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Works (50 of 52)

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Visualizing Standing Light Waves in Continuous-Beam Transmission Electron Microscopy

ACS Photonics
2025-02-19 | Journal article
DOI: 10.1021/acsphotonics.4c01824
Contributors: Jonathan T. Weber; Niklas Müller; Alexander Schröder; Sascha Schäfer
Source: check_circle
Crossref

Few-nm tracking of current-driven magnetic vortex orbits using ultrafast Lorentz microscopy

Communications Physics
2020-12 | Journal article
DOI: 10.1038/s42005-020-0301-y
Part of ISSN: 2399-3650
Source: Self-asserted source
Sascha Schäfer

High-purity free-electron momentum states prepared by three-dimensional optical phase modulation

2020-03-04 | Preprint
ARXIV: arXiv:2003.01938v1
Source: Self-asserted source
Sascha Schäfer

A vapor-phase-assisted growth route for large-scale uniform deposition of MoS2 monolayer films

RSC Advances
2019 | Journal article
DOI: 10.1039/c8ra08626e
Part of ISSN: 2046-2069
Source: Self-asserted source
Sascha Schäfer

Coulomb interactions in high-coherence femtosecond electron pulses from tip emitters

Structural Dynamics
2019-01 | Journal article
DOI: 10.1063/1.5066093
Part of ISSN: 2329-7778
Source: Self-asserted source
Sascha Schäfer

Nanoscale Mapping of Ultrafast Magnetization Dynamics with Femtosecond Lorentz Microscopy

Physical Review X
2018-08-29 | Journal article
DOI: 10.1103/physrevx.8.031052
Part of ISSN: 2160-3308
Source: Self-asserted source
Sascha Schäfer

Structural dynamics probed by high-coherence electron pulses

MRS Bulletin
2018-07 | Journal article
DOI: 10.1557/mrs.2018.153
Part of ISSN: 0883-7694
Part of ISSN: 1938-1425
Source: Self-asserted source
Sascha Schäfer

Phase ordering of charge density waves traced by ultrafast low-energy electron diffraction

Nature Physics
2018-02 | Journal article
DOI: 10.1038/nphys4309
Part of ISSN: 1745-2473
Part of ISSN: 1745-2481
Source: Self-asserted source
Sascha Schäfer

Nanoscale diffractive probing of strain dynamics in ultrafast transmission electron microscopy

Structural Dynamics
2018-01 | Journal article
DOI: 10.1063/1.5009822
Part of ISSN: 2329-7778
Source: Self-asserted source
Sascha Schäfer

Attosecond electron pulse trains and quantum state reconstruction in ultrafast transmission electron microscopy

Nature Photonics
2017-12 | Journal article
DOI: 10.1038/s41566-017-0045-8
Part of ISSN: 1749-4885
Part of ISSN: 1749-4893
Source: Self-asserted source
Sascha Schäfer

Nanoscale magnetic imaging using circularly polarized high-harmonic radiation

Science Advances
2017-12 | Journal article
DOI: 10.1126/sciadv.aao4641
Part of ISSN: 2375-2548
Source: Self-asserted source
Sascha Schäfer

Nanotip-based photoelectron microgun for ultrafast LEED

Structural Dynamics
2017-07 | Journal article
DOI: 10.1063/1.4982947
Contributors: Gero Storeck; Simon Vogelgesang; Murat Sivis; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Ultrafast sublattice pseudospin relaxation in graphene probed by polarization-resolved photoluminescence

Physical Review B
2017-06 | Journal article
DOI: 10.1103/physrevb.95.241412
Contributors: Thomas Danz; Andreas Neff; John H. Gaida; Reiner Bormann; Claus Ropers; Sascha Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Ultrafast transmission electron microscopy using a laser-driven field emitter: Femtosecond resolution with a high coherence electron beam

Ultramicroscopy
2017-05 | Journal article
DOI: 10.1016/j.ultramic.2016.12.005
Part of ISSN: 0304-3991
Source: Self-asserted source
Sascha Schäfer

Light-Induced Metastable Magnetic Texture Uncovered byin situLorentz Microscopy

Physical Review Letters
2017-03-01 | Journal article
DOI: 10.1103/physrevlett.118.097203
Part of ISSN: 0031-9007
Part of ISSN: 1079-7114
Source: Self-asserted source
Sascha Schäfer

Few-nanometer femtosecond electron probe pulses in ultrafast transmission electron microscop

International Conference on Ultrafast Phenomena
2016 | Conference paper
DOI: 10.1364/up.2016.uth2b.5
Contributors: Armin Feist; Katharina E. Echternkamp; Reiner Bormann; Nara Rubiano da Silva; Marcel Möller; Wenxi Liang; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Optically induced nanoscale networks of topological magnetic defects

International Conference on Ultrafast Phenomena
2016 | Conference paper
DOI: 10.1364/up.2016.uth4a.44
Contributors: Tim Eggebrecht; Marcel Möller; Jan-Gregor Gatzmann; Nara Rubiano da Silva; Armin Feist; Ulrike Martens; Henning Ulrichs; Markus Münzenberg; Claus Ropers; Sascha Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Probing the emergence of complex charge-density waves at surfaces by time-resolved low-energy electron diffraction

