Markus Koch
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View article: Real-time tracking of energy flow in cluster formation
Real-time tracking of energy flow in cluster formation Open
Femtosecond time-resolved spectroscopy has shaped our understanding of light-matter interaction at the atomic level. However, the photoinduced formation of chemical bonds, especially for larger aggregates, has evaded observation due to dif…
View article: Activation of CD8<sup>+</sup> T Cells in Chronic Obstructive Pulmonary Disease Lung
Activation of CD8<sup>+</sup> T Cells in Chronic Obstructive Pulmonary Disease Lung Open
Rationale: Despite the importance of inflammation in chronic obstructive pulmonary disease (COPD), the immune cell landscape in the lung tissue of patients with mild-moderate disease has not been well characterized at the single-cell and m…
View article: Surface design for dropwise condensation: A theoretical and experimental study
Surface design for dropwise condensation: A theoretical and experimental study Open
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .
View article: Dynamics of Above-Threshold Ionization and Laser-Assisted Electron Scattering inside Helium Nanodroplets
Dynamics of Above-Threshold Ionization and Laser-Assisted Electron Scattering inside Helium Nanodroplets Open
Laser-assisted electron scattering (LAES) is a fundamental three body interaction process that enables energy transfer between electrons and photons in the presence of matter. Here, we focus on the multiscattering regime of electrons gener…
View article: Transient absorption microscopy setup with multi-ten-kilohertz shot-to-shot subtraction and discrete Fourier analysis
Transient absorption microscopy setup with multi-ten-kilohertz shot-to-shot subtraction and discrete Fourier analysis Open
Recording of transient absorption microscopy images requires fast detection of minute optical density changes, which is typically achieved with high-repetition-rate laser sources and lock-in detection. Here, we present a highly flexible an…
View article: Transient absorption microscopy setup with multi-ten-kilohertz\n shot-to-shot subtraction and discrete Fourier analysis
Transient absorption microscopy setup with multi-ten-kilohertz\n shot-to-shot subtraction and discrete Fourier analysis Open
Recording of transient absorption microscopy images requires fast detection\nof minute optical density changes, which is typically achieved with\nhigh-repetition-rate laser sources and lock-in detection. Here, we present a\nhighly flexible…
View article: Dimer photofragmentation and cation ejection dynamics in helium nanodroplets
Dimer photofragmentation and cation ejection dynamics in helium nanodroplets Open
We present femtosecond pump–probe photoionization experiments with indium dimers (In 2 ) solvated in helium nanodroplets (He N ), and identify an ionization pathway leading to ion ejection from the droplet, enabling ion-electron correlatio…
View article: Ultrafast Dynamics in Helium Droplets
Ultrafast Dynamics in Helium Droplets Open
Helium nanodroplets are peculiar systems, as condensed superfluid entities on the nanoscale, and as vessels for studies of molecules and molecular aggregates and their quantum properties at very low temperature. For both aspects, the dynam…
View article: Eliapixant is a selective P2X3 receptor antagonist for the treatment of disorders associated with hypersensitive nerve fibers
Eliapixant is a selective P2X3 receptor antagonist for the treatment of disorders associated with hypersensitive nerve fibers Open
ATP-dependent P2X3 receptors play a crucial role in the sensitization of nerve fibers and pathological pain pathways. They are also involved in pathways triggering cough and may contribute to the pathophysiology of endometriosis and overac…
View article: Laser-subcycle control of electronic excitation across system boundaries
Laser-subcycle control of electronic excitation across system boundaries Open
We report on the results of a joint experimental and numerical study on the sub-cycle laser field-driven electron dynamics that underlie the population of highly excited electronic states in multiply ionized argon dimers by electron recapt…
View article: Observation of laser-assisted electron scattering in superfluid helium
Observation of laser-assisted electron scattering in superfluid helium Open
Measured and simulated electron spectra for the study entitled "Observation of laser-assisted electron scattering in superfluid helium". Figure 1a (fig1_a.csv) column 1: simulated electron energy in eV column 2: log_10(simulated electron …
View article: Observation of laser-assisted electron scattering in superfluid helium
Observation of laser-assisted electron scattering in superfluid helium Open
Measured and simulated electron spectra for the study entitled "Observation of laser-assisted electron scattering in superfluid helium". Figure 1a (fig1_a.csv) column 1: simulated electron energy in eV column 2: log_10(simulated electron …
View article: Observation of laser-assisted electron scattering in superfluid helium
Observation of laser-assisted electron scattering in superfluid helium Open
Laser-assisted electron scattering (LAES), a light-matter interaction process that facilitates energy transfer between strong light fields and free electrons, has so far been observed only in gas phase. Here we report on the observation of…
View article: Laser-Induced Electron Transfer in the Dissociative Multiple Ionization of Argon Dimers
Laser-Induced Electron Transfer in the Dissociative Multiple Ionization of Argon Dimers Open
We report on an experimental and theoretical study of the ionization-fragmentation dynamics of argon dimers in intense few-cycle laser pulses with a tagged carrier-envelope phase. We find that a field-driven electron transfer process from …
View article: Long-Lived Nuclear Coherences inside Helium Nanodroplets
Long-Lived Nuclear Coherences inside Helium Nanodroplets Open
