Nano-rheology engineering using in-air micro-droplet technology

使用空气微滴技术的纳米流变工程

基本信息

批准号：
19360039
负责人：
SAKAI Keiji
金额：
$ 11.81万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2007
资助国家：
日本
起止时间：
2007 至 2009
项目状态：
已结题

项目摘要

Soft condensed materials, such as liquid crystal, gel, micelle and bio systems are characterized by its organized micro-structures, which is formed in a self assembling manner. These materials are also featured by its strong response to the outer stimulation such as the change of temperature and pressure, shear deformation, and the application of the electric/magnetic field. Recently, many investigations have been carried out to realize the fabrication of soft integrated devices by using the above soft condensed materials. The purpose of this study is to establish the nano-rheoloy engineering technique which observes the dynamic process of micro fluid droplet formed and undergoing various phase transition in the air. In the study, we developed a new technique to observe the pico-litter chemical reaction through the microscopic and high speed observation of the collision of micro particles. We succeeded in explaining the proceeding of the chemical reaction in terms of the diffusion of molecules in small chemical reactors.We have also developed a new technique to fabricate a series of liquid particle with high reputation rate of 500,000 shots per our by using the spontaneous growth of the fluctuation in diameter in the one dimensional fluid system : a liquid jet continuously generated from a thin nozzle is modulated in its diameter by a piezo-driver. By observing the break-up phenomena of the fluid jet, we could successfully show that evolution in the shape of the jet provides us of the dynamic mechanical properties of the aqueous solution, such as surface tension and visco-elasticity. In conclusion, the technique developed by us in this project would be powerful tools to investigate the nanoscopic fluid physics.

软凝的材料，例如液晶，凝胶，胶束和生物系统的特征是其有组织的微结构，以自组装方式形成。这些材料还具有对外部刺激的强烈反应，例如温度和压力的变化，剪切变形以及电气/磁场的应用。最近，已经进行了许多研究，以使用上述软凝结材料来实现软集成设备的制造。这项研究的目的是建立纳米 - 红色工程技术，该技术观察到形成的微流体液滴的动态过程，并在空气中进行各种相变。在这项研究中，我们开发了一种新技术，通过微观和高速观察微粒的碰撞观察Pico-Litter化学反应。我们成功地说明了分子在小型化学反应堆中的扩散来解释化学反应的诉讼。我们还开发了一种新技术，通过使用自发生长，我们制造了一系列的液体颗粒，高声誉速率为500,000张。一维流体系统中直径波动的波动：由压电驱动器调节了从薄喷嘴连续产生的液体射流。通过观察流体射流的分裂现象，我们可以成功地表明，射流形状的进化为我们提供了水溶液的动态机械性能，例如表面张力和粘弹性。总之，我们在该项目中开发的技术将是研究纳米玻璃体物理学的强大工具。