Deposit pattern of inkjet printed Pico-liter droplet

Taewo Ong Lim; Jungkeun Yang; Seungmi Lee; Jaewon Chung; Daehie Hong

doi:10.1007/s12541-012-0108-1

Deposit pattern of inkjet printed Pico-liter droplet

Taewo Ong Lim, Jungkeun Yang, Seungmi Lee, Jaewon Chung, Daehie Hong

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The deposit pattern of an evaporating picoliter droplet is studied changing the solvents (water, diethylene glycol, and formamide), mixing composition of the solvents and substrate temperature. When depinning occurs in the early stage of the evaporation period, concentrated solute (or partially deposited solute, if any) also retracts with the receding droplet, resulting in dome shaped deposit patterns. When pinning is maintained during most of the evaporation period, either a ring deposit or a relatively uniform deposit is obtained depending on the type of solvent and heating condition. These results are explained by interplay of (1) radial outward flow due to the strong evaporation flux at the contact line of a sessile droplet, (2) inward Marangoni flow due to evaporative cooling and solvent concentration gradient, and (3) solute mixing by diffusion in liquid.

Original language	English
Pages (from-to)	827-833
Number of pages	7
Journal	International Journal of Precision Engineering and Manufacturing
Volume	13
Issue number	6
DOIs	https://doi.org/10.1007/s12541-012-0108-1
Publication status	Published - 2012 Jun

Keywords

Coffee Ring
Deposit
Diffusion
Evaporation
Inkjet Printing
Marangoni Flow
Pico-liter Droplet
Solute

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1007/s12541-012-0108-1

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title = "Deposit pattern of inkjet printed Pico-liter droplet",

abstract = "The deposit pattern of an evaporating picoliter droplet is studied changing the solvents (water, diethylene glycol, and formamide), mixing composition of the solvents and substrate temperature. When depinning occurs in the early stage of the evaporation period, concentrated solute (or partially deposited solute, if any) also retracts with the receding droplet, resulting in dome shaped deposit patterns. When pinning is maintained during most of the evaporation period, either a ring deposit or a relatively uniform deposit is obtained depending on the type of solvent and heating condition. These results are explained by interplay of (1) radial outward flow due to the strong evaporation flux at the contact line of a sessile droplet, (2) inward Marangoni flow due to evaporative cooling and solvent concentration gradient, and (3) solute mixing by diffusion in liquid.",

keywords = "Coffee Ring, Deposit, Diffusion, Evaporation, Inkjet Printing, Marangoni Flow, Pico-liter Droplet, Solute",

author = "Lim, {Taewo Ong} and Jungkeun Yang and Seungmi Lee and Jaewon Chung and Daehie Hong",

note = "Funding Information: This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD, Basic Research Promotion Fund, KRF-2008-314-D00038) and Korea University.",

year = "2012",

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doi = "10.1007/s12541-012-0108-1",

language = "English",

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journal = "International Journal of Precision Engineering and Manufacturing",

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AU - Lim, Taewo Ong

AU - Yang, Jungkeun

AU - Lee, Seungmi

AU - Chung, Jaewon

AU - Hong, Daehie

N1 - Funding Information: This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD, Basic Research Promotion Fund, KRF-2008-314-D00038) and Korea University.

PY - 2012/6

Y1 - 2012/6

N2 - The deposit pattern of an evaporating picoliter droplet is studied changing the solvents (water, diethylene glycol, and formamide), mixing composition of the solvents and substrate temperature. When depinning occurs in the early stage of the evaporation period, concentrated solute (or partially deposited solute, if any) also retracts with the receding droplet, resulting in dome shaped deposit patterns. When pinning is maintained during most of the evaporation period, either a ring deposit or a relatively uniform deposit is obtained depending on the type of solvent and heating condition. These results are explained by interplay of (1) radial outward flow due to the strong evaporation flux at the contact line of a sessile droplet, (2) inward Marangoni flow due to evaporative cooling and solvent concentration gradient, and (3) solute mixing by diffusion in liquid.

AB - The deposit pattern of an evaporating picoliter droplet is studied changing the solvents (water, diethylene glycol, and formamide), mixing composition of the solvents and substrate temperature. When depinning occurs in the early stage of the evaporation period, concentrated solute (or partially deposited solute, if any) also retracts with the receding droplet, resulting in dome shaped deposit patterns. When pinning is maintained during most of the evaporation period, either a ring deposit or a relatively uniform deposit is obtained depending on the type of solvent and heating condition. These results are explained by interplay of (1) radial outward flow due to the strong evaporation flux at the contact line of a sessile droplet, (2) inward Marangoni flow due to evaporative cooling and solvent concentration gradient, and (3) solute mixing by diffusion in liquid.

KW - Coffee Ring

KW - Deposit

KW - Diffusion

KW - Evaporation

KW - Inkjet Printing

KW - Marangoni Flow

KW - Pico-liter Droplet

KW - Solute

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DO - 10.1007/s12541-012-0108-1

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SN - 1229-8557

VL - 13

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EP - 833

JO - International Journal of Precision Engineering and Manufacturing

JF - International Journal of Precision Engineering and Manufacturing

IS - 6

ER -

Deposit pattern of inkjet printed Pico-liter droplet

Abstract

Keywords

ASJC Scopus subject areas

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