Exciting High-Order Plasmon Mode Using Metal-Insulator-Metal Bowtie Nanoantenna.

Xiaoxin Zhang, Rulin Guan, Qingxiu Ding, Chen Wang, Yaqiong Li, Dengchao Huang, Qigong Chen, Zheng Yang

Abstract read

In one paragraph

Article in Nanomaterials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Xiaoxin ZhangKey Laboratory of Advanced Perception and Intelligent Control of High-End Equipment, Ministry of Education, School of Integrated Circuits, College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Rulin GuanKey Laboratory of Advanced Perception and Intelligent Control of High-End Equipment, Ministry of Education, School of Integrated Circuits, College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Qingxiu DingKey Laboratory of Advanced Perception and Intelligent Control of High-End Equipment, Ministry of Education, School of Integrated Circuits, College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Chen WangKey Laboratory of Advanced Perception and Intelligent Control of High-End Equipment, Ministry of Education, School of Integrated Circuits, College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Yaqiong LiKey Laboratory of Advanced Perception and Intelligent Control of High-End Equipment, Ministry of Education, School of Integrated Circuits, College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Dengchao HuangKey Laboratory of Advanced Perception and Intelligent Control of High-End Equipment, Ministry of Education, School of Integrated Circuits, College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Qigong ChenKey Laboratory of Advanced Perception and Intelligent Control of High-End Equipment, Ministry of Education, School of Integrated Circuits, College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Zheng YangSchool of Robot Engineering, Anhui San Lian University, Hefei 230000, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Noble metal nanostructures have garnered significant attention for their exceptional optical properties, particularly Localized Surface Plasmon Resonance (LSPR), which enables pronounced near-field electromagnetic enhancements. Among these, bowtie nanoantennas (BNAs) are distinguished by their intense plasmonic coupling within nanogap regions, making them highly effective for applications such as surface-enhanced Raman scattering (SERS). However, the practical utility of conventional BNAs is often hindered by small hotspot areas and significant scattering losses at their peak near-field enhancement wavelengths. To overcome these limitations, we have designed a novel notch metal-insulator-metal bowtie nanoantenna (NMIM-BNA) structure. This innovative design integrates dielectric materials with Ag-BNA nanostructures and strategically positions arrays of silver (Ag) nanorods within the central nanogap. By coupling the larger NMIM-BNA framework with these smaller Ag nanorod arrays, higher-order plasmon modes (often referred to as dark modes) are effectively excited. Consequently, the NMIM-BNA exhibits substantial electric field enhancement, particularly at the Fano dip wavelength, arising from the efficient coupling of these higher-order plasmon modes with dipole plasmon modes. Compared to conventional Ag-BNA nanoantennas, our NMIM-BNA provides a significantly larger hotspot region and an enhanced near-field amplification factor, underscoring its strong potential for advanced SERS applications.

Indexed as

high-order plasmon modesLSPRnotch metal-insulator- metal bowtie nanoantennaSERS

Identifiers

PMID40559244

DOI10.3390/nano15120882

PMCPMC12195817

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.