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Cavity-Induced NIR Tunability in Optical Response and Energy Confinement of Dumbbell-Shaped Au Nanorod

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Abstract

Gold nanorod has been shown to exhibit two distinct plasmon resonances in extinction spectra, a transverse mode and a longitudinal mode, which can be tuned by changing the aspect ratio of length and width. What will happen when a nanorod with a constant aspect ratio compounds with semispheres? A theoretical model that combines gold nanorod and semispheres constructing a dumbbell-shaped nanorod is performed in this paper. We report a detailed theoretical investigation on how the nanostructures with a cavity based on gold nanorods can tune the optical properties and enhance localized field. The results show that the topography of the nanorods provides other degrees of freedom to tune the optical properties. Indeed, when the direction of incident light is along the x-axis, the resonance frequency and spectral width of longitudinal modes can be tuned in a wide wavelength range by varying the radius of semisphere-suspended heads. The resonance modes in the infrared zone can be significantly tuned up to 800 nm by varying the radius of semispheres. Also, the field distribution of the dumbbell-shaped nanorod can be significantly changed by plasmon excitement of semisphere-suspended heads. Field amplification up to four orders of magnitude can be obtained, which can provide a new path to tune the optical response of the nanorod and will have wide applications in localized surface plasmon resonance (LSPR)-based biosensing and intracellular imaging and photothermal therapy.

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References

  1. Smythe EJ, Cubukcu E, Capasso F (2007) Optical properties of surface plasmon resonances of coupled metallic nanorods. Opt Express 15:7439–7447

    Article  Google Scholar 

  2. Zou S, Schatz GC (2005) Silver nanoparticle array structures that produce giant enhancements in electromagnetic fields. Chem Phys Lett 403:62–67

    Article  CAS  Google Scholar 

  3. Slaughter LS, Wu Y, Willingham BA, Nordlander P, Link S (2010) Effects of symmetry breaking and conductive contact on the plasmon coupling in gold nanorod dimers. ACS Nano 4:4657–4666

    Article  CAS  Google Scholar 

  4. Maier SA, Atwater HA (2005) Plasmonics: localization and guiding of electromagnetic energy in metal/dielectric structures. J Appl Phys 98:11101

    Article  Google Scholar 

  5. Murphy CJ, Sau TK, Gole AM, Orendorff CJ, Gao J, Gou L, Hunyadi SE, Li T (2005) Anisotropic metal nanoparticles: synthesis, assembly, and optical applications. J Phys Chem B 109:13857–13870

    Article  CAS  Google Scholar 

  6. Ming T, Zhao L, Chen H, Woo KC, Wang J, Lin HQ (2011) Experimental evidence of plasmophores: plasmon-directed polarized emission from gold nanorod–fluorophore hybrid nanostructures. Nano Lett 11:2296–2303

    Article  CAS  Google Scholar 

  7. Bai Z, Chen R, Si P, Huang Y, Sun H, Kim DH (2013) Fluorescent pH sensor based on Ag@ SiO2 core-shell nanoparticle. ACS Appl Mater Interfaces 5:5856–5860

    Article  CAS  Google Scholar 

  8. Schuller JA, Barnard ES, Cai WS, Jun YC, White JS, Brongersma ML (2010) Plasmonics for extreme light concentration and manipulation. Nat Mater 9:193–204

    Article  CAS  Google Scholar 

  9. Boca SC, Astilean S (2010) Detoxification of gold nanorods by conjugation with thiolated poly (ethylene glycol) and their assessment as SERS-active carriers of Raman tags. Nanotechnology 21:235601

    Article  Google Scholar 

  10. Durr NJ, Larson T, Smith DK, Korgel BA, Sokolov K, Ben-Yakar A (2007) Two-photon luminescence imaging of cancer cells using molecularly targeted gold nanorods. Nano Lett 7:941–945

    Article  CAS  Google Scholar 

  11. Lee SE, Sasaki DY, Perroud TD, Yoo D, Patel KD, Lee LP (2009) Biologically functional cationic phospholipid-gold nanoplasmonic carriers of RNA. J Am Chem Soc 131:14066–14074

    Article  CAS  Google Scholar 

  12. Liao H, Hafner JH (2005) Gold nanorod bioconjugates. Chem Mater 17:4636–4641

    Article  CAS  Google Scholar 

  13. Huang X, El-Sayed IH, Qian W, El-Sayed MA (2007) Cancer cells assemble and align gold nanorods conjugated to antibodies to produce highly enhanced, sharp, and polarized surface Raman spectra: a potential cancer diagnostic marker. Nano Lett 7:1591–1597

    Article  CAS  Google Scholar 

  14. Cong B, Kan C, Wang H, Liu J, Xu H, Ke S (2014) Gold nanorods: near-infrared plasmonic photothermal conversion and surface coating. J Mater Sci Chem Eng 2:20

    CAS  Google Scholar 

  15. Vigderman L, Khanal BP, Zubarev ER (2012) Functional Au nanorods: synthesis, self-assembly and sensing applications. Adv Mater 24:4811–4841

    Article  CAS  Google Scholar 

  16. Nepal D, Park K, Vaia RA (2012) High-yield assembly of soluble and stable gold nanorod pairs for high-temperature plasmonics. Small 8:1013–1020

    Article  CAS  Google Scholar 

  17. Zhang LB, Zhou X, Bao SX, Shi YF, Wang Y (2011) Rational design and SERS properties of side-by-side, end-to-end and end-to-side assemblies of Au nanorods. J Mater Chem 21:14448–14455

    Article  Google Scholar 

  18. Nie Z, Petukhova A, Kumacheva E (2010) Properties and emerging applications of self-assembled structures made from inorganic nanoparticles. Nat Nanotechnol 5:15–25

