Symposium 1: Functional Metastructures and Nanomaterials: Properties, Fabrication and Modeling I
11:00 Invited talk : Thermoplasmonic assisted hydrodynamics. From microbubble formation to fluid convection
Institut Fresnel (France) This presentation focuses on the physics of microscale thermo-induced processes in liquids assisted by plasmonic heating. In particular, focus will be put on recent results regarding bubble formation, fluid superheating and strong fluid convection induced by gold nanoparticles under cw illumination.
11:20 Invited talk : Thermoplasmonic control of chemical reactions and cell function at the nanoscale
LMU Munich, Department of Physics (Germany) Plasmonic nanoparticles feature intriguing optical properties that can be utilized to manipulate them by means of light. Light absorbed by gold particles, for example, is very efficiently converted into heat. A single particle can thus be used as a fine tool to apply heat to a nanoscopic area. At the same time, gold nanoparticles are subject to optical forces when they are irradiated with a laser beam which renders it possible to optically manipulate them in two-and three dimensions.
11:40 Invited talk : Optical Probe Thermometry Using a Laser Trapped Erbium Oxide Nanoparticle
Samual C. Johnson, Susil Baral, Arwa A. Alaulamie, Hugh H. Richardson
Ohio University (USA) In this talk I will describe a new optical probe technique using a laser trapped erbium oxide nanoparticle that measures absolute temperature below the diffraction limit. We use this new technique to measure the temperature where vapor nucleation occurs in degassed water for a nanoheater limited in size by the profile of the excitation laser.
12:00 Invited talk : Vapor Formation and Bubble Dynamics around Strongly Heated Nanoparticles
Pawel Keblinski, Kiran Sasikumar
Rensselaer Polytechnic Institute (USA) We use molecular dynamics simulations to investigate the cavitation dynamics around pulse heated solid nanoparticles immersed in a fluid. We determine the criterion for formation of the vapor nanocavity and study the temporal evolution of vapor nanobubbles. MD simulations of 8 nm diameter gold nanoparticles in water reveals that vapor formation is not observed, even if the gold melts. Further increase of the heating power leads to the fragmentation of the gold particle.
12:20 Invited talk : Thermomechanical Dynamics in Plasmonic Nanofluids
J. L. Dominguez Juarez, S. Vallone, M. Moocarme, A. Lempel, H. D. Gafney, Luat Vuong
Queens College of CUNY (USA) We describe the first experiments of spontaneous oscillatory behavior in binary-solvent plasmonically-absorbing nanofluids, which occurs when collimated light grazes menisci. We characterize self-focusing dynamics that occur in non-local materials, solvent dynamics, new mechanisms for probing nanoparticle-solvent chemistry, and novel thermo-mechanical dynamics.