Conference Contributions and Seminar Talks

2025

Niggas, A. (2025, August 21). Angle-resolved ion-induced electron emission spectroscopy from surfaces. Joint Annual Meeting of ÖPG and SPS 2025, Wien, Austria.
| Angle-resolved ion-induced electron emission spectroscopy from surfaces at reposiTUm , opens an external URL in a new window
Vukovic, F., Niggas, A., Schnack Jürgen, Marks Nigel A., & Wilhelm, R. A. (2025, July 8). Atomistic view of porosity in carbon nanomembranes from molecular dynamics and highly-charged ion spectroscopy. FisMat 2025 Konferenz, Venedig, Italy.
| Atomistic view of porosity in carbon nanomembranes from molecular dynamics and highly-charged ion spectroscopy at reposiTUm , opens an external URL in a new window

2024

Grossek, A. S., Niggas, A., Wilhelm, R. A., Aumayr, F., & Lemell, C. (2024, September 5). Nanopore formation in 2D materials by impact of slow HC. 21st Highly Charged Ion Conference (HCI-21), Egmond aan Zee, Netherlands (the).
| Nanopore formation in 2D materials by impact of slow HC at reposiTUm , opens an external URL in a new window
Redl, A., Chirita-Mihaila, M. C., Goldberger, M., Szabo, G., Pachlinger, C., Niggas, A., & Wilhelm, R. A. (2024, July 16). Using ultrafast electron-stimulated desorption to generate picosecond ion pulses. 23rd International Conference on Ultrafast Phenomena, Barcelona, Spain.
| Using ultrafast electron-stimulated desorption to generate picosecond ion pulses at reposiTUm , opens an external URL in a new window
Niggas, A. (2024, February 1). Using charge exchange dynamics of highly charged ions to investigate material structures. Seminar Condensed Matter Physics 2024, Bielefeld, Germany.
| Using charge exchange dynamics of highly charged ions to investigate material structures at reposiTUm , opens an external URL in a new window
Niggas, A. (2024, January 31). Nanoscale Shaping of Surfaces Using Slow Highly Charged Ions. AP-Seminare 2023, Darmstadt-Wixhausen, Germany.
| Nanoscale Shaping of Surfaces Using Slow Highly Charged Ions at reposiTUm , opens an external URL in a new window

