2023   02   en   p.03-10 Hüseyin Okan Durmuş1,2, Baki Karaböce2 & Mirhasan Yu. Seyidov1,
Investigating the temperature effects of a low-power laser on a tissue-like material using NTC-type thermistor sensors and calculating energies by heat transfer equation


In this study, we aimed to investigate the temperature effects of a low-power laser on a tissue-like material, namely muscle phantom. To do this, we used thermistor temperature sensors to measure the temperature of the material at various points while it was exposed to the laser. We found that the temperature of the material increased with increasing duration of exposure to the laser, however, the maximum temperature increase was 1.7 degrees Celsius for 80 seconds, which is not harmful to tissues. Next, we applied this temperature difference information to the heat transfer equation, a mathematical model that describes how heat is transferred from one body to another. By using the measured temperature difference values and known variable such as the material's specific heat capacity, we were able to calculate the amount of energy per 1 gram produced by laser light at different distances and durations. We found that the maximum energy produced was 8.4 J for 80 s or a fluence of 0.105 J/cm2 per second. This information is important because it can help us understand how the laser's energy is absorbed by the tissue-like material and how it affects the material's properties and structure. It can also provide insight into the potential therapeutic effects of low-level laser therapy, a non-invasive treatment that uses lasers to stimulate healing and reduce pain and inflammation in the body, and for determining appropriate treatment doses for various diseases.

Keywords: Tissue-Like Material, Low Power Laser, Temperature Effects, NTC-Type Thermistor Temperature Sensor, Heat Transfer Equation, Specific Heat Capacity, Energy Calculation.


Received: 29.03.2023


1. Department of Physics, Gebze Technical University, 41400, Kocaeli, Turkey
2. Medical Metrology Laboratory, TUBITAK National Metrology Institute (TUBITAK UME), 41470, Kocaeli, Turkey
E-mail: hokandurmus@gtu.edu.tr, smirhasan@gtu.edu.tr

Graphics and Images


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