On Wednesday 20 September 2023, the annual NanoDay of the Laboratory of Nano and Quantum Engineering took place in Hannover. The latest research results from the interdisciplinary working groups in the field of nanotechnology were presented in eight lectures and a poster session.

This year there were 58 posters! The poster prizes sponsored by the Leibniz Universitätsgesellschaft e. V. went this year to:

• Design of a local drug delivery system for the cochlear implant
  Luisa Vanessa Steingrube, Jörn Baumgarten, Madeleine Goblet, Jennifer Harre, Thomas Lenarz, Athanasia Warnecke, Nina Ehlert, Peter Behrens
  Institut für Anorganische Chemie
• Fabrication of a surface-electrode ion trap with micro magnets and TSVs for quantum information processing
  Nora D. Stahr^1,2,3,  Jacob Stupp^1,3, Eike Iseke², Nila Krishnakumar², Friederike Giebel², Konstantin Thronberens², Chloë Allen-Ede^1,3, Jan S. Warncke^1,3, Christine Marachoris^1,3, Till Degenhardt^1,3, Amado Bautista-Salvador², Christian Ospelkaus^{1,2
  1}Gottfried Wilhelm Leibniz Universität, Hannover, Germany
  ²Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
  ³Laboratory of Nano and Quantum-Engineering, Hannover, Germany
• Circular Bragg grating with GaAs quantum dot for efficient photonic entanglement
  Chenxi Ma, Maximilian Heller, Pengji Li, Yiteng Zhang, Constantin Schmidt, Jingzhong Yang, Zhao An, Jürgen Becker, Eddy P. Rugeramigabo, Michael Zopf, Fei Ding
  Institut für Festkörperphysik

Congratulations and many thanks to all participants of NanoDay 2023!

Talks: Leibniz Universität Hannover, Appelstr. 4, 30167 Hanover, multimedia lecture hall, technical computer science (Building 3703)

Poster Session: Leibniz Universität Hannover, Schneiderberg 39, 30167 Hannover, Foyer, Laboratory of Nano and Quantum Engineering (Building 3430)

09:00 Greetings

09:15 - 10:45 Session I (in the multimedia lecture hall)

• Precision Ion Trap Fabrication for Quantum Clocks and Fundamental Tests
  Tanja Mehlstäubler
  Institute of Quantum Optics & Physikalisch-Technische Bundesanstalt

• Adjusting the vapor sorption properties of metal-organic frameworks
  Adrian Hannebauer
  Institute of Inorganic Chemistry, Inorganic Solid State and Materials Chemistry & Hannover School for Nanotechnology

• Locally Controlled MOF Growth on Multi-walled Carbon Nanotubes
  Marvin Dzinnik
  Institute for Solid State Physics, Group Haug

10:45 Conference photo

10:50 - 11:20 Coffee break

11:20 - 12:20 Session II

• Metasurface mirror effect at telecom wavelength 
  Mariia Matiushechkina  
  Institute for Gravitational Physics & Max Planck Institute for Gravitational Physics, Quantum Control (Heurs)

• Artificial Intelligence based Computer Vision for nanoscale microscopy
  Johannes Tim Seifert
  Institut für Angewandte Physik, Nanoskopische Systeme (Etzkorn), TU Braunschweig

12:20 - 13:30 Lunch break

13:30 - 15:00 Poster Session (in the LNQE research building)

15:15 – 16:45 Session III

• Interface Manipulation for enhanced contact behaviour in polymer electrolyte membrane water electrolysis cells
  Lukas Stein
  Institute of Electric Power Systems, Electrical Energy Storage Systems (Hanke-Rauschenbach)

• Introduction to microfabrication of ion traps   
  Eike Iseke 
  Institute of Quantum Optics, Trapped-Ion Quantum Engineering (Ospelkaus) 

• Ordered self-assembly of cadmium chalcogenide nanoplatelets into stacks
  Rebecca Graf
  Institute of Physical Chemistry and Electrochemistry, Functional Nanostructures (Bigall) & Hannover School for Nanotechnology

16:45 – 17:00 Award ceremony of the poster prize

Follow-up: Get-together in the LNQE-research building to conclude the NanoDay 2023