Much of our knowledge about dynamics and functionality of molecular systems has been achieved with femtosecond time-resolved spectroscopy. Despite extensive technical developments over the past decades, some classes of systems have eluded …
View article: Revealing Ultrafast Population Transfer between Nearly Degenerate Electronic States
Revealing Ultrafast Population Transfer between Nearly Degenerate Electronic States Open
The response of a molecule to photoexcitation is governed by the coupling of its electronic states. However, if the energetic spacing between the electronically excited states at the Franck-Condon window becomes sufficiently small, it is i…
View article: Bayesian Analysis of Femtosecond Pump-Probe Photoelectron-Photoion Coincidence Spectra with Fluctuating Laser Intensities
Bayesian Analysis of Femtosecond Pump-Probe Photoelectron-Photoion Coincidence Spectra with Fluctuating Laser Intensities Open
This paper employs Bayesian probability theory for analyzing data generated in femtosecond pump-probe photoelectron-photoion coincidence (PEPICO) experiments. These experiments allow investigating ultrafast dynamical processes in photoexci…
View article: Femtosecond solvation dynamics of indium dimers inside superfluid helium nanodroplets
Femtosecond solvation dynamics of indium dimers inside superfluid helium nanodroplets Open
Indium dimers (In 2 ) solvated inside helium nanodroplets are studied with femtosecond photoelectron and photoion spectroscopy. The solvation dynamics triggered by photoexcitation of the In 2 include expansion of the solvation shell and do…
View article: Bayesian probability theory to identify false coincidences in coincidence experiments
Bayesian probability theory to identify false coincidences in coincidence experiments Open
We describe a Bayesian formalism to analyse femtosecond pump-probe photoionization experiments with photoelectron-photoion coincidence (PEPICO) detection. This approach overcomes the drawback of extraordinary long data acquisition times of…
View article: Femtosecond dopant-to-solvent energy transfer inside helium nanodroplets
Femtosecond dopant-to-solvent energy transfer inside helium nanodroplets Open
Photoexcitation of atoms solvated inside superfluid helium nanodroplets is investigated with femtosecond photoelectron spectroscopy. Expansion of the solvation shell within about 600 fs is observed as transient photoelectron peak shift. Fo…
View article: Femtosecond photoexcitation dynamics inside a quantum solvent
Femtosecond photoexcitation dynamics inside a quantum solvent Open
The observation of chemical reactions on the time scale of the motion of electrons and nuclei has been made possible by lasers with ever shortened pulse lengths. Superfluid helium represents a special solvent that permits the synthesis of …
View article: Analysis of femtosecond pump-probe photoelectron-photoion coincidence measurements applying Bayesian probability theory
Analysis of femtosecond pump-probe photoelectron-photoion coincidence measurements applying Bayesian probability theory Open
Ultrafast dynamical processes in photoexcited molecules can be observed with\npump-probe measurements, in which information about the dynamics is obtained\nfrom the transient signal associated with the excited state. Background signals\npr…
View article: Electrically detected magnetic resonance of carbon dangling bonds at the Si-face 4H-SiC/SiO2 interface
Electrically detected magnetic resonance of carbon dangling bonds at the Si-face 4H-SiC/SiO2 interface Open
SiC based metal-oxide-semiconductor field-effect transistors (MOSFETs) have gained a significant importance in power electronics applications. However, electrically active defects at the SiC/SiO2 interface degrade the ideal behavior of the…
View article: The Role of Rydberg–Valence Coupling in the Ultrafast Relaxation Dynamics of Acetone
The Role of Rydberg–Valence Coupling in the Ultrafast Relaxation Dynamics of Acetone Open
The electronic structure of excited states of acetone is represented by a Rydberg manifold that is coupled to valence states which provide very fast and efficient relaxation pathways. We observe and characterize the transfer of population …
View article: Enhanced ionization of acetylene in intense laser pulses is due to energy upshift and field coupling of multiple orbitals
Enhanced ionization of acetylene in intense laser pulses is due to energy upshift and field coupling of multiple orbitals Open
Synopsis We describe a new enhanced ionization mechanism for polyatomic molecules. It works via a significant energy up-shift of valence orbitals for stretched bonds and a strong concomitant increase in the coupling between multiple molecu…
View article: Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals
Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals Open
We present the results of a combined experimental and numerical study on strong-field ionisation of acetylene performed with the aim of identifying the mechanism behind the previously reported surprisingly large multi-electron ionisation p…
View article: Direct observation of a photochemical activation energy: a case study of acetone photodissociation
Direct observation of a photochemical activation energy: a case study of acetone photodissociation Open
The ability to observe and quantify the conversion of electronic potential energy to vibrational kinetic energy in a molecule after photoexcitation is essential to understand and control the outcome of photoinduced molecular fragmentation.…
View article: Front Matter: Volume 9776
Front Matter: Volume 9776 Open
A unique citation identifier (CID) number is assigned to each article at the time of publication.Utilization of CIDs allows articles to
View article: Application of a Patient Derived Xenograft Model for Predicative Study of Uterine Fibroid Disease
Application of a Patient Derived Xenograft Model for Predicative Study of Uterine Fibroid Disease Open
Human uterine fibroids, benign tumors derived from the smooth muscle layers of the uterus, impose a major health burden to up to 50% of premenopausal women in their daily life. To improve our understanding of this disease, we developed and…