Electron Microscopy

The TG Electron Microscopy bundles the research and rich infrastructure of the cluster, related to sample characterization with electrons.

Contributions to QuantumFrontiers

  • Coordination for EM characterization capabilities at LUH, PTB and TUBS
  • Stimulated exchange of ideas between the members of the TG
  • Development of scalable methods for structure determination of nanostructures in 1, 2, and 3 dimensions: nano-LEDs, single photon emitters and plasmonic nanostructures, as well as on optical centers in diamond
  • Calibration of nanometric lengths LENA electron microscopy group has by now provided characterization and/or structuring services to more than 20 departments of TUBS, PTB and LUH
  • LNQE provides TEM in application operation following training for over ten working groups of LUH and TUBS

Collaborative Innovation

  • Machine learning assisted image analysis (Hangleiter TUBS / Etzkorn TUBS)
  • Tomographic reconstruction of scanning probe tips (Park PTB / Etzkorn TUBS )
  • Structuring superconducting Josephson junctions (Schilling TUBS / Etzkorn TUBS)
  • Coupling plasmonic antenna to quantum dots (Ding LUH, Zhe TUBS / Etzkorn TUBS)
  • Magnetic nanoparticles (Ludwig TUBS / Etzkorn TUBS)
  • Inter-institutional TEM methods, training, and know-how (Schulze-Wischeler TUBS / Etzkorn TUBS)

Scientific Output

  • Publications
    Liu Z, Wang Z, Guckel J, Akbarian Z, Seifert TJ, Park D et al. Controlling Nanoparticle Distance by On‐Surface DNA‐Origami Folding. SMALL. 2024 Apr 18. Epub 2024 Apr 18. doi: 10.1002/smll.202310955
    Liu Z, Wang Z, Guckel J, Park D, Lalkens B, Stosch R et al. Positional control of DNA origami based gold dimer hybrid nanostructures on pre-structured surfaces. NANOTECHNOLOGY. 2023 Aug 2;34(42):425301. doi: 10.1088/1361-6528/ace726
    Spende H, Margenfeld C, Waag A. AlGaN Microfins as Nonpolar UV Emitters Probed by Time-Resolved Cathodoluminescence. ACS PHOTONICS. 2022 Mai 18;9(5):1594-1604. Epub 2022 Apr 13. doi: 10.1021/acsphotonics.1c01794
    Jungclaus J, Spende H, Hille P, Schörmann J, Waag A, Eickhoff M et al. Time-resolved cathodoluminescence investigations of AlN:Ge/GaN nanowire structures. Nano Express. 2021 Jul 13;2(3):034001. doi: 10.1088/2632-959x/ac0598
    Rösch EL, Zhong J, Lak A, Liu Z, Etzkorn M, Schilling M et al. Point-of-need detection of pathogen-specific nucleic acid targets using magnetic particle spectroscopy. Biosensors and Bioelectronics. 2021 Nov 15;192:113536. Epub 2021 Jul 27. doi: 10.1016/j.bios.2021.113536
    Rosławska A, Merino P, Leon CC, Grewal A, Etzkorn M, Kuhnke K et al. Gigahertz Frame Rate Imaging of Charge-Injection Dynamics in a Molecular Light Source. Nano letters. 2021 Jun 9;21(11):4577-4583. doi: 10.1021/acs.nanolett.1c00328
    Rossow U, Sidikejiang S, Hagag S, Horenburg P, Henning P, de Vasconcellos Lourenco R et al. Pyramid Formation by Etching of InxGa1−xN /GaN Quantum Well Structures Grown on N-face GaN for Nanooptical Light Emitters. Physica Status Solidi (B) Basic Research. 2021 Okt 8;258(10):2100085. Epub 2021 Jul 20. doi: 10.1002/pssb.202100085
    Senkpiel J, Klöckner JC, Etzkorn M, Dambach S, Kubala B, Belzig W et al. Dynamical Coulomb Blockade as a Local Probe for Quantum Transport. Physical review letters. 2020 Apr 17;124(15):156803. doi: 10.1103/PhysRevLett.124.156803
    Senkpiel J, Dambach S, Etzkorn M, Drost R, Padurariu C, Kubala B et al. Single channel Josephson effect in a high transmission atomic contact. Communications Physics. 2020 Dez 1;3(1):131. doi: 10.1038/s42005-020-00397-z
    Spende H, Margenfeld C, Meyer T, Clavero IM, Bremers H, Hangleiter A et al. Plasma profiling time-of-flight mass spectrometry for fast elemental analysis of semiconductor structures with depth resolution in the nanometer range. Semiconductor Science and Technology. 2020;35(3):035006. doi: 10.1088/1361-6641/ab6ac0
    Horenburg P, Bremers H, Imlau R, Rossow U, Hangleiter A. Microscopic analysis of interface composition dynamics in m-plane alinn. Japanese Journal of Applied Physics. 2019;58(SC):SC1008. doi: 10.7567/1347-4065/ab079d
    Hötger D, Etzkorn M, Morchutt C, Wurster B, Dreiser J, Stepanow S et al. Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media. Physical Chemistry Chemical Physics. 2019;21(5):2587-2594. doi: 10.1039/c8cp07463a
    Senkpiel J, Rubio-Verdú C, Etzkorn M, Drost R, Schoop LM, Dambach S et al. Robustness of Yu-Shiba-Rusinov resonances in the presence of a complex superconducting order parameter. Physical Review B. 2019 Jul 1;100(1):014502. doi: 10.1103/physrevb.100.014502

TG Members

  • Involved Members and their Relevant Expertise
    Members Institution Relevant Expertise
    Markus Etzkorn, Leader TUBS Advancing TEM characterization
    Daesung Park PTB Advancing TEM characterization
    Fritz Schulze-Wischeler LUH Advancing TEM characterization
    Andreas Hangleiter TUBS Deterministic Quantum Dots
    Tobias Voss TUBS Molecular Quantum Emitters on GaN-based devices
    Andreas Waag TUBS Coherent Light Field Control; Nanophotonics for Atom and Ion Manipulation; Hybrid integration of GaN LEDs with conductive substrates
    Meinhard Schilling TUBS Electronic Quantum Metrology; Optical Voltage Standard - Fast Prototyping and HTS Superconductors
    Frank Ludwig TUBS Characterization of and investigation of dynamic magnetic properties of magnetic nanoparticles; Magnetic Particle Imaging (MPI)
    Harald Bosse PTB Nanometrology
    Marc Christopher Wurz LUH Development of compact vacuum pumps, pressure measurement devices and miniaturized Rb sources; Atom-Chip Based Gravimeters and Inertial Sensors
    Alexander Kassner LUH Atom-Chip Based Gravimeters and Inertial Sensors
    Rolf Haug LUH Two-dimensional materials, Electrical Quantum Effects, Magnetic Quantum Effects
    Liu Zhe TUBS Electron Microscopy investigations of plasmonic structures
    Christoph Künzler LUH Micro-Mechanic structures
    Julian Petring LUH Scanning electron microscopy
    Jana Hartmann TUBS Structuring of semiconductors
    Stefan Wolter TUBS cathodoluminescence