International Conference on Ultrafast Phenomena
2016 | Conference paper
DOI: 10.1364/up.2016.uth2b.3
Contributors: Simon Schweda; Gero Storeck; Sebastian Schramm; Kai Rossnagel; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Quantum coherent control of free electrons by optical near-fields in an ultrafast electron microscope

International Conference on Ultrafast Phenomena
2016 | Conference paper
DOI: 10.1364/up.2016.utu5a.2
Contributors: Armin Feist; Katharina E. Echternkamp; Murat Sivis; Sergej Yalunin; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Spatio-Temporal Probing of Lattice Dynamics in Graphite by Ultrafast TEM

European Microscopy Congress 2016: Proceedings
2016 | Other
DOI: 10.1002/9783527808465.emc2016.5965
Contributors: Armin Feist; Nara Rubiano da Silva; Wenxi Liang; Claus Ropers; Sascha Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Dynamics and Structure of Monolayer Polymer Crystallites on Graphene

Nano Letters
2016-11-09 | Journal article
DOI: 10.1021/acs.nanolett.6b03079
Contributors: Max Gulde; Anastassia N. Rissanou; Vagelis Harmandaris; Marcus Müller; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Ramsey-type phase control of free-electron beams

Nature Physics
2016-08 | Journal article
DOI: 10.1038/nphys3844
Contributors: Katharina E. Echternkamp; Armin Feist; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Strong-field photoemission in nanotip near-fields: from quiver to sub-cycle electron dynamics

Applied Physics B
2016-04 | Journal article
DOI: 10.1007/s00340-016-6351-x
Part of ISSN: 0946-2171
Part of ISSN: 1432-0649
Source: Self-asserted source
Sascha Schäfer

Polarization contrast of nanoscale waveguides in high harmonic imaging

Optica
2016-03-20 | Journal article
DOI: 10.1364/optica.3.000239
Part of ISSN: 2334-2536
Source: Self-asserted source
Sascha Schäfer
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An ultrafast nanotip electron gun triggered by grating-coupled surface plasmons

Applied Physics Letters
2015 | Journal article
DOI: 10.1063/1.4937121
Contributors: Benjamin Schröder; Murat Sivis; Reiner Bormann; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

An ultrafast electron microscope gun driven by two-photon photoemission from a nanotip cathode

Journal of Applied Physics
2015-11-07 | Journal article
DOI: 10.1063/1.4934681
Part of ISSN: 0021-8979
Part of ISSN: 1089-7550
Source: Self-asserted source
Sascha Schäfer

Ultrafast Transmission Electron Microscopy with nanoscale Photoemitters

Microscopy and Microanalysis
2015-08 | Journal article
DOI: 10.1017/s1431927615006807
Contributors: Armin Feist; Katharina E. Echternkamp; Jakob Schauss; Sergey V. Yalunin; Sascha Schafer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Real-space imaging of nanotip plasmons using electron energy loss spectroscopy

Physical Review B
2015-08-10 | Journal article
DOI: 10.1103/physrevb.92.085411
Contributors: Benjamin Schröder; Thorsten Weber; Sergey V. Yalunin; Thomas Kiel; Christian Matyssek; Murat Sivis; Sascha Schäfer; Felix von Cube; Stephan Irsen; Kurt Busch et al.
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Coherent diffractive imaging beyond the projection approximation: waveguiding at extreme ultraviolet wavelengths

Optics Express
2015-07-27 | Journal article
DOI: 10.1364/oe.23.019911
Part of ISSN: 1094-4087
Source: Self-asserted source
Sascha Schäfer

Quantum coherent optical phase modulation in an ultrafast transmission electron microscope

Nature
2015-05 | Journal article
DOI: 10.1038/nature14463
Contributors: Armin Feist; Katharina E. Echternkamp; Jakob Schauss; Sergey V. Yalunin; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

In-Situ Lorentz Microscopy with Femtosecond Optical Illumination

Microscopy and Microanalysis
2014-08 | Journal article
DOI: 10.1017/s1431927614009623
Contributors: Jan Gregor Gatzmann; Tim Eggebrecht; Armin Feist; Vladyslav Zbarsky; Markus Münzenberg; Claus Ropers; Sascha Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Site-selective laser-triggered electron emission in a field emitter geometry

2014 27th International Vacuum Nanoelectronics Conference (IVNC)
2014-07 | Conference paper
DOI: 10.1109/ivnc.2014.6894734
Contributors: Reiner Bormann; Armin Feist; Stefanie Strauch; Max Gulde; Simon Schweda; Sascha Schafer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Ultrafast low-energy electron diffraction in transmission resolves polymer/graphene superstructure dynamics

Science
2014-07-11 | Journal article
DOI: 10.1126/science.1250658
Part of ISSN: 0036-8075
Part of ISSN: 1095-9203
Source: Self-asserted source
Sascha Schäfer

