Optimized Resonance Control in Gold T-shaped Nanoantennas for Advanced Plasmonic Applications

Authors

Keywords:

Dark-field wavelength analysis, Electromagnetic hot spot, FDTD simulations, Plasmonic, Plasmonic particle resonance, T-shaped Nanoantenna

Abstract

Nanoscale resonant optical antennas are highly regarded for their capacity to enhance electric fields in localized volumes smaller than the diffraction limit. This makes them particularly attractive for coupling with quantum emitters. However, a significant challenge in applications involving spectral shifts is fabricate nanoantennas that provide two distinct resonances—one at the excitation frequency and another at the emission frequency. To address this, we propose a coupled T-shaped nanoantenna design that allows for independent control of the resonances, while sharing a common electromagnetic hot spot within the antenna gap. We present the fabrication of such structures and evaluate their spatial, time-integrated, spectral, and polarization-dependent electromagnetic field characteristics, both experimentally and theoretically. The nanoantennas display two separate resonances, each with distinct spectral and polarization behaviors. These resonance wavelengths can be independently adjusted by changing the geometry of the individual T-shaped antennas.

Author Biographies

  • Tanjoy Mahmud, Nanjing University of Information Science and Technology, Nanjing, China

    Tanjoy Mahmud, MSc, Nanjing University of Information Science and Technology

    School of Electronics and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, China, Master's student. Main research direction is Nanophotonic Sensors.

  • Md Emadur Rahman Ekra, Nanjing University of Information Science and Technology, Nanjing, China

    Md Emadur Rahman Ekra, MSc, Nanjing University of Information Science and Technology

    School of Electronics and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, China, Master's student. Main research direction is indoor positioning.

  • Tanvir Ahmed, Nanjing University of Information Science and Technology, China

    Tanvir Ahmed, MSc, Nanjing University of Information Science and Technology

    School of Electronics and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, China, Master's student. Main research direction is Remote Sensing.

  • Dipayon Bachar, Nanjing University of Information Science and Technology, China

    Dipayon Bachar, MSc, Nanjing University of Information Science and Technology

    School of Electronics and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, China, Master's student. Main research direction is Quantum Communication Technology.

  • Tonmoy Mahmud, Uttara University, Bangladesh

    Tonmoy Mahmud, BSc, Uttara University

    School of Computer Science & Engineering, Uttara University: Dhaka, Dhaka Division, BD. Bachelor Student. Main Reserach direction is IT. 

References

Abir, T., Sideris, S., & Ellenbogen, T. (2024). External chirality enhancing downconversion in a waveguide-coupled nonlinear plasmonic metasurface. Optics Letters, 49(5), 1241–1244.

Adamczyk, A. K., et al. (2024). Coupling single molecules to DNA-based optical antennas with position and orientation control. ACS Photonics, 11(12), 5267–5272.

Abertavi, A., Jabbari, M., & Solookinejad, G. (2024). Novel multi-band plasmon filters based on double-band surface plasmon polarizations.

Ahamad, M. A., & Inam, F. A. (2024). Electromagnetic scattering controlled all-dielectric cavity-antenna for bright, directional, and purely radiative single-photon emission. Journal of Applied Physics, 136(8), 930-945.

Babicheva, V. E. (2023). Optical processes behind plasmonic applications. Nanomaterials, 13, 1270-1284.

Bralović, N., Lemmer, U., & Hussein, M. (2024). Asymmetric cross-shaped optical antennas with wide spectral tunability and high optical cross-sections. Plasmonics, 19(1), 179–191.

Chahshouri, F., & Talebi, N. (2023). Tailoring near-field-mediated photon electron interactions with light polarization. New Journal of Physics, 25(1), 013033-013048.

Chamorro-Posada, P. (2024). Hybrid plasmonic nanoantennas using corner reflectors for enhanced single-photon emission. arXiv e-prints, arXiv-2410.

Chen, G., et al. (2024). Infrared color-sorting metasurfaces. Nanoscale, 16(30), 14490–14497.

Choi, S., et al. (2023). Near- and far-field study of polarization-dependent surface plasmon resonance in bowtie nano-aperture arrays. Optics Express, 31(20), 31760–31767.

