[17a-M_110-1~13] 3.4 Laser system and materials

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)

[17a-M_110-11] Proposal for a General Nanoemulsion Method Incorporating Dynamic Viscosity Control

Riku Matsuzaki¹, JunFeng Zhu², 〇Yuji Oki^1,3 (1.Kyushu Unic., 2.HyDio LLC., 3.SOPT LLC.)

Keywords:

Transparent Porous Material,PDMS,Quantum Dot

We propose a general nanoemulsion generation method that incorporates dynamic viscosity control to overcome limitations in particle size reduction under static conditions. The technique involves mixing two immiscible liquid phases and applying shear forces such as planetary stirring and ultrasonic cavitation to achieve fine emulsification. By introducing a volatile organic solvent, viscosity is temporarily lowered during shear processing and subsequently increased as the solvent evaporates, preventing rapid recoalescence of dispersed droplets. This approach, termed evaporation-driven dynamic viscosity control (ED-DVC), enables efficient stabilization of nanoemulsion structures prior to matrix solidification. Experimental validation using polydimethylsiloxane (PDMS) demonstrated a significant increase in nanopore fraction from approximately 41% to 56%. Furthermore, application to quantum dot dispersions achieved over 90% retention of optical activity, highlighting the versatility of this method for fabricating porous materials and functional composites.