bsuirДоклады БГУИРDoklady BGUIR1729-76482708-0382БГУИР10.35596/1729-7648-2021-19-8-58-62bsuir-3246Research ArticleЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКАELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICSPhotoacoustic effect in micro- and nanostructures: numerical simulations of Lagrange equationsPhotoacoustic effect in micro- and nanostructures: numerical simulations of Lagrange equationsRomanovO. G.RomanovO. G.

Oleg Gennadievich Romanov –  PhD., Assosiate Professor, Head of the Department of Computer Simulations of the Faculty of Physics 

20030, Republic of Belarus, Minsk, Nezavisimosti Ave., 4, Belarusian State University

romanov@bsu.byShtykovYa. K.ShtykovYa. K.

Yakov K. Shtykov –  Postgraduate student at the Faculty of Physics 

Minsk

TimoshchenkoI. A.TimoshchenkoI. A.

Igor A. Timoshchenko –  Senior Lecturer at the Faculty of Physics 

Minsk

Belarusian State UniversityBelarusian State University2021030120221985862Copyright © Romanov O.G., Shtykov Y.K., Timoshchenko I.A., 20222022Romanov O.G., Shtykov Y.K., Timoshchenko I.A.Romanov O.G., Shtykov Y.K., Timoshchenko I.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.bsuir.by/jour/article/view/3246

The  work  provides  the  description  of  theoretical  and  numerical  modeling  techniques of thermomechanical effects that take place in absorbing micro- and nanostructures of different materials under the action of pulsed laser radiation. A proposed technique of the numerical simulation is based on the solution of equations of motion of continuous media in the form of Lagrange for spatially inhomogeneous media. This model allows calculating fields of temperature, pressure, density, and velocity of the medium depending on the parameters of laser pulses and the characteristics of micro- and nanostructures.

The  work  provides  the  description  of  theoretical  and  numerical  modeling  techniques of thermomechanical effects that take place in absorbing micro- and nanostructures of different materials under the action of pulsed laser radiation. A proposed technique of the numerical simulation is based on the solution of equations of motion of continuous media in the form of Lagrange for spatially inhomogeneous media. This model allows calculating fields of temperature, pressure, density, and velocity of the medium depending on the parameters of laser pulses and the characteristics of micro- and nanostructures.

