Surface Analytical Analysis of Atmospheric Reactions on Sessile Droplets

在项目的第二年，取得了以下进展和成果：1。设计并实现了一种先进的实验装置，用于在QELS测量期间控制固着液滴所暴露的气氛（监测其表面张力）。将该装置与现有的固着液滴表面张力测量装置相结合。上述技术/实验设置是独特的，并允许产生新的和有见地的实验数据。监测了微米级固着液滴在大气表面活性剂作用下的表面张力变化趋势，揭示了表面张力变化规律的新实验数据.该项目迄今为止获得的数据于2023年3月28日在美国印第安纳波利斯举行的ACS春季会议上公布。专题介绍的题目是“利用准弹性激光散射技术监测暴露于疏水有机化合物的单一气溶胶和固着液滴的表面张力”，作者如下：Derrick Mott、卡洛斯Baptista、Yize Zhang、Jason Nyoto、Atika努尔Rochmah、Masao Gen、Mao Fukuyama和Akihide Hibara。该项目已经帮助了许多学生的教育，演讲本身也受到了与会者的好评。大气科学领域的专家讨论了结果，并提供了反馈意见和今后的实验方向。

In the second year of the project the following progress and accomplishments were made:1. An advanced experimental apparatus was designed and implemented for controlling the atmosphere that sessile droplets are exposed to during QELS measurement (monitoring of their surface tension). This setup was incorporated to the current experimental setup for measuring surface tension of sessile droplets.2. The technique/experimental setup described above is unique and has allowed the generation of new and insightful experimental data. The trend in surface tension value of micrometer sized sessile drops was monitored during exposure to atmospheric surfactants, revealing new experimental data on how surface tension can be affected.3. The data that has been obtained so far in the project was presented at the Spring Meeting of the ACS at Indianapolis USA on March 28, 2023. The title of the presentation was "Surface tension monitoring of single aerosol and sessile droplets exposed to hydrophobic organic compounds using the quasi-elastic laser scattering technique", with the following authors "Derrick Mott, Carlos Baptista, Yize Zhang, Jason Nyoto, Atika Nur Rochmah, Masao Gen, Mao Fukuyama and Akihide Hibara". The project has already aided in the education of many students and the presentation itself was well received by attendees. Experts in the field of atmospheric science were able to discuss the results and provide feedback and future experimental direction.