Objective:Laser-inducedCoulombexplosionofgoldnanoparticlesforbreastcancerhasbeenstudiedbynanophotolysistechnique.Thisstudyaimedtoinvestigatewhetherlaser-inducedbubbleformationduetoCoulombexplosioncanprovideaneffectiveapproachforselectivedamageofbreastcancerwithgoldnanoparticles.Method:Numericalmethodinvolveslaser-inducedCoulombexplosionofgoldnanoparticles.Differentparametersrelatedtonanophotolysissuchaslaserfluence,tumordepth,clusterradius,laserpulseduration,andbubbleformationisstudiednumerically.NumericalsimulationwasperformedusingMatlab.Results:Thegoldnanoparticlesof10,20,30,40,and50nminradiuscouldpenetrateintotumor1.14,1.155,1.189,1.20and1.22cmindepthrespectively.Themaximumpenetrationdepthintumorcouldbeobtainedwithnanoparticlesof50nmradius.Shortlaserpulseof40nswithnanoparticlesof10nmradiuscouldpenetrateintotumor1.14cmindepth.Bubbleswitharadiusof9μmcouldeffectivelykillbreastcancercellswithoutdamaginghealthyones.Thebubbleradiusincreasedfrom4to9μmwithanincreaseinpulsedurationintherangeof10to30ns.Conclusions:Goldnanoparticleswithincreasingradiusandbubbleformationforselectivedamageofbreastcancercellsaresuccessfullyprobed.Thepresentcalculatedresultsarecomparedwithotherexperimentalfindings,andgoodcorrelationisfoundbetweenthepresentworkandpreviousexperimentalvalues.Itwasdemonstratedthatbubbleformationintumormayfurtherincreasetheefficacyofbreastcancertreatment.
