Integrated anti-electronics for positron annihilation spectroscopy
Abstract Imaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam. However, a beam of arbitrary shape (sculpted beam) would allow the application of more versatile sing...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-89630-9 |
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| author | Francesco Guatieri |
| author_facet | Francesco Guatieri |
| author_sort | Francesco Guatieri |
| collection | DOAJ |
| description | Abstract Imaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam. However, a beam of arbitrary shape (sculpted beam) would allow the application of more versatile single-pixel imaging (SPI) techniques. I introduce the design of a microelectronic device employing a 2D array of Zener diodes as an active positron moderator, capable of sculpting positron beams with $${6}\,\upmu \hbox {m}$$ resolution. The re-emitted positrons are accelerated towards the sample through a miniaturized electrostatic lens system and reaching $${100}\,\hbox {nm}$$ resolution. The fast switch-on ( $${90}\,\hbox {ps}$$ ) and switch-off ( $${250}\,\hbox {ps}$$ ) time of the device would enable state-of-the-art positron annihilation lifetime spectroscopy (PALS) and PAS imaging with high spatial and temporal resolution. |
| format | Article |
| id | doaj-art-c0cd7f3cffc34effbc591de9a800bf39 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-c0cd7f3cffc34effbc591de9a800bf392025-08-20T02:15:00ZengNature PortfolioScientific Reports2045-23222025-02-0115111010.1038/s41598-025-89630-9Integrated anti-electronics for positron annihilation spectroscopyFrancesco Guatieri0Forschungs-Neutronenquelle Heinz Maier-Leibnitz (FRM II) Technische Universität MünchenAbstract Imaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam. However, a beam of arbitrary shape (sculpted beam) would allow the application of more versatile single-pixel imaging (SPI) techniques. I introduce the design of a microelectronic device employing a 2D array of Zener diodes as an active positron moderator, capable of sculpting positron beams with $${6}\,\upmu \hbox {m}$$ resolution. The re-emitted positrons are accelerated towards the sample through a miniaturized electrostatic lens system and reaching $${100}\,\hbox {nm}$$ resolution. The fast switch-on ( $${90}\,\hbox {ps}$$ ) and switch-off ( $${250}\,\hbox {ps}$$ ) time of the device would enable state-of-the-art positron annihilation lifetime spectroscopy (PALS) and PAS imaging with high spatial and temporal resolution.https://doi.org/10.1038/s41598-025-89630-9PositronMicroelectronicsImaging |
| spellingShingle | Francesco Guatieri Integrated anti-electronics for positron annihilation spectroscopy Scientific Reports Positron Microelectronics Imaging |
| title | Integrated anti-electronics for positron annihilation spectroscopy |
| title_full | Integrated anti-electronics for positron annihilation spectroscopy |
| title_fullStr | Integrated anti-electronics for positron annihilation spectroscopy |
| title_full_unstemmed | Integrated anti-electronics for positron annihilation spectroscopy |
| title_short | Integrated anti-electronics for positron annihilation spectroscopy |
| title_sort | integrated anti electronics for positron annihilation spectroscopy |
| topic | Positron Microelectronics Imaging |
| url | https://doi.org/10.1038/s41598-025-89630-9 |
| work_keys_str_mv | AT francescoguatieri integratedantielectronicsforpositronannihilationspectroscopy |