Cruciano, C., et al. (2025). Shaping the emission directivity of single quantum dots in dielectric nanodisks exploiting Mie resonances. ACS Nano.

Dahiya, A., & Kumar, P. S. (2023). Tailoring the directional dependent emitter interaction based plasmonic antenna character of Ag–Au heterodimer. Optics & Laser Technology, 162, 109254-109267.

Hu, X., et al. (2022). Near-field nano-spectroscopy of strong mode coupling in phonon-polaritonic crystals. Applied Physics Reviews, 9(2), 382-398.

Jana, S., Durst, S., & Lippitz, M. (2024). Fluorescence-detected two-dimensional electronic spectroscopy of a single molecule. Nano Letters, 24(40), 12576–12581.

Jeong, T.-I., et al. (2023). Deterministic nanoantenna array design for stable plasmon-enhanced harmonic generation. Nanophotonics, 12(3), 619–629.

Kim, G.-H., Son, J., & Nam, J.-M. (2025). Advances, challenges, and opportunities in plasmonic nanogap-enhanced Raman scattering with nanoparticles. ACS Nano.

Kim, H., et al. (2025). Optical metasurfaces for biomedical imaging and sensing. ACS Nano.

Kimmitt, N., & Wertz, E. A. (2021). Tracking the coupling of single emitters to plasmonic nanoantennas with single-molecule super-resolution imaging. ACS Photonics, 8(4), 1020–1026.

Khoshdel, V., & Shokooh-Saremi, M. (2021). Multilayered L-shaped nanoantenna arrays with an increased electric field enhancement. Journal of the Optical Society of America B, 38(5), 1604–1612.

Kumar, A., et al. (2024). Optical absorption driven by efficient refraction and light concentration for photovoltaic applications. Solar Energy Materials and Solar Cells, 264, 112625.

Lee, N., et al. (2023). Multi-resonant Mie resonator arrays for broadband light trapping in ultrathin c-Si solar cells. Advanced Materials, 35(29), 2210941.

Li, Y., et al. (2024). Resonance and topological characteristics of BICs based on geared structure THz metasurface for sensing applications. IEEE Sensors Journal.

Liang, Y., et al. (2024). Engineering of the Fano resonance spectral response with non-Hermitian metasurfaces. Optics Express, 32(5), 7158–7170.

Lin, L., et al. (2024). Manipulating Fano coupling in an opto-thermoelectric field. Advanced Science, 2412454.

Lumerical Solutions, Inc. (2025). Lumerical software. https://www.lumerical.com/

Ma, X., et al. (2024). Fano resonance based on a triangular resonator and its application on nanosensing. Modern Physics Letters B, 38(22), 2450172.

Mahdi, R. H., & Jawad, H. A. (2023). Plasmonic optical nano-antenna for biomedical applications. In Plasmonic nanostructures: Basic concepts, optimization and applications. IntechOpen.

Mathew, S., et al. (2025). Observing the influence of second-harmonic tangential surface source in gold plasmonic nanostructures. Physical Review A, 111(2), 023520-023531.

Meier, J., et al. (2023). Controlling field asymmetry in nanoscale gaps for second harmonic generation. Advanced Optical Materials, 11(21), 2300731-2300752.

Miyata, M. (2024). High-sensitivity color image sensor with full-color-sorting metalenses. JSAP Review 2024, 240408.

Moghaddam, M. H., et al. (2024). Tuning 1D plasmonic gap at nanometer scale for advanced SERS detection. Advanced Optical Materials, 2403021.

Park, J., Jeon, S., & Kim, S. J. (2021). Subwavelength, polarimetric color sorting by densely interleaved nano-resonators. Optics Communications, 485, 126711.

Qarony, W., et al. (2023). On the potential of optical nanoantennas for visibly transparent solar cells. ACS Photonics, 10(12), 4205–4214.

Qian, S., et al. (2023). A through-hole antenna array for joint optical and millimeter sensing applications. In International Applied Computational Electromagnetics Society Symposium (ACES). IEEE.

Qing, Y. M., et al. (2024). Polarization-dependent near-field coupling and far-field harmonic modulation in a graphene-based plasmonic nanostructure. Physica Scripta, 99(10), 105547.

Schust, J., et al. (2023). Spatially resolved nonlinear plasmonics. Nano Letters, 23(11), 5141–5147.

