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Three-dimensional Monte Carlo model of the coffee-ring effect in evaporating colloidal droplets

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Three-dimensional Monte Carlo model of the coffee-ring effect in evaporating colloidal droplets
นักวิจัย : Crivoi, A , Duan, Fei
คำค้น : DRNTU::Engineering::Mechanical engineering::Fluid mechanics
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Crivoi, A., & Duan, F. (2014). Three-dimensional Monte Carlo model of the coffee-ring effect in evaporating colloidal droplets. Scientific Reports, 4, 4310-. , 2045-2322 , http://hdl.handle.net/10220/19413 , http://dx.doi.org/10.1038/srep04310
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Scientific reports
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The residual deposits usually left near the contact line after pinned sessile colloidal droplet evaporation are commonly known as a “coffee-ring” effect. However, there were scarce attempts to simulate the effect, and the realistic fully three-dimensional (3D) model is lacking since the complex drying process seems to limit the further investigation. Here we develop a stochastic method to model the particle deposition in evaporating a pinned sessile colloidal droplet. The 3D Monte Carlo model is developed in the spherical-cap-shaped droplet. In the algorithm, the analytical equations of fluid flow are used to calculate the probability distributions for the biased random walk, associated with the drift-diffusion equations. We obtain the 3D coffee-ring structures as the final results of the simulation and analyze the dependence of the ring profile on the particle volumetric concentration and sticking probability.

บรรณานุกรม :
Crivoi, A , Duan, Fei . (2557). Three-dimensional Monte Carlo model of the coffee-ring effect in evaporating colloidal droplets.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Crivoi, A , Duan, Fei . 2557. "Three-dimensional Monte Carlo model of the coffee-ring effect in evaporating colloidal droplets".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Crivoi, A , Duan, Fei . "Three-dimensional Monte Carlo model of the coffee-ring effect in evaporating colloidal droplets."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Crivoi, A , Duan, Fei . Three-dimensional Monte Carlo model of the coffee-ring effect in evaporating colloidal droplets. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.