Development of Mixing Liquid TEM Holder for In-situ Observing of Self-assembling Co-polymer (PS-b-PDMS)

• Main Authors: Lin, Shi Chi, 林士棊
• Other Authors: Chen, Fu Rong
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/98645939403583146426

碩士 === 國立清華大學 === 工程與系統科學系 === 104 === Advanced techniques with in-situ liquid holder combined with wet cell chips in electron microscopic provide a new territory for us to explore and discover the identifiable scientific issue. The purpose of this research is to develop a mixing liquid holder for TEM with the combination of self-designed flow chips and SAW cells. The results can be shown in four parts. (1) Observed the mixing process of two different color fluorescent polystyrene beads and then calculate the mixing ratio of the two particles to get the ideal flow rate of the two liquid channels. (2) Observed the precipitation of calcium carbonate by injecting calcareous water and sodium bicarbonate liquid at the same time to ensure the usable of the mixing liquid holder. (3) In-situ observing phase transformation of polystyrene-block-polydimethylsiloxane (PS-b-PDMS) treated with toluene solvent vapor annealing process. (4) Developed heating and liquid holder and applied to PS-b-PDMS. These results show that self-designed mixing liquid holder with the combination of self-designed flow chips successfully observe the chemical precipitation of calcium carbonate and phase transformation of PS-b-PDMS. This holder is the linking of in-situ observing technique and the advance material research.