List of Articles Rasoul Malekfar

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  1 - Fluence and wavelength optimization of pulsed laser in photothermal therapy
  Rasoul Malekfar Neda Amjadi
  10.30495/ijbbe.2024.2003311.1038
  The ability of Plasmonic nanoparticles (PNPs) to efficiently convert absorbed light energy into localized heat has made them a popular choice for photothermal medical applications. However, during the photothermal process, the diffusion of localized heat can lead to tem More

  The ability of Plasmonic nanoparticles (PNPs) to efficiently convert absorbed light energy into localized heat has made them a popular choice for photothermal medical applications. However, during the photothermal process, the diffusion of localized heat can lead to temperature management challenges. To address this issue, researchers have developed a new generation of PNPs incorporating optical phase transition materials, allowing for tunable photothermal responses without altering the geometry. This tunability is achieved through rapid changes in optical and thermal properties during phase transitions. In this study, we conducted a numerical analysis on the photothermal response of a VO2@Au smart nanoshell in both tumor and healthy liver tissue under irradiation with a nanosecond (5 ns) pulsed laser. To obtain the temperature profile, we solved a coupling problem between electromagnetism and thermodynamics. Manuscript profile
• Open Access Article
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  2 - The liquid environment effect on photoluminescence properties of carbon nanoparticles prepared by laser ablation method in liquids with possible biocompatibility applications
  Rasoul Malekfar Samad Moemen Bellah Fatemeh Kazemizadeh
  10.30495/ijbbe.2023.703605
  Fluorescent carbon nanoparticles (CNPs) were prepared by nanosecond laser ablation of graphite powder in liquid. The effect of the liquid medium on photoluminescence (PL) efficiency and wavelength range were studied experimentally. Four solvents, polyethylene glycol, di More

  Fluorescent carbon nanoparticles (CNPs) were prepared by nanosecond laser ablation of graphite powder in liquid. The effect of the liquid medium on photoluminescence (PL) efficiency and wavelength range were studied experimentally. Four solvents, polyethylene glycol, diethanolamine, diethylamine, and ethylenediamine were used as liquid platforms in the synthesis process. Analyzing the chemical components and optical spectral characterization of CNPs was carried out by attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy and photoluminescence (PL) spectroscopy, respectively. Moreover, the size of CNPs was estimated by using dynamic light scattering (DLS) measurements. Liquid components are determined to be a key factor affecting PL properties and nanoparticle size. The results are valuable in practical applications. Manuscript profile