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| Verfasst von: | Hahn, Vincent [VerfasserIn]  |
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| | Messer, Tobias [VerfasserIn] |
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| | Bojanowski, N. Maximilian [VerfasserIn] |
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| | Curticean, Ernest Ronald [VerfasserIn] |
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| | Wacker, Irene [VerfasserIn] |
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| | Schröder, Rasmus R. [VerfasserIn] |
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| | Blasco, Eva [VerfasserIn] |
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| | Wegener, Martin [VerfasserIn] |
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| Titel: | Two-step absorption instead of two-photon absorption in 3D nanoprinting |
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| Verf.angabe: | Vincent Hahn, Tobias Messer, N. Maximilian Bojanowski, Ernest Ronald Curticean, Irene Wacker, Rasmus R. Schröder, Eva Blasco and Martin Wegener |
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| E-Jahr: | 2021 |
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| Jahr: | 29 November 2021 |
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| Umfang: | 7 S. |
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| Fussnoten: | Gesehen am 01.12.2021 |
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| Titel Quelle: | Enthalten in: Nature photonics |
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| Ort Quelle: | London [u.a.] : Nature Publ. Group, 2006 |
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| Jahr Quelle: | 2021 |
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| Band/Heft Quelle: | 15(2021), 12, Seite 932-938 |
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| ISSN Quelle: | 1749-4893 |
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| Abstract: | The quadratic optical nonlinearity arising from two-photon absorption provides the crucial spatial concentration of optical excitation in three-dimensional (3D) laser nanoprinting, with widespread applications in technical and life sciences. Femtosecond lasers allow for obtaining efficient two-photon absorption but are accompanied by a number of issues, including higher-order processes, cost, reliability and size. Here we introduce two-step absorption replacing two-photon absorption as the primary optical excitation process. Under suitable conditions, two-step absorption shows the same quadratic optical nonlinearity as two-photon absorption. We present a photoresist system based on a photoinitiator supporting two-step absorption, a scavenger and a well-established triacrylate. We show that this system allows for printing state-of-the-art 3D nanostructures and beyond. In these experiments, we use ~100 μW optical power from an inexpensive, compact continuous-wave semiconductor laser diode emitting at 405 nm wavelength. Our work opens the door to drastic miniaturization and cost reduction of 3D laser nanoprinters. |
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| DOI: | doi:10.1038/s41566-021-00906-8 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1038/s41566-021-00906-8 |
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| | Volltext: https://www.nature.com/articles/s41566-021-00906-8 |
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| | DOI: https://doi.org/10.1038/s41566-021-00906-8 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | Laser material processing |
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| | Metamaterials |
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| | Photochemistry |
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| | Photonic devices |
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| K10plus-PPN: | 1779973446 |
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| Verknüpfungen: | → Zeitschrift |
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Two-step absorption instead of two-photon absorption in 3D nanoprinting / Hahn, Vincent [VerfasserIn]; 29 November 2021 (Online-Ressource)
