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Chinese Journal of Lasers, Volume. 48, Issue 22, 2202014(2021)

Theoretical and Experimental Investigations on Photothermal Effect of Gold Nanorods Irradiated by Femtosecond or Nanosecond Laser

Penghui Zhao1, Jing Feng1, Linzhuang Xing1, Dong Li1、*, Bin Chen1, and Dingying Liao2、**
Author Affiliations
  • 1State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
  • 2Department of Ophthalmology, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (17)
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    Figures & Tables(9)
    Shape of gold nano-rod and meshing. (a) Shape; (b) computing region; (c) meshing

    Fig. 1. Shape of gold nano-rod and meshing. (a) Shape; (b) computing region; (c) meshing

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    Comparison between simulated results and reference results

    Fig. 2. Comparison between simulated results and reference results

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    Temperature distributions of gold nano-rod at laser energy density of 0.002 J/cm2. (a) Lattice temperature; (b) electron temperature

    Fig. 3. Temperature distributions of gold nano-rod at laser energy density of 0.002 J/cm2. (a) Lattice temperature; (b) electron temperature

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    Lattice temperature distributions of gold nano-rod under different incident femtosecond laser energies. (a) Along Z axis; (b) along R axis

    Fig. 4. Lattice temperature distributions of gold nano-rod under different incident femtosecond laser energies. (a) Along Z axis; (b) along R axis

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    Temperature distributions of gold nano-rod at laser energy density of 0.8 J/cm2. (a) Lattice temperature; (b) electron temperature

    Fig. 5. Temperature distributions of gold nano-rod at laser energy density of 0.8 J/cm2. (a) Lattice temperature; (b) electron temperature

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    Lattice temperature distributions of gold nano-rod under different incident nanosecond laser energies. (a) Along Z axis; (b) along R axis

    Fig. 6. Lattice temperature distributions of gold nano-rod under different incident nanosecond laser energies. (a) Along Z axis; (b) along R axis

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    TEM images of gold nano-rod irradiated by nanosecond laser with different laser energy densities [14]. (a) 0.64 J/cm2; (b) 0.8 J/cm2; (c) 4 J/cm2; (d) 16.7 J/cm2

    Fig. 7. TEM images of gold nano-rod irradiated by nanosecond laser with different laser energy densities [14]. (a) 0.64 J/cm2; (b) 0.8 J/cm2; (c) 4 J/cm2; (d) 16.7 J/cm2

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    TEM images of gold nano-rod irradiated by femtosecond laser with different laser energy densities [14]. (a) 0.0002 J/cm2; (b) 0.001 J/cm2; (c) 0.56 J/cm2; (d) 10.2 J/cm2

    Fig. 8. TEM images of gold nano-rod irradiated by femtosecond laser with different laser energy densities [14]. (a) 0.0002 J/cm2; (b) 0.001 J/cm2; (c) 0.56 J/cm2; (d) 10.2 J/cm2

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    • Table 1. Thermophysical parameters of water and gold nano-rod

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      Table 1. Thermophysical parameters of water and gold nano-rod

      ParameterValue
      Ce/(J·m-3·K-1)67.6Te
      Cl/(J·m-3·K-1)0.119+(3.061×10-5)Tl
      g /(W·J·m-3·K-1)2.0×1016
      ρgold/(kg·m-3)19300
      kgold/(W·m-1·K-1)320
      Tm/K1337
      ρw/(kg·m-3)1000
      cp,w/(kJ·kg-1·K-1)4.184
      K /(W·m-1·K-1)0.61
      Tcr/K647
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    Penghui Zhao, Jing Feng, Linzhuang Xing, Dong Li, Bin Chen, Dingying Liao. Theoretical and Experimental Investigations on Photothermal Effect of Gold Nanorods Irradiated by Femtosecond or Nanosecond Laser[J]. Chinese Journal of Lasers, 2021, 48(22): 2202014

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    Paper Information

    Category: laser manufacturing

    Received: Mar. 1, 2021

    Accepted: Jun. 18, 2021

    Published Online: Oct. 20, 2021

    The Author Email: Dong Li (lidong@mail.xjtu.edu.cn), Dingying Liao (dingyingliao@163.com)

    DOI:10.3788/CJL202148.2202014

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology