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Optical Properties of Au-Ag Bimetallic Nanoparticles of Different Shapes for Making Efficient Bimetallic-Photonic Whispering Gallery Mode Hybrid Microresonators

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Abstract

For the first time, we propose a bimetallic-photonic whispering gallery mode (WGM) hybrid microresonator for the detection and sizing of single protein molecules in real time. To optimize the sensitivity of hybrid microresonators, theoretical simulations have been carried out to understand the optical properties of different types of Au-Ag bimetallic nanoparticles such as solid nanospheres, dielectric core-bimetallic nanoshells, nanostars, and nanoprisms using Lorenz-Mie theory, Aden-Kerker theory, and finite element method (FEM). The role of size and Au-Ag ratio on the optical properties of the nanospheres and nanoshells has been studied. In addition, the effect of the Au-Ag ratio on the optical properties of nanostars and nanoprisms has been investigated. The local electric field intensity enhancement values of bimetallic nanostructures of different shapes have been estimated using the FEM. Finally, the advantages of the bimetallic-WGM hybrid microresonator as compared to the monometallic-WGM hybrid microresonator have been explained in detail.

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References

  1. Buerk DG (2014) Biosensors: theory and applications. CRC Press, Florida

  2. Merkoçi A (ed) (2009) Biosensing using nanomaterials. Jonh Wiley & Sons, New Jersey

  3. Vahala KJ (2003) Optical microcavities. Nature 424(6950):839

    Article  CAS  Google Scholar 

  4. Dantham VR, Holler S, Barbre C, Keng D, Kolchenko V, Arnold S (2013) Label-free detection of single protein using a nanoplasmonic-photonic hybrid microcavity. Nano Lett 13(7):3347–3351

    Article  CAS  Google Scholar 

  5. Kuladeep R, Jyothi L, Alee KS, Deepak KLN, Rao DN (2012) Laser-assisted synthesis of Au-Ag alloy nanoparticles with tunable surface plasmon resonance frequency. Opt Mater Express 2(2):161–172

    Article  CAS  Google Scholar 

  6. Zhang YW (ed) (2018) Bimetallic nanostructures: shape-controlled synthesis for catalysis, plasmonics, and sensing applications. John Wiley & Sons, New Jersey

  7. Fan M, Lai FJ, Chou HL, Lu WT, Hwang BJ, Brolo AG (2013) Surface-enhanced Raman scattering (SERS) from Au: Ag bimetallic nanoparticles: the effect of the molecular probe. Chem Sci 4(1):509–515

    Article  CAS  Google Scholar 

  8. Gomes JF, Garcia AC, Pires C, Ferreira EB, Albuquerque RQ, Tremiliosi-Filho G, Gasparotto LH (2014) Impact of the AuAg NPs composition on their structure and properties: a theoretical and experimental investigation. J Phys Chem C 118(49):28868–28875

    Article  CAS  Google Scholar 

  9. Cui Y, Ren B, Yao JL, Gu RA, Tian ZQ (2006) Synthesis of AgcoreAushell bimetallic nanoparticles for immunoassay based on surface-enhanced Raman spectroscopy. J Phys Chem B 110(9):4002–4006

    Article  CAS  Google Scholar 

  10. William RV, Das GM, Dantham VR, Laha R (2019) Enhancement of single molecule Raman scattering using sprouted potato-shaped bimetallic nanoparticles. Sci Rep 9(1):10771

    Article  CAS  Google Scholar 

  11. Zhu J (2005) Theoretical study of the optical absorption properties of Au–Ag bimetallic nanospheres. Phys E 27(1–2):296–301

    Article  CAS  Google Scholar 

  12. Wu D, Liu X (2010) Optimization of the bimetallic gold and silver alloy nanoshell for biomedical applications in vivo. Appl Phys Lett 97(6):061904

    Article  Google Scholar 

  13. Knight JC, Cheung G, Jacques F, Birks TA (1997) Phase-matched excitation of whispering-gallery-mode resonances by a fiber taper. Opt Lett 22(15):1129–1131

