|Fracture of colloidal single-crystal films fabricated by controlled vertical drying deposition|
|Cao H(曹鹤); Lan D(蓝鼎); Wang YR(王育人); Volinsky AA; Duan L(段俐); Jiang H; Wang YR
|发表期刊||Physical Review E
|摘要||Controlled vertical drying deposition method was used to make high-quality single crystal close-packed colloidal films formed of different radii polystyrene latex spheres on glass substrates coming from a low concentration water suspension (0.1% volume fraction). Regardless of the spheres radii the film thickness was about 6.3 microns. However, cracks destroyed the crystalline film structure during the colloidal film growth. The effect of particle radius (85-215 nm range) on film cracking was systematically studied using in situ optical fracture monitoring. Primary parallel cracks run along the vertical growth direction, later followed by secondary branched cracks in-between the primary cracks due to residual water evaporation. Quantitative theoretical relationship between the cracks spacing and particles radius was derived and shows good agreement with experimental observations. Normalized cracks spacing is related to a reciprocal ratio of the dimensionless particle radius.|
; CRACK PATTERNS
|WOS类目||Physics, Fluids & Plasmas
; Physics, Mathematical
|项目资助者||National Natural Science Foundation of China 
; Chinese Academy of Sciences [KJCX2-YW-L08]
; National Science Foundation [CMMI-0600266]
Cao H,Lan D,Wang YR,et al. Fracture of colloidal single-crystal films fabricated by controlled vertical drying deposition[J]. Physical Review E,2010,82(3):31602.
曹鹤.,蓝鼎.,王育人.,Volinsky AA.,段俐.,...&Wang YR.(2010).Fracture of colloidal single-crystal films fabricated by controlled vertical drying deposition.Physical Review E,82(3),31602.
曹鹤,et al."Fracture of colloidal single-crystal films fabricated by controlled vertical drying deposition".Physical Review E 82.3(2010):31602.