Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 8628–8635 |
| Seitenumfang | 8 |
| Fachzeitschrift | Nano letters |
| Jahrgang | 25 |
| Ausgabenummer | 21 |
| Frühes Online-Datum | 19 Mai 2025 |
| Publikationsstatus | Veröffentlicht - 28 Mai 2025 |
Abstract
Coupled plasmon resonances of adjacent particles in densely packed nanorod metamaterials can introduce extraordinary optical features, like cavity resonance modes. These modes, being commonly realized in metallic metamaterials, can be exploited for plasmonic sensing or optical modulation, due to strong optical and electrical field enhancement in the cavities. However, modulation of plasmon resonances in metallic nanostructures is limited due to their intrinsically high charge carrier concentration. We introduce a new metamaterial based on metal oxides, respectively an array composed of doped tin oxide nanorods featuring cavity resonance modes. By means of numerical simulations, the optical response of the fabricated plasmonic metamaterial is calculated and compared with the experimental findings in order to understand and clarify the nature of the optical modes. Moreover, dynamic modulation of the optical response is demonstrated by the electrochemical injection of electrons into the nanorods, thus paving the way to electro-optical modulation of such metamaterials.
ASJC Scopus Sachgebiete
- Chemische Verfahrenstechnik (insg.)
- Bioengineering
- Chemie (insg.)
- Allgemeine Chemie
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Ingenieurwesen (insg.)
- Maschinenbau
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in: Nano letters, Jahrgang 25, Nr. 21, 28.05.2025, S. 8628–8635.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Dynamic Modulation of Coupled Plasmon Resonances in Antimony-Doped Tin Oxide Nanorod Metamaterial by Charge Carrier Injection
AU - Herzog, Thomas
AU - Habibpourmoghadam, Atefeh
AU - Pannewitz, Nele
AU - Krysiak, Yaşar
AU - Morales, Irene
AU - Locmelis, Sonja
AU - Calà Lesina, Antonio
AU - Polarz, Sebastian
N1 - Publisher Copyright: © 2025 The Authors. Published by American Chemical Society.
PY - 2025/5/28
Y1 - 2025/5/28
N2 - Coupled plasmon resonances of adjacent particles in densely packed nanorod metamaterials can introduce extraordinary optical features, like cavity resonance modes. These modes, being commonly realized in metallic metamaterials, can be exploited for plasmonic sensing or optical modulation, due to strong optical and electrical field enhancement in the cavities. However, modulation of plasmon resonances in metallic nanostructures is limited due to their intrinsically high charge carrier concentration. We introduce a new metamaterial based on metal oxides, respectively an array composed of doped tin oxide nanorods featuring cavity resonance modes. By means of numerical simulations, the optical response of the fabricated plasmonic metamaterial is calculated and compared with the experimental findings in order to understand and clarify the nature of the optical modes. Moreover, dynamic modulation of the optical response is demonstrated by the electrochemical injection of electrons into the nanorods, thus paving the way to electro-optical modulation of such metamaterials.
AB - Coupled plasmon resonances of adjacent particles in densely packed nanorod metamaterials can introduce extraordinary optical features, like cavity resonance modes. These modes, being commonly realized in metallic metamaterials, can be exploited for plasmonic sensing or optical modulation, due to strong optical and electrical field enhancement in the cavities. However, modulation of plasmon resonances in metallic nanostructures is limited due to their intrinsically high charge carrier concentration. We introduce a new metamaterial based on metal oxides, respectively an array composed of doped tin oxide nanorods featuring cavity resonance modes. By means of numerical simulations, the optical response of the fabricated plasmonic metamaterial is calculated and compared with the experimental findings in order to understand and clarify the nature of the optical modes. Moreover, dynamic modulation of the optical response is demonstrated by the electrochemical injection of electrons into the nanorods, thus paving the way to electro-optical modulation of such metamaterials.
KW - cavity resonance mods
KW - electro-optical modulation
KW - metamaterial
KW - nanorod arrays
KW - tin oxide
KW - tunable plasmon resonance
UR - http://www.scopus.com/inward/record.url?scp=105005642302&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.5c01485
DO - 10.1021/acs.nanolett.5c01485
M3 - Article
AN - SCOPUS:105005642302
VL - 25
SP - 8628
EP - 8635
JO - Nano letters
JF - Nano letters
SN - 1530-6984
IS - 21
ER -