Лазерний нагрів біметалевих наночастинок, які застосовуються в медицині

• Datum: 2016
• Hauptverfasser: Lerman, L. B., Porodko, L. V.
• Format: Artikel
• Sprache: Russisch
• Veröffentlicht: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2016
• Schlagworte: лазерний нагрів; біметалеві наночастинки; електростатична енергія; теплопровідність; рівняння Пуассона
• Online Zugang: https://www.cpts.com.ua/index.php/cpts/article/view/381
• Назва журналу: Chemistry, Physics and Technology of Surface

In this paper, we present a theoretical analysis of heating spherical bimetallic nanoparticles with a silver core and a golden shell using laser radiation. The aim of the work is to prove a possibility for applying laser hyperthermia in oncology with use of these nanoparticles. At this, a power and distribution of heat sources in a nanoparticle should be found with subsequent estimation of the temperature in its environs.  We investigated a spatial distribution of the field energy in a particle within the electrostatic approximation for homogeneous field acting along the sphere axis. In this case electrostatic energy keeps a stable value in the core but corresponding expression for the shell consists of two terms of the series in expansion on Legendre polynomials. We have constructed a solution of the heat transfer equation for a sphere in a capsule with internal heat sources which intensity is formed by energy distribution of the electrical field. The calculations made show that the temperature necessary for destruction of onco-cells in the nearest environment of the particle can be reached using the laser power that is safe enough for a body system.