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QuantumFrontiers
 
QuantumFrontiers Forschung Topics

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 of EM characterization capabilities at LUH, PTB and TUBS
  • Stimulating exchange between the members of the TG
  • Supporting various activities with structuring and characterization possibilities as well as know-how
  • The LENA EM-group as by now provided characterization and/or structuring services to more than 20 departments in TUBS, LUH and PTB for topics including: nano-LED´s, single photon sources and controlling light-matter interaction
  • The LNQE provided TEM training and measurement time for more than 10 working groups at LUH and TUBS
  • Supporting public outreach activities with life shows on electron microscopy

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 LUH / Etzkorn TUBS)

Scientific Output

  • Publications
    de Vasconcellos Lourenço R, Horenburg P, Henning P, Bremers H, Rossow U, Hangleiter A. Strong evidence for diffusion of point defects in GaInN/GaN quantum well structures. AIP Advances. 2024 Apr;14(4):045122. doi: 10.1063/5.0187072
    Dzinnik MJ, Akmaz NE, Hannebauer A, Schaate A, Behrens P, Haug RJ. Locally controlled MOF growth on functionalized carbon nanotubes. Communications Materials. 2024 Mär 16;5:38. doi: 10.1038/s43246-024-00473-9
    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 Sep 5;20(36):2310955. doi: 10.1002/smll.202310955
    Yin Y, Kruskopf M, Bauer S, Tschirner T, Pierz K, Hohls F et al. Quantum Hall resistance standards based on epitaxial graphene with p-type conductivity. Applied physics letters. 2024 Aug 5;125(6):064001. doi: 10.1063/5.0223723
    Guckel J, Görke M, Garnweitner G, Park D. Smart Iterative Analysis Tool for the Size Distribution of Spherical Nanoparticles. Microscopy and microanalysis. 2023 Jun;29(3):1062-1070. ozad036. doi: 10.1093/micmic/ozad036
    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
    Peters L, Sergeev D, Margenfeld C, Müller M, Waag A. Sublimation behavior of AlN in nitrogen and argon at conditions used for high-temperature annealing. Journal of applied physics. 2023 Jun 21;133(23):235704. doi: 10.1063/5.0152054
    Ritter PJ, Stapelfeldt FN, Tollkühn M, Hanisch D, Pröpper M, Schilling M et al. Antenna Designs for Efficient Coupling to Josephson Junctions for THz Microscopy. IEEE Transactions on Applied Superconductivity. 2023 Aug;33(5):1800705. Epub 2023 Feb 28. doi: 10.1109/tasc.2023.3249132
    Sidikejiang S, Henning P, Rossow U, Bremers H, Scholz F, Hangleiter A. Polarization anisotropy and valence band ordering in semipolar (112¯2) AlInN/GaN heterostructures. Physical Review B. 2023 Jan 5;107(4):045202. doi: 10.1103/physrevb.107.045202
    Bornemann S, Meyer T, Voss T, Waag A. Ablation threshold of GaN films for ultrashort laser pulses and the role of threading dislocations as damage precursors. Optics express. 2022 Dez 15;30(26):47744-47760. doi: 10.1364/OE.471111
    Diekmann LF, Kassner A, Dencker F, Wurz MC. Nonevaporable getter-MEMS for generating UHV conditions in small volumina. Journal of Vacuum Science and Technology B. 2022 Sep;40(5):054202. Epub 2022 Aug 18. doi: 10.1116/6.0001991
    Hong SJ, Wang D, Wulferding D, Lemmens P, Haug RJ. Twisted double ABC-stacked trilayer graphene with weak interlayer coupling. Physical Review B. 2022 Mai 2;105(20):205404. doi: 10.1103/PhysRevB.105.205404
    Manglano Clavero I, Margenfeld C, Quatuor J, Spende H, Peters L, Schwarz UT et al. Gradients in Three-Dimensional Core–Shell GaN/InGaN Structures: Optimization and Physical Limitations. ACS Applied Materials Interfaces. 2022 Feb 23;14(7):9272–9280. Epub 2022 Feb 9. doi: 10.1021/acsami.1c19490
    Sidikejiang S, Henning P, Horenburg P, Bremers H, Rossow U, Menzel D et al. Low-temperature internal quantum efficiency of GaInN/GaN quantum wells under steady-state conditions. Semiconductor Science and Technology. 2022 Jan 31;37(3):035017. 035017. doi: 10.1088/1361-6641/ac4b89
    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
    Henning P, Sidikejiang S, Horenburg P, Bremers H, Rossow U, Hangleiter A. Unity quantum efficiency in III-nitride quantum wells at low temperature: Experimental verification by time-resolved photoluminescence. Applied physics letters. 2021 Jul 8;119(1):011106. doi: 10.1063/5.0055368
    Hong SJ, Xiao X, Wulferding D, Belke C, Lemmens P, Haug RJ. Strain-induced doping and zero line mode at the fold of twisted Bernal-stacked bilayer graphene. 2D Materials. 2021 Okt 18;8(4):045009. doi: 10.1088/2053-1583/ac152e
    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
    Wolter S, Spende H, Gülink J, Hartmann J, Wehmann HH, Waag A et al. Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale. Nanomaterials. 2021;11(4):836. doi: 10.3390/nano11040836
    Krieg L, Meierhofer F, Gorny S, Leis S, Splith D, Zhang Z et al. Toward three-dimensional hybrid inorganic/organic optoelectronics based on GaN/oCVD-PEDOT structures. Nature Communications. 2020 Dez 1;11(1):5092. doi: 10.1038/s41467-020-18914-7
    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

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
    Tobias Klein PTB Electron Microscopy
    Heiko Bremers TUBS Electron Microscopy
    Justus Christinck PTB Nanostructuring, Single Photon Sources

Letzte Änderung: 17.09.24; Dr. A. Wanner Druckversion

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