Ursula Ludacka
About
As a dedicated TEM enthusiast with a profound fascination for the nanoworld, I am driven by the quest to unveil the mysteries concealed within the realms of the very small. My professional journey has brought me to NTNU in Trondheim, Norway, where I embark on the exploration of the nanoscale universe.
I excel in the complexities of technical details and am particularly passionate about working with multidimensional 4D STEM datasets. My expertise extends not only to TEM but also encompasses open-source data processing, where I employ cutting-edge tools to extract valuable insights from these intricate datasets.
My background is rich with diverse experiences, including positions at EMAT in Antwerp and postdoctoral research alongside Dennis Meier. These experiences have provided me with a broad spectrum of techniques and perspectives, enhancing my versatility in both TEM and materials science.
Trondheim has not only captivated me with its breathtaking natural surroundings but has also offered a unique blend of exhilarating sports, scientific exploration, and the seamless integration of open-source data processing—a place where nature, innovation, and knowledge converge.
Publications
2026
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Ushakov, Ivan;
Topstad, Mats;
Khalid, Muhammad Zeeshan;
Sharma, Niyorjyoti;
Grams, Christoph P.;
Ludacka, Ursula;
He, Jiali;
Hunnestad, Kasper Aas;
Sadeqi-Moqadam, Mohsen;
Glaum, Julia.
(2026)
Hybrid antiferroelectric–ferroelectric domain walls in noncollinear antipolar oxides.
Nature Nanotechnology
Academic article
2025
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He, Jiali;
Ludacka, Ursula;
Hunnestad, Kasper Aas;
Småbråten, Didrik Rene;
Shapovalov, Konstantin;
Vullum, Per Erik;
Hatzoglou, Constantinos Athanasios;
Evans, Donald Malcolm;
Roede, Erik Dobloug;
Yan, Zewu.
(2025)
Local p‐ and n‐Type Doping of an Oxide Semiconductor via Electric‐Field‐Driven Defect Migration.
Advanced Science
Academic article
-
He, Longfei;
Ludacka, Ursula;
Chatterjee, Payel;
Hartl, Matthias;
Meier, Dennis;
Brüne, Christoph.
(2025)
Tailoring MBE growth of c-Mn<inf>3</inf>Sn directly on MgO (111) from islands to film.
npj Quantum Materials
Academic article
-
Richarz, Leonie;
Skogvoll, Ida Cathrine;
Tokle, Egil Ytterli;
Hunnestad, Kasper Aas;
Ludacka, Ursula;
He, Jiali;
Bourret, Edith;
Yan, Zewu;
Helvoort, Antonius Van;
Schultheiß, Jan.
(2025)
Ferroelectric Domain Walls for Environmental Sensors.
ACS Applied Materials & Interfaces
Academic article
2024
-
He, Jiali;
Zahn, Manuel Peter;
Ushakov, Ivan;
Richarz, Leonie;
Ludacka, Ursula;
Roede, Erik Dobloug;
Yan, Zewu;
Bourret, Edith;
Kézsmárki, István;
Catalan, Gustau.
(2024)
Non-Destructive Tomographic Nanoscale Imaging of Ferroelectric Domain Walls.
Advanced Functional Materials
Academic article
-
Ludacka, Ursula;
He, Jiali;
Qin, Shuyu;
Zahn, Manuel Peter;
Christiansen, Emil;
Hunnestad, Kasper Aas;
Zhang, Xinqiao;
Yan, Zewu;
Bourret, Edith;
Kézsmárki, István.
(2024)
Imaging and structure analysis of ferroelectric domains, domain walls, and vortices by scanning electron diffraction.
npj Computational Materials
Academic article
2023
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Richarz, Leonie;
He, Jiali;
Ludacka, Ursula;
Bourret, E.;
Yan, Z.;
Helvoort, Antonius Van;
Meier, Dennis.
(2023)
Moiré fringes in conductive atomic force microscopy.
Applied Physics Letters
Academic article
2021
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Helvoort, Antonius T. J. van;
Mosberg, Aleksander Buseth;
Ludacka, Ursula;
Holstad, Theodor Secanell;
Evans, Donald;
Meier, Dennis Gerhard.
(2021)
STEM-based analysis of functional defects in ferroelectric ErMnO3.
Microscopy and Microanalysis
Academic article
Journal publications
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Ushakov, Ivan;
Topstad, Mats;
Khalid, Muhammad Zeeshan;
Sharma, Niyorjyoti;
Grams, Christoph P.;
Ludacka, Ursula;
He, Jiali;
Hunnestad, Kasper Aas;
Sadeqi-Moqadam, Mohsen;
Glaum, Julia.
(2026)
Hybrid antiferroelectric–ferroelectric domain walls in noncollinear antipolar oxides.
Nature Nanotechnology
Academic article
-
He, Jiali;
Ludacka, Ursula;
Hunnestad, Kasper Aas;
Småbråten, Didrik Rene;
Shapovalov, Konstantin;
Vullum, Per Erik;
Hatzoglou, Constantinos Athanasios;
Evans, Donald Malcolm;
Roede, Erik Dobloug;
Yan, Zewu.