Development of an Ultrafast Low Energy Electron Gun for Imaging and Diffraction

Frontiers in Optics 2012/Laser Science XXVIII
2012 | Conference paper
DOI: 10.1364/fio.2012.fw6b.3
Contributors: Max Gulde; Simon Schweda; Manisankar Maiti; Sascha Schäfer; Claus Ropers
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Coherent femtosecond low-energy single-electron pulses for time-resolved diffraction and imaging: A numerical study

Journal of Applied Physics
2012-12 | Journal article
DOI: 10.1063/1.4768204
Part of ISSN: 0021-8979
Part of ISSN: 1089-7550
Source: Self-asserted source
Sascha Schäfer

Ultrafast electron crystallography of heterogeneous structures: Gold-graphene bilayer and ligand-encapsulated nanogold on graphene

Chemical Physics Letters
2012-07 | Journal article
DOI: 10.1016/j.cplett.2012.05.070
Contributors: Wenxi Liang; Sascha Schäfer; Ahmed H. Zewail
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Ultrafast electron crystallography of monolayer adsorbates on clean surfaces: Structural dynamics

Chemical Physics Letters
2012-07 | Journal article
DOI: 10.1016/j.cplett.2012.05.058
Contributors: Wenxi Liang; Sascha Schäfer; Ahmed H. Zewail
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Ultrafast Kikuchi Diffraction: Nanoscale Stress–Strain Dynamics of Wave-Guiding Structures

Nano Letters
2012-07-11 | Journal article
DOI: 10.1021/nl301644t
Part of ISSN: 1530-6984
Part of ISSN: 1530-6992
Source: Self-asserted source
Sascha Schäfer

Thermally induced polarizabilities and dipole moments of small tin clusters

The Journal of Chemical Physics
2012-04-07 | Journal article
DOI: 10.1063/1.3699071
Contributors: Stefan M. Kast; Sascha Schäfer; Rolf Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Structural dynamics of surfaces by ultrafast electron crystallography: Experimental and multiple scattering theory

The Journal of Chemical Physics
2011 | Journal article
DOI: 10.1063/1.3663963
Contributors: Sascha Schäfer; Wenxi Liang; Ahmed H. Zewail
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Structural dynamics of nanoscale gold by ultrafast electron crystallography

Chemical Physics Letters
2011-10 | Journal article
DOI: 10.1016/j.cplett.2011.09.042
Contributors: Sascha Schäfer; Wenxi Liang; Ahmed H. Zewail
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Primary structural dynamics in graphite

New Journal of Physics
2011-06 | Journal article
DOI: 10.1088/1367-2630/13/6/063030
Contributors: Sascha Schäfer; Wenxi Liang; Ahmed H Zewail
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Mass spectrometry and beam deflection studies of tin–lead nanoalloy clusters

Phys. Chem. Chem. Phys.
2010 | Journal article
DOI: 10.1039/b917206h
Part of ISSN: 1463-9076
Part of ISSN: 1463-9084
Source: Self-asserted source
Sascha Schäfer

Structural dynamics and transient electric-field effects in ultrafast electron diffraction from surfaces

Chemical Physics Letters
2010-06 | Journal article
DOI: 10.1016/j.cplett.2010.04.049
Contributors: Sascha Schäfer; Wenxi Liang; Ahmed H. Zewail
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Electronic properties for small tin clusters Snn(n≤ 20) from density functional theory and the convergence toward the solid state

Journal of Computational Chemistry
2009 | Journal article
DOI: 10.1002/jcc.21381
Part of ISSN: 0192-8651
Part of ISSN: 1096-987X
Source: Self-asserted source
Sascha Schäfer

Size- and Temperature-Dependent Magnetic Response of Molecular Cage Clusters: Manganese-Doped Tin Clusters

The Journal of Physical Chemistry A
2009-11-05 | Journal article
DOI: 10.1021/jp906140b
Part of ISSN: 1089-5639
Part of ISSN: 1520-5215
Source: Self-asserted source
Sascha Schäfer

Structure and Electric Properties of SnNClusters (N= 6−20) from Combined Electric Deflection Experiments and Quantum Theoretical Studies

The Journal of Physical Chemistry A
2008-12-04 | Journal article
DOI: 10.1021/jp8030754
Part of ISSN: 1089-5639
Part of ISSN: 1520-5215
Source: Self-asserted source
Sascha Schäfer

Relativistic and electron correlation effects in static dipole polarizabilities for the group-14 elements from carbon to elementZ=114: Theory and experiment

Physical Review A
2008-11-10 | Journal article
DOI: 10.1103/physreva.78.052506
Contributors: Christian Thierfelder; Behnam Assadollahzadeh; Peter Schwerdtfeger; Sascha Schäfer; Rolf Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

New Molecular Cage Clusters of Pb by Encapsulation of Mg

ChemPhysChem
2008-09 | Journal article
DOI: 10.1002/cphc.200800264
Contributors: Sascha Schäfer; Rolf Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search

Electric deflection studies on lead clusters

The Journal of Chemical Physics
2008-07 | Journal article
DOI: 10.1063/1.2924121
Contributors: Sascha Schäfer; Sven Heiles; Jörg A. Becker; Rolf Schäfer
Source: Self-asserted source
Sascha Schäfer via Crossref Metadata Search
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