ice, and Chemical Reactions Revealed by X-ray Experiments at FELs

X-ray science has evolved dramatically with the use of X-ray free electron lasers (XFELs) that can generate ultrashort X-ray pulses with unprecedented brilliance and coherence. [more]

How to Make Fuels and Chemicals with Sunlight: Artificial Photosynthesis

CatLab Lectures 2024/25
Artificial photosynthesis offers a transformative approach to sustainable fuel and chemical production by mimicking natural photosynthesis to convert sunlight, CO₂, and water into value-added products. This presentation highlights recent progress in developing advanced photoelectrodes and tailoring catalytic microenvironments to enhance reaction efficiency and selectivity. [more]

Spectroscopic investigation of proton bonding at sub-kelvin temperatures

The proton bond is a pivotal chemical motif with significant implications across science and technology, yet its quantum chemical description is challenged by nuclear and charge delocalization effects. [more]

Catalysts of Change: Advanced Materials Steering Health and Energy Transition

CatLab Lectures 2024/25
Advanced materials are driving innovation across all fields of technology, ranging from construction and mechanical engineering, automotive and electromobility, to medical technology, energy storage and conversion technologies, and microelectronics. [more]

Progress in laser cooling the AlF molecule

The aluminium monofluoride molecule (AlF) is a promising candidate for laser cooling and trapping at high densities. [more]

Deciphering the Structure of Single Active Sites Under In Situ and Operando Conditions Using X-ray Absorption Spectroscopy

CatLab Lectures 2024/25
Understanding the structure of catalysts under relevant reaction conditions is crucial, as their active sites often undergo dynamic changes. These transformations can significantly influence the catalytic performance, emphasizing the importance of employing operando techniques that enable real-time monitoring. This seminar will explore the application of X-ray Absorption Spectroscopy (XAS) to identify spectral signatures and molecular structures of active sites under in situ and operando conditions. XAS is particularly advantageous for such studies due to its chemical selectivity and sensitivity to the local atomic environment, offering fundamental insights into the electronic and structural properties of the investigated materials. [more]

Chirality and the electron spin- A miraculous match

Spin based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. [more]

Photoelectron and fluorescence spectroscopy of cryogenically cooled ions

Cryogenic ion traps combined with buffer gas cooling provide ideal conditions for preparing molecular ions in their vibrational ground states. [more]

Robots and the Search for Universal Intelligence: How Machines Learn to Move, Think, and Adapt

[more]

Matter-wave interferometry from electrons to nanoparticles - recent ideas and applications

Modern matter-wave experiments cover a broad mass range from single electrons to molecules consisting of hundreds of atoms. Levitated optomechanics promises to be-come a platform for matter waves of nanoparticles weighing a billion atomic mass units. [more]

Deciphering spectral signatures of proton delocalization in complexes of hydroxide and hydronium ions with water molecules

One class of system where explorations of larger complexes is particularly instructive involves complexes of ions with water molecules. In these systems the cooperative nature of the hydrogen bond that are formed leads to large changes in the strengths of the ion-water interactions as more water molecules are introduced, and this, in turn, has a large effect on the spectroscopy. [more]

Photoelectron Circulardichroism in the Photodetachment of Electrosprayed Anions

Research aiming at the quantification of molecular chirality by chiroptical techniques continues to attract a significant amount of interest in chemistry, physics, biology and pharmacology. [more]

Quantum effects in collisions between rare gas atoms and diatomic molecule ions

Using a combination between both theoretical and experimental techniques, we are able to understand Feshbach resonances occurring in collisions between atoms and molecules, such as for instance Ne-H2+ and Ne-HD+, at a fundamental level. [more]

Hitler's Atomic Bomb

After the discovery of nuclear fission, scientists in several different countries, including National Socialist Germany, brought the potential military applications of fission to the attention of political and military authorities. [more]

TH-Seminar: Prof. Lars Borchardt

[more]
Web-View
Print Page
Open in new window
Estimated DIN-A4 page-width
Go to Editor View