2023

Niggas, A., Werl, M., Thima, D., Bernhart, M., Aumayr, F., & Wilhelm, R. A. (2023, October 9). Charge exchange dynamics of slow highly charged ions. 26th International Conference on Ion Beam Analysis (IBA-2023) 18th International Conference on Particle Induced X-ray Emission (PIXE 2023), Toyama, Japan.
| Charge exchange dynamics of slow highly charged ions at reposiTUm , opens an external URL in a new window
Niggas, A., Balzer, K., Aumayr, F., Bonitz, K., & Wilhelm, R. A. (2023, September 14). Charge carrier dynamics in 2D materials upon impact of highly charged ions probed by emitted electrons. 24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24), Charleston, South Carolina, United States of America (the).
| Charge carrier dynamics in 2D materials upon impact of highly charged ions probed by emitted electrons at reposiTUm , opens an external URL in a new window
Werl, M., Koller, R., Haidegger, P., Niggas, A., Tőkési, K., Aumayr, F., & Wilhelm, R. A. (2023, September 13). The hollow atom formation and de-excitation simulation package. 24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24), Charleston, South Carolina, United States of America (the).
| The hollow atom formation and de-excitation simulation package at reposiTUm , opens an external URL in a new window
Wilhelm, R. A., Niggas, A., Werl, M., Thima, D., Bennett, R., Grande, P. L., & Aumayr, F. (2023, September 13). Charge exchange of slow heavy ions inside a solid. 24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24), Charleston, South Carolina, United States of America (the).
| Charge exchange of slow heavy ions inside a solid at reposiTUm , opens an external URL in a new window
Wilhelm, R. A., Szabo, G., Jany, B. R., Niggas, A., Szabo, P., Turchanin, A., & Krok, F. (2023, September 13). Charge-state enhanced erosion of metallic gold nanoislands. 24th International Workshop on Inelastic Ion-Surface Collisions ((IISC-24), Charleston, South Carolina, United States of America (the).
| Charge-state enhanced erosion of metallic gold nanoislands at reposiTUm , opens an external URL in a new window
Niggas, A. (2023, August 1). Electron emission from 2D materials induced by highly charged ions. 33rd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Ottawa, Canada.
| Electron emission from 2D materials induced by highly charged ions at reposiTUm , opens an external URL in a new window
Werl, M., Niggas, A., Koller, T., Haidegger, P., Tökési, K., Aumayr, F., & Wilhelm, R. A. (2023, July 28). A numerical approach to the deexcitation of a hollow atom. 33rd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Ottawa, Canada.
| A numerical approach to the deexcitation of a hollow atom at reposiTUm , opens an external URL in a new window
Wilhelm, R. A., Niggas, A., & Aumayr, F. (2023, July 28). Can the ion charge state be observed while travelling within a solid?. 33rd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Ottawa, Canada.
| Can the ion charge state be observed while travelling within a solid? at reposiTUm , opens an external URL in a new window
Niggas, A., Werl, M., Thima Daniel, Aumayr, F., & Wilhelm, R. A. (2023, July 24). Electron energy distribution emitted from freestanding single-layer graphene upon impact of highly charged ions. 2nd Symposium on Electron, Photon, and Ion Collisions on Molecular & Atomic Nanostructures (EPIC-MAN 2), Ottawa, Canada.
| Electron energy distribution emitted from freestanding single-layer graphene upon impact of highly charged ions at reposiTUm , opens an external URL in a new window
Niggas, A. (2023, March 28). Highly charged ion-induced electron emission from atomically thin materials (contributed talk). Frühjahrstagung der Deutschen Physikalischen Gesellschaft (DPG) - Sektion Kondensierte Materie (SKM) 2023, Dresden, Germany.
| Highly charged ion-induced electron emission from atomically thin materials (contributed talk) at reposiTUm , opens an external URL in a new window

2022

Niggas, A. (2022, August 29). Charge exchange dynamics of highly charged ions with atomically thin materials. 20th International Conference on the Physics of Highly Charged Ions (HCI 2022), Matsue, Japan.
| Charge exchange dynamics of highly charged ions with atomically thin materials at reposiTUm , opens an external URL in a new window
Niggas, A. (2022, July 18). Surface modification using slow highly charged ions. HITRAP Facility and Experiments - Status and Future Perspectives, Eisenach, Germany.
| Surface modification using slow highly charged ions at reposiTUm , opens an external URL in a new window
Niggas, A. (2022). Coincidence technique to study ion-induced electron emission from atomically thin materials; invited talk. SPIE Photonics Europe 2022 Nanophotonics, Strasbourg, France.
| Coincidence technique to study ion-induced electron emission from atomically thin materials; invited talk at reposiTUm , opens an external URL in a new window
Niggas, A. (2022). Electron emission from freestanding 2D materials during slow highly charged ion irradiation; invited talk. 29th International Conference on Atomic Collisions in Solids & 11th International Symposium on Swift Heavy Ions in Matter (ICACS-SHIM 2022), University of Helsinki, Finland.
| Electron emission from freestanding 2D materials during slow highly charged ion irradiation; invited talk at reposiTUm , opens an external URL in a new window
Niggas, A., Balzer, K., Speckmann, C., Kotakoski, J., Bonitz, M., Aumayr, F., & Wilhelm, R. (2022). Electron emission from 2D materials induced by highly charged ions. 5th European Workshop on Epitaxial Graphene and 2D Materials (EWEG2D´22), St. Moritz, Switzerland.
| Electron emission from 2D materials induced by highly charged ions at reposiTUm , opens an external URL in a new window
Niggas, A., Werl, M., Aumayr, F., & Wilhelm, R. (2022). Correlated ion-electron energy and charge exchange spectroscopy following ion transmission through free-standing 2D materials. International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (MPS-2022), Turku, Finland.
| Correlated ion-electron energy and charge exchange spectroscopy following ion transmission through free-standing 2D materials at reposiTUm , opens an external URL in a new window
Werl, M., Niggas, A., Tökési, K., Aumayr, F., & Wilhelm, R. (2022). A computational approach to the formation and free decay of hollow atoms. 29th International Conference on Atomic Collisions in Solids & 11th International Symposium on Swift Heavy Ions in Matter (ICACS-SHIM 2022), University of Helsinki, Finland.
| A computational approach to the formation and free decay of hollow atoms at reposiTUm , opens an external URL in a new window