short laser pulsesnanoacousticsLagrange equationsnumerical simulationsReferencesAttia A.B.E., Balasundaram G., Moothanchery M., Dinish U.S., Bi R., Ntziachristos V., Olivo M. A review of clinical photoacoustic imaging: Current and future trends. Photoacoustics. 2019;16:100144. https://doi.org/10.1016/j.pacs.2019.100144Attia A.B.E., Balasundaram G., Moothanchery M., Dinish U.S., Bi R., Ntziachristos V., Olivo M. A review of clinical photoacoustic imaging: Current and future trends. Photoacoustics. 2019;16:100144. https://doi.org/10.1016/j.pacs.2019.100144Dumitras D.C., Petrus M., Bratu A.M., Popa C. Applications of Near Infrared Photoacoustic Spectroscopy for Analysis of Human Respiration: A Review. Molecules. 2020;25(7):1728. http://doi.org/10.3390/ molecules25071728.Dumitras D.C., Petrus M., Bratu A.M., Popa C. Applications of Near Infrared Photoacoustic Spectroscopy for Analysis of Human Respiration: A Review. Molecules. 2020;25(7):1728. http://doi.org/10.3390/ molecules25071728.van Capel P.J.S., Peronne E., Dijkhuis J.I. Nonlinear ultrafast acoustics at the nano scale. Ultrasonics. 2015;56:36-51. https://doi.org/10.1016/j.ultras.2014.09.021.van Capel P.J.S., Peronne E., Dijkhuis J.I. Nonlinear ultrafast acoustics at the nano scale. Ultrasonics. 2015;56:36-51. https://doi.org/10.1016/j.ultras.2014.09.021.Smith R.J., Perez Cota F., Marques L., Chen X., Arca A., Webb K., Aylott J., Somekh M.G., Clark M. Optically excited nanoscale ultrasonic transducers. J. Acoust. Soc. Am. 2015;137:219-227. https://doi.org/10.1121/1.4904487.Smith R.J., Perez Cota F., Marques L., Chen X., Arca A., Webb K., Aylott J., Somekh M.G., Clark M. Optically excited nanoscale ultrasonic transducers. J. Acoust. Soc. Am. 2015;137:219-227. https://doi.org/10.1121/1.4904487.Taruttis A., Ntziachristos V. Advances in real-time multispectral optoacoustic imaging and its applications. Nature Photonics. 2015;9:219-227. https://doi.org/10.1038/nphoton.2015.29.Taruttis A., Ntziachristos V. Advances in real-time multispectral optoacoustic imaging and its applications. Nature Photonics. 2015;9:219-227. https://doi.org/10.1038/nphoton.2015.29.Romanov O.G., Romanov G.S. Thermomechanical effect of ultrashort laser pulses on single-dimension metallic nanostructures. Bulletin of the Russian Academy of Sciences: Physics. 2014;78(12):1299-1302. https://doi.org/10.3103/s1062873814120260.Romanov O.G., Romanov G.S. Thermomechanical effect of ultrashort laser pulses on single-dimension metallic nanostructures. Bulletin of the Russian Academy of Sciences: Physics. 2014;78(12):1299-1302. https://doi.org/10.3103/s1062873814120260.Khokhlov N., Knyazev G., Glavin B., Shtykov Y., Romanov O., Belotelov V. Interaction of surface plasmon polaritons and acoustic waves inside an acoustic cavity. Optics Letters. 2017;42(18):3558-3561. https://doi.org/10.1364/OL.42.003558.Khokhlov N., Knyazev G., Glavin B., Shtykov Y., Romanov O., Belotelov V. Interaction of surface plasmon polaritons and acoustic waves inside an acoustic cavity. Optics Letters. 2017;42(18):3558-3561. https://doi.org/10.1364/OL.42.003558.Richtmayer R.D., Morton K.W. Difference methods for initial-value problems. Interscience publishers a division of John Wiley & Sons; 1967.Richtmayer R.D., Morton K.W. Difference methods for initial-value problems. Interscience publishers a division of John Wiley & Sons; 1967.Zel’dovich Ya.B., Raizer Yu.P. Fizika udarnykh voln i vysokotemperaturnykh gidrodinamicheskikh yavlenii (Physics of Shock Waves and High-Temperature Hydrodynamic Phenomena). Moskow: Nauka; 1966.Zel’dovich Ya.B., Raizer Yu.P. Fizika udarnykh voln i vysokotemperaturnykh gidrodinamicheskikh yavlenii (Physics of Shock Waves and High-Temperature Hydrodynamic Phenomena). Moskow: Nauka; 1966.Anisimov S.I., Imas Ya.A., Romanov G.S., Khodyko Y.V. Deistvie izlucheniya bol’shoi moshchnosti na metally (The Effect of High Power Radiation onto Metals). Moskow: Nauka; 1970.Anisimov S.I., Imas Ya.A., Romanov G.S., Khodyko Y.V. Deistvie izlucheniya bol’shoi moshchnosti na metally (The Effect of High Power Radiation onto Metals). Moskow: Nauka; 1970.Romanov O.G., Zheltov G.I., Romanov G.S. Numerical modeling of thermomechanical processes in absorption of laser radiation in spatially inhomogeneous media. Journal of Engineering Physics and Thermophysics. 2011;84(4):772-780. https://doi.org/10.1007/s10891-011-0533-5.Romanov O.G., Zheltov G.I., Romanov G.S. Numerical modeling of thermomechanical processes in absorption of laser radiation in spatially inhomogeneous media. Journal of Engineering Physics and Thermophysics. 2011;84(4):772-780. https://doi.org/10.1007/s10891-011-0533-5.Golubewa L., Timoshchenko I., Romanov O., Karpicz R., Kulahava T., Rutkauskas D., Shuba M., Dementjev A., Svirko Yu., Kuzhir P. Single-walled carbon nanotubes as a photo-thermo-acoustic cancer theranostic agent: theory and proof of the concept experiment. Scientific Reports. 2020;10:22174. https://doi.org/10.1038/s41598-020-79238-6.Golubewa L., Timoshchenko I., Romanov O., Karpicz R., Kulahava T., Rutkauskas D., Shuba M., Dementjev A., Svirko Yu., Kuzhir P. Single-walled carbon nanotubes as a photo-thermo-acoustic cancer theranostic agent: theory and proof of the concept experiment. Scientific Reports. 2020;10:22174. https://doi.org/10.1038/s41598-020-79238-6.

The authors declare that there are no conflicts of interest present.