Do pełnej funkcjonalności strony potrzebujesz włączonej obsługi skryptów. Tu znajdziesz instrukcje, które pozwolą Ci włączyć skrypty w Twojej przeglądarce.
KK-Nano 2022 - abstrakt Francesco Buatier de Mongeot

Wystąpienie ustne Francesco Buatier de Mongeot (NEF-Sr)

Ściągnij plik z abstraktem


Francesco Buatier de Mongeot

Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy

Large-area nanoscale patterning of optical interfaces represents a key issue for developing real-world nanophotonic devices with tunable response from the visible to the IR range. Our recent results demonstrate that ion beam induced wrinkling [1] is a viable tool for obtaining self-organised restructuring on a broad portfolio of optical interfaces which range from dielectrics to flexible polymers [2]. The process is scalable to the industrial level and enables the fabrication of hybrid plasmonic/dielectric arrays in a single maskless step, enabling nanophotonic applications ranging from high sensitivity IR sensing [3] to colour-routing in the visible range [4].

In a second nanopatterning approach we employ laser intereference lithography combined with physical deposition, to reshape ultrathin 2-dimensional TMD semiconductor films (MoS2) forming large-area nanostripe and nanoripple arrays [5]. Light collection in such ultrathin regime represents a critical issue which we address recurring to flat-optic approaches for steering light flow parallel to the active MoS2 layers: light absorption is boosted exploiting photonic and guided mode anomalies supported by the periodically nanotextured 2D-TMD film [6,7].

These results are promising for optimizing a broad range of light harvesting applications like e.g. in seminal water remediation experiments. The light harvesting performance of both plasmonic and 2D platforms is assessed by monitoring the photobleaching of highly polluting methylene blue molecules [8].

1. “Anisotropic Nanoscale Wrinkling in Solid-State Substrates” Maria Caterina Giordano and Francesco Buatier de Mongeot, Adv. Mater. 30, 1801840 (2018)

2. “Infrared Plasmonics via Self-Organized Anisotropic Wrinkling of Au/PDMS Nanoarrays” Matteo Barelli, Diego Repetto, and Francesco Buatier de Mongeot, ACS Appl. Polym. Mater.1, 1334–1340 (2019)

3. “Self-Organized Nanorod Arrays for Large-Area Surface-Enhanced Infrared Absorption”, M. C. Giordano, M. Tzschoppe, M. Barelli, J. Vogt, C. Huck, F. Canepa, A. Pucci, and F. Buatier de Mongeot, ACS Appl. Mater. Interfaces 12, 11155–11162 (2020)

4. “Color Routing via Cross-Polarized Detuned Plasmonic Nanoantennas in Large-Area Metasurfaces” M.Barelli, et al., Nano Lett. 20, 4121−4128 (2020)

5. “Anisotropic MoS2 Nanosheets Grown on Self‐Organized Nanopatterned Substrates" C. Martella, et al., Adv. Mater. 29, 1605785 (2017)

6. “Ultra-broadband photon harvesting in large-area few-layer MoS 2 nanostripe gratings” M. Bhatnagar, et al., Nanoscale 12, 24385 (2020)

7. “Broadband and Tunable Light Harvesting in Nanorippled MoS2 Ultrathin Films” M Bhatnagar, et al, ACS applied materials & interfaces 13 (11), 13508 (2021).

8. “Wavelength-Dependent Plasmonic Photobleaching of Dye Molecules by Large-Area Au Nanostripe Arrays“ M Barelli. et al., ACS Applied Nano Materials 5, 3470 (2022)