| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
|
|---|
| Outline of Final Research Achievements |
When nano-particle suspension films dry at too high a speed, the particles are trapped at the air-liquid interface to form a particle consolidation layer at the top surface. However, little attention has been paid to the drying of bimodal suspensions. This study aims at developing a new, in-situ measurement technique to capture the surface segregation of smaller particles in bimodal suspension films by means of fluorescence microscopy. The predictive model was newly built to predict the local particle volume fractions as a function of drying time. The results revealed that the measured emission intensity from the fluorescent nanoparticles well agreed with the model prediction. The increase in emission intensity was observed in two steps at different drying times. The secondary rise in emission intensity was attributed to the flow-induced transport of smaller particles through pore spaces between neighboring large particles.
|
