E
Eckart Rühl
Researcher at Free University of Berlin
Publications - 254
Citations - 6337
Eckart Rühl is an academic researcher from Free University of Berlin. The author has contributed to research in topics: Photoionization & Excited state. The author has an hindex of 40, co-authored 246 publications receiving 5640 citations. Previous affiliations of Eckart Rühl include McMaster University & University of Osnabrück.
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Skin penetration and cellular uptake of amorphous silica nanoparticles with variable size, surface functionalization, and colloidal stability.
Fiorenza Rancan,Qi Gao,Christina Graf,Stefan Troppens,Sabrina Hadam,Steffen Hackbarth,Cynthia Kembuan,Ulrike Blume-Peytavi,Eckart Rühl,Jürgen Lademann,Annika Vogt +10 more
TL;DR: Despite partial particle aggregation occurring after transfer in physiological media, particles were taken up by skin cells in a size-dependent manner, and functionalization of the particle surface with positively charged groups enhanced the in vitro cellular uptake.
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Controlled near-field enhanced electron acceleration from dielectric nanospheres with intense few-cycle laser fields
Sergey Zherebtsov,Thomas Fennel,J. Plenge,E. Antonsson,Irina Znakovskaya,Adrian Wirth,O. Herrwerth,Frederik Süßmann,Christian Peltz,Izhar Ahmad,Sergei A. Trushin,Vladimir Pervak,Stefan Karsch,Marc J. J. Vrakking,Burkhard Langer,Christina Graf,Mark I. Stockman,Ferenc Krausz,Eckart Rühl,Matthias F. Kling +19 more
TL;DR: In this article, the authors demonstrate the attosecond control of the collective electron motion and directional emission from isolated dielectric (SiO2) nanoparticles with phase-stabilized few-cycle laser fields.
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Surface Functionalization of Silica Nanoparticles Supports Colloidal Stability in Physiological Media and Facilitates Internalization in Cells
Christina Graf,Qi Gao,Irene Schütz,Christelle Njiki Noufele,Wentao Ruan,Uta Posselt,Elena Korotianskiy,Daniel Nordmeyer,Fiorenza Rancan,Sabrina Hadam,Annika Vogt,Jürgen Lademann,Volker Haucke,Eckart Rühl +13 more
TL;DR: The results indicate that a high colloidal stability of nanoparticles combined with an initial charge-driven adsorption on the cell membrane is essential for efficient cellular uptake.
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Homogeneous nucleation rates of supercooled water measured in single levitated microdroplets.
B. Krämer,O. Hübner,H. Vortisch,Ludger Wöste,T. Leisner,Martin Schwell,Eckart Rühl,Helmut Baumgärtel +7 more
TL;DR: In this paper, the size of a single droplet is continuously measured by analyzing the angle-resolved light scattering pattern of the droplets with classical Mie theory, and the freezing process is detected by a pronounced increase in the depolarization of the scattered light.
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A general method for the controlled embedding of nanoparticles in silica colloids.
TL;DR: A novel method for the controlled embedding of multiple nanoparticles of various materials, such as gold nanoparticles, quantum dots, and magnetic nanoparticle, in silica colloids is presented and it is found that the optical properties of the nanoparticles are retained.