    Article  CAS  Google Scholar 

  19. Grzelczak M, Vermant J, Furst EM, Liz-Marzan LM (2010) Directed self-assembly of nanoparticles. ACS Nano 4:3591–3605

    Article  CAS  Google Scholar 

  20. Halas NJ, Lal S, Chang W-S, Link S, Nordlander P (2011) Plasmons in strongly coupled metallic nanostructures. Chem Rev 111:3913–3961

    Article  CAS  Google Scholar 

  21. Funston AM, Novo C, Davis TJ, Mulvaney P (2009) Plasmon coupling of gold nanorods at short distances and in different geometries. Nano Lett 9:1651–1658

    Article  CAS  Google Scholar 

  22. Nie Z, Fava D, Kumacheva E, Zou S, Walker GC, Rubinstein M (2007) Self-assembly of metal–polymer analogues of amphiphilic triblock copolymers. Nat Mater 6:609–614

    Article  CAS  Google Scholar 

  23. Ozbay E (2006) Plasmonics: merging photonics and electronics at nanoscale dimensions. Science 311:189–193

    Article  CAS  Google Scholar 

  24. Fava D, Nie Z, Winnik MA, Kumacheva E (2008) Evolution of self-assembled structures of polymer-terminated gold nanorods in selective solvents. Adv Mater 20:4318–4322

    Article  CAS  Google Scholar 

  25. Xu X, Yi Z, Li X, Wang Y, Geng X, Luo J, Luo B, Yi Y, Tang Y (2012) Discrete dipole approximation simulation of the surface plasmon resonance of core/shell nanostructure and the study of resonance cavity effect. J Phys Chem C 116:24046–24053

    Article  CAS  Google Scholar 

  26. Prodan E, Nordlander P (2003) Structural tunability of the plasmon resonances in metallic nanoshells. Nano Lett 3:543–547

    Article  CAS  Google Scholar 

  27. Alexander KD, Skinner K, Zhang S, Wei H, Lopez R (2010) Tunable SERS in gold nanorod dimers through strain control on an elastomeric substrate. Nano Lett 10:4488–4493

    Article  CAS  Google Scholar 

  28. Kinkhabwala A, Yu ZF, Fan SH, Avlasevich Y, Mullen K, Moerner WE (2009) Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna. Nat Photonics 3:654–657

    Article  CAS  Google Scholar 

  29. Ueno K, Juodkazis S, Mizeikis V, Sasaki K, Misawa H (2008) Clusters of closely spaced gold nanoparticles as a source of two-photon photoluminescence at visible wavelengths. Adv Mater 20:26–30

    Article  CAS  Google Scholar 

  30. Grigorenko AN, Roberts NW, Dickinson MR, Zhang Y (2008) Nanometric optical tweezers based on nanostructured substrates. Nat Photonics 2:365–370

    Article  CAS  Google Scholar 

  31. Draine BT, Flatau PJ (1994) Discrete-dipole approximation for scattering calculations. J Opt Soc Am A 11:1491–1499

    Article  Google Scholar 

  32. Yurkin MA, Hoekstra AG (2007) The discrete dipole approximation: an overview and recent developments. J Quant Spectrosc Radiat Transf 106:558–589

    Article  CAS  Google Scholar 

  33. Draine BT, Flatau PJ http://arXiv.org/abs/1002.1505v1 (accessed 2010)

  34. Draine BT, Flatau PJ (2008) Discrete-dipole approximation for periodic targets: theory and tests. J Opt Soc Am A 25:2693–2703

    Article  Google Scholar 

  35. Zhao J, Pinchuk AO, McMahon JM, Li SZ, Alisman LK, Atkinson AL, Schatz GC (2008) Methods for describing the electromagnetic properties of silver and gold nanoparticles. Acc Chem Res 41:1710–1720

    Article  CAS  Google Scholar 

  36. Purcell EM, Pennypacker CR (1973) Scattering and absorption of light by nonspherical dielectric grains. Astrophys J 186:705–714

    Article  Google Scholar 

  37. Palik ED (1985) Handbook of optical constants of solids. Academic, New York

    Google Scholar 

Download references

Acknowledgments

The work is financially supported by the Fundamental Research Funds for the Central Universities of Central South University (grant no. 2013zzts011), the Open-End Fund for the Valuable and Precision Instruments of Central South University (CSUZC2014024), the National Nature Science Foundation of China (grant no. 11375159), and the Science and Technology Foundation of CAEP (grant no. 2012B0302051)

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Authors and Affiliations

  1. College of Physics and Electronics, Central South University, Changsha, 410083, China

    Xi-bin Xu, Yu-ying Wang, Zao Yi & You-gen Yi

  2. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900, Sichuan, China

    Xi-bin Xu, Jiang-shan Luo, Miao Liu, Yu-ying Wang, Zao Yi, Xi-bo Li & Yong-jian Tang

  3. Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900, Sichuan, China

    Jiang-shan Luo, Miao Liu & Yu-ying Wang

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  1. Xi-bin Xu
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  2. Jiang-shan Luo
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  3. Miao Liu
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  4. Yu-ying Wang
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  5. Zao Yi
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  6. Xi-bo Li
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  7. You-gen Yi
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  8. Yong-jian Tang
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Correspondence to You-gen Yi or Yong-jian Tang.

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Xu, Xb., Luo, Js., Liu, M. et al. Cavity-Induced NIR Tunability in Optical Response and Energy Confinement of Dumbbell-Shaped Au Nanorod. Plasmonics 10, 369–381 (2015). https://doi.org/10.1007/s11468-014-9818-9

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  • DOI: https://doi.org/10.1007/s11468-014-9818-9

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