Zobrazeno 1 - 10
of 320
pro vyhledávání: '"Elsäßer, Thomas"'
Autor:
McCaul, Gerard, Runge, Matthias, Woerner, Michael, Talbayev, Diyar, Elsaesser, Thomas, Bondar, Denys I.
A surprising result from the theory of quantum control is the degree to which the properties of a physical system can be manipulated. Both atomic and many-body solid state models admit the possibility of creating a 'driven imposter', in which the opt
Externí odkaz:
http://arxiv.org/abs/2409.05332
The nonlinear polaronic response of electrons solvated in liquid 2-propanol is studied by two-dimensional terahertz spectroscopy. Solvated electrons with a concentration of c$_e \approx$ 800 $\mu$M are generated by femtosecond photoionization of alco
Externí odkaz:
http://arxiv.org/abs/2310.02689
Publikováno v:
The Journal of Physical Chemistry B 2022 126 (14), 2621-2634
The solvated electron represents an elementary quantum system in a liquid environment. Electrons solvated in water have raised strong interest because of their prototypical properties, their role in radiation chemistry, and their relevance for charge
Externí odkaz:
http://arxiv.org/abs/2203.11840
Publikováno v:
Journal of Chemical Physics 2021
Nonlinear terahertz (THz) spectroscopy relies on the interaction of matter with few-cycle THz pulses of electric field amplitudes up to megavolts/centimeter (MV/cm). In condensed-phase molecular systems, both resonant interactions with elementary exc
Externí odkaz:
http://arxiv.org/abs/2112.03591
Publikováno v:
The 22nd International Conference on Ultrafast Phenomena 2020, F. K\"artner, M. Khalil, R. Li, F. L\'egar\'e, and T. Tahara, eds., OSA Technical Digest (Optical Society of America, 2020), paper M4B.9
The distinct structures of contact ion pairs in water are identified. Nonlinear infrared (IR) spectroscopy and theoretical calculations allow for the separation and assignment of spectral features and interactions.
Externí odkaz:
http://arxiv.org/abs/2109.01612
Publikováno v:
The 22nd International Conference on Ultrafast Phenomena 2020, F. K\"artner, M. Khalil, R. Li, F. L\'egar\'e, and T. Tahara, eds., OSA Technical Digest (Optical Society of America, 2020), paper M2A.1
We discern hydration geometries around the sugar-phosphate-backbone of an RNA double helix at the molecular level. RNA disordering upon melting is connected with a transition from ordered water structures towards local phosphate group hydration shell
Externí odkaz:
http://arxiv.org/abs/2109.00500
Autor:
Ghalgaoui, Ahmed, Fingerhut, Benjamin P., Reimann, Klaus, Elsaesser, Thomas, Woerner, Michael
Publikováno v:
Physical Review Letters 126, 097401 (2021)
The terahertz (THz) response of solvated electrons in liquid water is studied in nonlinear ultrafast pump-probe experiments. Free electrons with concentrations from c_e = 4 to 140 \times 10-6 moles/liter are generated by high-field THz or near-infrar
Externí odkaz:
http://arxiv.org/abs/2108.11378
Publikováno v:
J. Phys. Chem. B 2021, 125, 15, 3899-3908
Electric interactions have a strong impact on the structure and dynamics of biomolecules in their native water environment. Given the variety of water arrangements in hydration shells and the femto- to subnanosecond time range of structural fluctuati
Externí odkaz:
http://arxiv.org/abs/2108.11379
Publikováno v:
J. Phys. Chem. B 2021, 125, 740-747
Ions interacting with hydrated RNA play a central role in defining its secondary and tertiary structure. While spatial arrangements of ions, water molecules, and phosphate groups have been inferred from X-ray studies, the role of electrostatic and ot
Externí odkaz:
http://arxiv.org/abs/2108.11178
Autor:
Ghalgaoui, Ahmed, Koll, Lisa-Marie, Schütte, Bernd, Fingerhut, Benjamin P., Reimann, Klaus, Woerner, Michael, Elsaesser, Thomas
Liquid water at ambient temperature displays ultrafast molecular motions and concomitant fluctuations of very strong electric fields originating from the dipolar H2O molecules. We show that such random intermolecular fields induce tunnel ionization o
Externí odkaz:
http://arxiv.org/abs/2008.10231