Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 14645–14655 |
| Seitenumfang | 11 |
| Fachzeitschrift | ACS Applied Nano Materials |
| Jahrgang | 6 |
| Ausgabenummer | 16 |
| Frühes Online-Datum | 15 Aug. 2023 |
| Publikationsstatus | Veröffentlicht - 25 Aug. 2023 |
| Extern publiziert | Ja |
Abstract
This paper introduces an approach that enables highly adjustable surface adsorption of single plasmonic nanostructures using polar surface arrays. The plasmonic nanostructures are made from DNA origami and functionalized with gold nanoparticles for surface-enhanced spectroscopic techniques. To ensure that the contribution of individual nanostructures to the measured signal can be detected without any interference from the surrounding structures, we aimed to control the distance and set a minimum gap between the nanostructures on the substrate surface. We describe the fabrication process of the polar surface array based on electron beam lithography, followed by functionalization. Our results indicate that the concentration of DNA origami structures and the duration of the incubation primarily affect the number of adsorbed nanostructures. Density functional theory simulation explains the selective adsorption of plasmonic nanostructures due to the substrate surface properties. The spatial arrangement of nanostructures allows for the reliable identification of the Raman signal’s location, while a falsified identification resulting from agglomeration is prevented.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
Zitieren
- Standard
- Harvard
- Apa
- Vancouver
- BibTex
- RIS
in: ACS Applied Nano Materials, Jahrgang 6, Nr. 16, 25.08.2023, S. 14645–14655.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Surface-Enhanced Raman Spectroscopy on Selectively Adsorbed Plasmonic Nanostructures Using Polar Surface Arrays
AU - Wang, Zunhao
AU - Liu, Zhe
AU - Dempwolf, Wibke
AU - Molle, Julia
AU - Kanehira, Yuya
AU - Kogikoski, Sergio
AU - Etzkorn, Markus
AU - Bald, Ilko
AU - Stosch, Rainer
AU - Wundrack, Stefan
N1 - Funding information: This work was financially supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) Research Training Group GrK1952/2, Metrology for Complex Nanosystems (NanoMet). Furthermore, this work was supported by the Braunschweig International Graduate School of Metrology (B-IGSM) and the Laboratory for Emerging Nanometrology (LENA) of TU Braunschweig. We thank the high-performance computer cluster (HPC) of PTB on which the DFT simulations were carried out. Z.L. acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG) under Germany’s Excellence Strategy–EXC 2123 QuantumFrontiers, Project ID: 390837967, as well as from the Ministry of Science and Culture of Lower Saxony under the project QuanTec., Project ID: 76251 (ZN 3820). We acknowledge DFG funding under grant INST 188/452-1 FUGG. XPS measurements have been performed on an instrument supported by the DFG (INST 188/444-1 FUGB). Y.K. and S.K. acknowledge funding by the European Research Council (ERC; consolidator grant no. 772752)
PY - 2023/8/25
Y1 - 2023/8/25
N2 - This paper introduces an approach that enables highly adjustable surface adsorption of single plasmonic nanostructures using polar surface arrays. The plasmonic nanostructures are made from DNA origami and functionalized with gold nanoparticles for surface-enhanced spectroscopic techniques. To ensure that the contribution of individual nanostructures to the measured signal can be detected without any interference from the surrounding structures, we aimed to control the distance and set a minimum gap between the nanostructures on the substrate surface. We describe the fabrication process of the polar surface array based on electron beam lithography, followed by functionalization. Our results indicate that the concentration of DNA origami structures and the duration of the incubation primarily affect the number of adsorbed nanostructures. Density functional theory simulation explains the selective adsorption of plasmonic nanostructures due to the substrate surface properties. The spatial arrangement of nanostructures allows for the reliable identification of the Raman signal’s location, while a falsified identification resulting from agglomeration is prevented.
AB - This paper introduces an approach that enables highly adjustable surface adsorption of single plasmonic nanostructures using polar surface arrays. The plasmonic nanostructures are made from DNA origami and functionalized with gold nanoparticles for surface-enhanced spectroscopic techniques. To ensure that the contribution of individual nanostructures to the measured signal can be detected without any interference from the surrounding structures, we aimed to control the distance and set a minimum gap between the nanostructures on the substrate surface. We describe the fabrication process of the polar surface array based on electron beam lithography, followed by functionalization. Our results indicate that the concentration of DNA origami structures and the duration of the incubation primarily affect the number of adsorbed nanostructures. Density functional theory simulation explains the selective adsorption of plasmonic nanostructures due to the substrate surface properties. The spatial arrangement of nanostructures allows for the reliable identification of the Raman signal’s location, while a falsified identification resulting from agglomeration is prevented.
KW - controlled physisorption
KW - DNA origami
KW - Langmuir isotherm
KW - self-assembled monolayers
KW - single molecule detection
KW - surface functionalization
KW - surface-enhanced Raman scattering
UR - http://www.scopus.com/inward/record.url?scp=85169060384&partnerID=8YFLogxK
U2 - 10.1021/acsanm.3c01776
DO - 10.1021/acsanm.3c01776
M3 - Article
AN - SCOPUS:85169060384
VL - 6
SP - 14645
EP - 14655
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 16
ER -