2021

Muckenhuber, H., Szabo, G. L., Arkadiusz, J., Jany, B. R., Lehner, M., Niggas, A., Kentsch, U., Krok, F., & Wilhelm, R. (2021). Irradiation of Au-nano-islands with highly charged ions and characterization with AFM and SEM. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada.
| Irradiation of Au-nano-islands with highly charged ions and characterization with AFM and SEM at reposiTUm , opens an external URL in a new window
Niggas, A. (2021). Atomic-scale carving of nanopores into a van-der-Waals heterostructure using slow highly charged ions. European congress and exhibition on advanced materials and processes (EUROMAT 2021), Graz/Stmk, Austria.
| Atomic-scale carving of nanopores into a van-der-Waals heterostructure using slow highly charged ions at reposiTUm , opens an external URL in a new window
Niggas, A. (2021). Charge exchange dynamics of ions inside solids. Seminar Institut für Allgemeine Physik (IAP), TU Wien, Austria.
| Charge exchange dynamics of ions inside solids at reposiTUm , opens an external URL in a new window
Niggas, A. (2021). Peeling graphite layer by layer to study the charge exchange of ions inside a solid. DPG-Frühjahrstagung (DPG Spring Meeting) of the Surface Science Division, SurfaceScience21, virtual, Unknown.
| Peeling graphite layer by layer to study the charge exchange of ions inside a solid at reposiTUm , opens an external URL in a new window
Niggas, A. (2021). The role of ICD in the de-excitation of slow highly charged ions transmitted through freestanding 2D materials. Interatomic Coulombic Decay in External Environments (ICD-X), Glasgow/United Kingdom, United Kingdom of Great Britain and Northern Ireland (the).
| The role of ICD in the de-excitation of slow highly charged ions transmitted through freestanding 2D materials at reposiTUm , opens an external URL in a new window
Niggas, A., Creutzburg, S., Schwestka, J., Wöckinger, B., Gupta, D., Grande, P. L., Eder, D., Marques, J. P., Bayer, B. C., Aumayr, F., Bennett, R., & Wilhelm, R. (2021). Interatomic Coulombic decay driving the de-excitation of highly charged ions inside of atomically thin materials. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada.
| Interatomic Coulombic decay driving the de-excitation of highly charged ions inside of atomically thin materials at reposiTUm , opens an external URL in a new window
Szabo, G. L., Fries, J., Niggas, A., & Wilhelm, R. (2021). Generation of picosecond ion pulses using a fast pulse electron beam ion source. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada.
| Generation of picosecond ion pulses using a fast pulse electron beam ion source at reposiTUm , opens an external URL in a new window
Werl, M., Niggas, A., Aumayr, F., & Wilhelm, R. (2021). Measuring charge exchange and energy loss of highly charged ions colliding with surfaces under grazing incidence. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada.
| Measuring charge exchange and energy loss of highly charged ions colliding with surfaces under grazing incidence at reposiTUm , opens an external URL in a new window

2020

Niggas, A. (2020). Preparing freestanding 2D materials for ion beam spectroscopy. 1st Symposium on Ion-Solid and Atomic Collisions (ISAAC 2020), TU Wien, Austria.
| Preparing freestanding 2D materials for ion beam spectroscopy at reposiTUm , opens an external URL in a new window

