Mesoscopic modeling of cancer photothermal therapy using single-walled carbon nanotubes and near infrared radiation: insights through an off-lattice Monte Carlo approach.
Single-walled carbon nanotubes (SWNTs) are promising heating agents in cancer photothermal therapy when under near infrared radiation, yet few efforts have been focused on the quantitative understanding of the photothermal energy conversion in biological systems. In this article, a mesoscopic study that takes into account SWNT morphologies (diameter and aspect ratio) and dispersions (orientation and concentration), as well as thermal boundary resistance, is performed by means of an off-lattice Monte Carlo simulation. Results indicate that SWNTs with orientation perpendicular to the laser, smaller diameter and better dispersion have higher heating efficiency in cancer photothermal therapy. Thermal boundary resistances greatly inhibit thermal energy transfer away from SWNTs, thereby affecting their heating efficiency. Through appropriate interfacial modification around SWNTs, compared to the surrounding healthy tissue, a higher temperature of the cancer cell can be achieved, resulting in more effective cancer photothermal therapy. These findings promise to bridge the gap between macroscopic and microscopic computational studies of cancer photothermal therapy.
Department of Mechanical Engineering, National University of Singapore, 117576, Singapore.
Feng
F
Gong
Zhang
Z
Hongyan
Dimitrios V
DV
Papavassiliou
Khoa
K
Bui
Christina
C
Lim
Hai M
HM
Duong
D003198:Computer Simulation; D006801:Humans; D006979:Hyperthermia, Induced; D007259:Infrared Rays / Q000627:therapeutic use*; D009010:Monte Carlo Method; D037742:Nanotubes, Carbon; D009369:Neoplasms / Q000628:therapy*; D010789:Phototherapy
D037742:Nanotubes, Carbon