Sethi, W. T. (2018). Optical antennas for harvesting solar radiation energy (Doctoral dissertation, Université de Rennes).

Singh, A., et al. (2025). A review on design, development and characterization of plasmonic nano-antenna for photonic applications. Journal of Optical Communications, 45(s1), s2387–s2400.

Smirnov, V., et al. (2021). Transmitting surface plasmon polaritons across nanometer-sized gaps by optical near-field coupling. ACS Photonics, 8(3), 832–840.

Tanwar, S., et al. (2024). Self-assembled bimetallic Au–Ag nanorod vertical array for single-molecule plasmonic sensing. ACS Applied Nano Materials, 7(2), 1636–1645.

Tsurimaki, Y., Benzaouia, M., & Fan, S. (2024). Nanophotonic heat exchanger for enhanced near-field radiative heat transfer. Nano Letters, 24(15), 4521–4527.

Ullah, H., et al. (2020). Giant circular dichroism of chiral L-shaped nanostructure coupled with achiral nanorod. Nanotechnology, 31(27), 275205.

Wagner, M., Seifert, A., & Liz-Marzán, L. M. (2022). Towards multi-molecular surface-enhanced infrared absorption using metal plasmonics. Nanoscale Horizons, 7(11), 1259–1278.

Wang, J., Zhang, L., & Qiu, M. (2023). Nonlinear plasmonics: Second-harmonic generation and multiphoton photoluminescence. PhotoniX, 4(1), 32.

Wang, N., Zhong, Y., & Liu, H. (2022). Spontaneous emission enhancement by rotationally symmetric optical nanoantennas. Optics Express, 30(8), 12797–12822.

Wang, Y., et al. (2023). Modified bow-tie antenna array with efficient electric near-field enhancement for terahertz band. Optics Communications, 549, 129849.

Wu, S.-H., et al. (2024). A broadband light-trapping nanostructure for InGaP/GaAs dual-junction solar cells. Solar RRL, 8(22), 2400531.

Xiao, X., et al. (2024). Nanofocusing in critically coupled nanogap waveguide resonators. ACS Photonics, 11(7), 2836–2842.

Xie, Y.-J., et al. (2025). Experimental realization of tunable Fano resonances in two coupled silicon micromechanical resonators. Physical Review Research, 7(1), 013002.

Yang, A., et al. (2023). Three orthogonal polarization distribution mapping of tightly focused fields with a dual-mode waveguide probe. Laser & Photonics Reviews, 17(12), 2300032.

Yu, M., et al. (2024). Bowtie loaded meander antenna with asymmetric multi-source excitation. In IRMMW-THz Conference. IEEE.

Zhang, D., et al. (2018). Coupling of fluorophores in single nanoapertures with Tamm plasmon structures. The Journal of Physical Chemistry C, 123(2), 1413–1420.

Zhang, K., et al. (2024). A compact multi-mode antenna design based on metasurface for wideband applications. IEEE Transactions on Antennas and Propagation.

Zhao, W., et al. (2021). Engineering single-molecule fluorescence with asymmetric nano-antennas. Light: Science & Applications, 10(1), 79.

Zhao, Y., Chen, Y., & Hao, L. (2024). Fano and electromagnetically induced transparency resonances in dual side-coupled photonic crystal nanobeam cavities. Materials, 17(24), 6213.

Zotev, P. G., et al. (2024). Single photon emitters in monolayer semiconductors coupled to nanoantennas. arXiv preprint, arXiv:2408.01070.

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Published

2026-02-24

Issue

Vol. 8 No. 1 (2027): INJIISCOM: VOLUME 8, ISSUE 1, JUNE 2027 (Online First)

Section

Articles

How to Cite

[1]
T. Mahmud, M. E. R. Ekra, T. . Ahmed, D. Bachar, and T. Mahmud, “Optimized Resonance Control in Gold T-shaped Nanoantennas for Advanced Plasmonic Applications”, Int. J. Inform. Inf. Sys. and Comp. Eng., vol. 8, no. 1, pp. 1–19, Feb. 2026, Accessed: Jun. 06, 2026. [Online]. Available: https://ojs.unikom.ac.id/index.php/injiiscom/article/view/15995