(2025)
Local p‐ and n‐Type Doping of an Oxide Semiconductor via Electric‐Field‐Driven Defect Migration.
Advanced Science
Academic article
-
Helvoort, Antonius T. J. van;
Mosberg, Aleksander Buseth;
Ludacka, Ursula;
Holstad, Theodor Secanell;
Evans, Donald;
Meier, Dennis Gerhard.
(2021)
STEM-based analysis of functional defects in ferroelectric ErMnO3.
Microscopy and Microanalysis
Academic article
-
He, Jiali;
Zahn, Manuel Peter;
Ushakov, Ivan;
Richarz, Leonie;
Ludacka, Ursula;
Roede, Erik Dobloug;
Yan, Zewu;
Bourret, Edith;
Kézsmárki, István;
Catalan, Gustau.
(2024)
Non-Destructive Tomographic Nanoscale Imaging of Ferroelectric Domain Walls.
Advanced Functional Materials
Academic article
-
Richarz, Leonie;
He, Jiali;
Ludacka, Ursula;
Bourret, E.;
Yan, Z.;
Helvoort, Antonius Van;
Meier, Dennis.
(2023)
Moiré fringes in conductive atomic force microscopy.
Applied Physics Letters
Academic article
-
He, Longfei;
Ludacka, Ursula;
Chatterjee, Payel;
Hartl, Matthias;
Meier, Dennis;
Brüne, Christoph.
(2025)
Tailoring MBE growth of c-Mn<inf>3</inf>Sn directly on MgO (111) from islands to film.
npj Quantum Materials
Academic article
-
Ludacka, Ursula;
He, Jiali;
Qin, Shuyu;
Zahn, Manuel Peter;
Christiansen, Emil;
Hunnestad, Kasper Aas;
Zhang, Xinqiao;
Yan, Zewu;
Bourret, Edith;
Kézsmárki, István.
(2024)
Imaging and structure analysis of ferroelectric domains, domain walls, and vortices by scanning electron diffraction.
npj Computational Materials
Academic article
-
Richarz, Leonie;
Skogvoll, Ida Cathrine;
Tokle, Egil Ytterli;
Hunnestad, Kasper Aas;
Ludacka, Ursula;
He, Jiali;
Bourret, Edith;
Yan, Zewu;
Helvoort, Antonius Van;
Schultheiß, Jan.
(2025)
Ferroelectric Domain Walls for Environmental Sensors.
ACS Applied Materials & Interfaces
Academic article
Outreach
2026
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Other presentationYokoyama, Yoshihiro; Olsen, Sveinung viggo; Eilertsen, Yngve; Spicher, Andres; Tinguely, Jean-Claude; Ludacka, Ursula; Hedin, Jonas; Kimura, Yuki; Tanaka, Kyoko K; Pineau, Adrian. (2026) Initial results of the analysis of dust collected in the mesosphere by the MESS instrument during the Maxidusty-2 campaign. 27th ESA Symposium on European Rocket and Balloon
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Other presentationYokoyama, Yoshihiro; Olsen, Sveinung viggo; Eilertsen, Yngve; Spicher, Andres; Tinguely, Jean-Claude; Ludacka, Ursula; Hedin, Jonas; Kimura, Yuki; Tanaka, Kyoko K; Pineau, Adrian. (2026) Mesospheric dust studies with sample analysis and in-situ measurement from Maxidusty-2. EGU General Assembly 2026
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Other presentationYokoyama, Yoshihiro; Olsen, Sveinung viggo; Eilertsen, Yngve; Spicher, Andres; Tinguely, Jean-Claude; Ludacka, Ursula; Hedin, Jonas; Kimura, Yuki; Tanaka, Kyoko K; Pineau, Adrian. (2026) Estimation of mesospheric dust size distribution and direct investigation of dust composition with collected samples from the MXD-2 rocket campaign. Japan Geoscience Union Meeting 2026
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Other presentationNord, Magnus; Ludacka, Ursula; Christiansen, Emil; Bungum, Berit. (2026) Skolebesøk fra Charlottenlund videregående skole. Skolebesøk Charlottenlund VGS
2025
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Conference posterHe, Longfei; Ludacka, Ursula; Chatterjee, Payel; Hartl, Matthias; Meier, Dennis; Brüne, Christoph. (2025) Tailoring MBE Growth of c-Mn3Sn Directly on MgO (111): From Islands to Film. 14th Joint European Magnetic Symposia - JEMS 2025
2024
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Conference posterKonow, Inga Dahlen; Wenner, Sigurd; Michels Brito Miranda, Leander Edward; Odden, Jan Ove; Ludacka, Ursula; Holmestad, Randi. (2024) Electron Microscopy of a Gas-Atomized NiSiV Powder. EMC 2024
2023
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Conference posterLudacka, Ursula; Konow, Inga; Jørgensen, Sindre Vie; Wenner, Sigurd; Bjørge, Ruben; Michels, Leander; Li, Yanjun; Holmestad, Randi. (2023) From steel to silicon; A journey through TEM characterization of industrially relevant materials. Norwegian Nano-symposium