2019

Niggas, A., Schwestka, J., Creutzburg, S., Aumayr, F., & Wilhelm, R. (2019). The role of contaminations on the interaction of highly charged ions with 2D materials. 31st International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC), Deauville, Normandy, France.
| The role of contaminations on the interaction of highly charged ions with 2D materials at reposiTUm , opens an external URL in a new window
Niggas, A., Schwestka, J., Creutzburg, S., Wilhelm, R., & Aumayr, F. (2019). Electron emission due to ion thransmission through freestanding single layer graphene. 1st Symposium on Electron, Photon and Ion Collisions on Molecular & Atomic Nanostructures (1. EPIC-MAN), Caen, France.
| Electron emission due to ion thransmission through freestanding single layer graphene at reposiTUm , opens an external URL in a new window
Schwestka, J., Niggas, A., Creutzburg, S., Wilhelm, R., & Aumayr, F. (2019). Highly charged ion impact on graphene leading to the emission of low energy electrons. 31st International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC), Deauville, Normandy, France.
| Highly charged ion impact on graphene leading to the emission of low energy electrons at reposiTUm , opens an external URL in a new window
Schwestka, J., Niggas, A., Wilhelm, R., & Aumayr, F. (2019). Ion-induced electron emission from 2D materials. 10th Workshop “Towards Reality in Nanoscale Materials” (TRNM X), Levi, Finland.
| Ion-induced electron emission from 2D materials at reposiTUm , opens an external URL in a new window
Wilhelm, R., Creutzburg, S., Schwestka, J., Inani, H., Tripathi, M. K., Heller, R., Klingner, N., Niggas, A., Lehnert, T., Leiter, R., Kozubek, R., Facsko, S., Kaiser, U., Kotakoski, J., Schleberger, M., & Aumayr, F. (2019). Energy deposition of heavy ions in freestanding 2D materials. 13th European Conference on Atoms, Molecules and Photons (ECAMP-13), Florence, Italy.
| Energy deposition of heavy ions in freestanding 2D materials at reposiTUm , opens an external URL in a new window
Wilhelm, R., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Charge exchange of heavy ions transmitted through a single layer of molybdenum disulfide. 1st Symposium on Electron, Photon and Ion Collisions on Molecular & Atomic Nanostructures (1. EPIC-MAN), Caen, France.
| Charge exchange of heavy ions transmitted through a single layer of molybdenum disulfide at reposiTUm , opens an external URL in a new window
Wilhelm, R., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Energy deposition of highly charged ions transmitted through single layer MoS₂. 31st International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC), Deauville, Normandy, France.
| Energy deposition of highly charged ions transmitted through single layer MoS₂ at reposiTUm , opens an external URL in a new window
Wilhelm, R., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Unraveling energy-loss processes of low energy heavy ions in 2D materials. 1st Symposium on Electron, Photon and Ion Collisions on Molecular & Atomic Nanostructures (1. EPIC-MAN), Caen, France.
| Unraveling energy-loss processes of low energy heavy ions in 2D materials at reposiTUm , opens an external URL in a new window
Wilhelm, R., P.L., G., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Unraveling energy loss processes of ions in 2D materials - the role of Interatomic Coulombic Decay, the charge state, and charge exchange in nuclear and electronic stopping. 13th European Conference on Atoms, Molecules and Photons (ECAMP-13), Florence, Italy.
| Unraveling energy loss processes of ions in 2D materials - the role of Interatomic Coulombic Decay, the charge state, and charge exchange in nuclear and electronic stopping at reposiTUm , opens an external URL in a new window

Anna Niggas

E-Mail: anna@iap.tuwien.ac.at

Phone: +43 1 58801 13433

Anna Niggas

E-Mail: anna@iap.tuwien.ac.at

Phone: +43 1 58801 13433

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