    Article  CAS  Google Scholar 

  14. Vollmer F, Arnold S, Keng D (2008) Single virus detection from the reactive shift of a whispering-gallery mode. Proc Natl Acad Sci 105(52):20701–20704

    Article  CAS  Google Scholar 

  15. Bohren CF, Huffman DR (2008) Absorption and scattering of light by small particles. Wiley-VCH, Weinheim

  16. Hightower RL, Richardson CB (1988) Resonant Mie scattering from a layered sphere. Appl Opt 27(23):4850–4855

    Article  CAS  Google Scholar 

  17. Rioux D, Vallières S, Besner S, Muñoz P, Mazur E, Meunier M (2014) An analytic model for the dielectric function of Au, Ag, and their alloys. Adv Opt Mater 2(2):176–182

    Article  Google Scholar 

  18. Das GM, Dantham VR, Arya A (2019) Plasmonic properties of nano-and microscale dielectric substrates-supported nanoshell dimers: effects of type and propagation direction of excitation light. IEEE Photonics J 11(1):1–8

    Article  CAS  Google Scholar 

  19. Link S, Wang ZL, El-Sayed MA (1999) Alloy formation of gold−silver nanoparticles and the dependence of the plasmon absorption on their composition. J Phys Chem B 103(18):3529–3533

    Article  CAS  Google Scholar 

  20. Knight MW, Halas NJ (2008) Nanoshells to nanoeggs to nanocups: optical properties of reduced symmetry core-shell nanoparticles beyond the quasistatic limit. New J Phys 10(10):105006

    Article  Google Scholar 

  21. Urbieta M, Barbry M, Zhang Y, Koval P, Sánchez-Portal D, Zabala N, Aizpurua J (2018) Atomic-scale lightning rod effect in plasmonic picocavities: a classical view to a quantum effect. ACS Nano 12(1):585–595

    Article  CAS  Google Scholar 

  22. Kim M, Lee KY, Jeong GH, Jang J, Han SW (2007) Fabrication of Au–Ag alloy nanoprisms with enhanced catalytic activity. Chem Lett 36(11):1350–1351

    Article  CAS  Google Scholar 

  23. Aherne D, Gara M, Kelly JM, Gun'ko YK (2010) From Ag nanoprisms to triangular AuAg nano-boxes. Adv Funct Mater 20(8):1329–1338

    Article  CAS  Google Scholar 

  24. Liu Y, Yuan H, Kersey F, Register J, Parrott M, Vo-Dinh T (2015) Plasmonic gold nanostars for multi-modality sensing and diagnostics. Sensors 15(2):3706–3720

    Article  CAS  Google Scholar 

  25. Sharma M, Pudasaini PR, Ruiz-Zepeda F, Vinogradova E, Ayon AA (2014) Plasmonic effects of Au/Ag bimetallic multi-spiked nanoparticles for photovoltaic applications. ACS Appl Mater Interfaces 6(17):15472–15479

    Article  CAS  Google Scholar 

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Funding

The authors acknowledge the funding from the Council of Scientific and Industrial Research (CSIR), Government of India, under Grant 03(1406)/17/EMR-II.

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  1. Department of Physics, Indian Institute of Technology Patna, Patna, Bihar, 801103, India

    Pragya Tiwari, Gour Mohan Das & Venkata Ramanaiah Dantham

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  1. Pragya Tiwari
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  2. Gour Mohan Das
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  3. Venkata Ramanaiah Dantham
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Correspondence to Venkata Ramanaiah Dantham.

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Tiwari, P., Das, G.M. & Dantham, V.R. Optical Properties of Au-Ag Bimetallic Nanoparticles of Different Shapes for Making Efficient Bimetallic-Photonic Whispering Gallery Mode Hybrid Microresonators. Plasmonics 15, 1251–1260 (2020). https://doi.org/10.1007/s11468-020-01141-7

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