Open AccessTemperature oscillations during photoinduced heating of aqueous suspensions of silicon nanoparticles
Author(s) -
V. S. Belov,
E A Bobkov,
Vladislav Oleschenko,
Andrei V. Kabashin,
V. Yu. Timoshenko
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2058/1/012032
Subject(s) - overheating (electricity) , materials science , aqueous suspension , irradiation , boiling point , aqueous solution , nanoparticle , boiling , suspension (topology) , silicon , laser , nanosecond , chemical physics , chemical engineering , nanotechnology , optoelectronics , optics , chemistry , mathematics , homotopy , nuclear physics , pure mathematics , engineering , physics , organic chemistry , quantum mechanics
Temperature oscillations (pulsations) were detected in aqueous suspensions of silicon (Si) nanoparticles NPs under laser irradiation with highly absorbed light. The temperature pulsation frequency was found to depend on the NPs concentration in suspension and laser irradiation power. The observed phenomenon is assumed to be caused by the local overheating of Si NPs close to the boiling point of water, while the average heating of the surrounding liquid was insignificant. The observed phenomenon is discussed in view of potential applications in local photo-induced hyperthermia of cancer.