Temporally-resolved inkjet drop impaction on surfaces

Hongming Dong; Wallace W. Carr; David G. Bucknall; Jeffrey F. Morris

doi:10.1002/aic.11283

Temporally-resolved inkjet drop impaction on surfaces

Hongming Dong, Wallace W. Carr^*, David G. Bucknall, Jeffrey F. Morris

^*Corresponding author for this work

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

102 Citations (Scopus)

Abstract

Impaction on smooth solid substrates of drops formed by the drop-on-demand (DOD) method was investigated over a wide range of impaction speeds (U-0 = 2.21-12.2 m/s), surface contact angles (theta = 6-107 degrees), and drop diameters (D-0 = 40.8-50.5 mu m). The experimental results were compared with several existing equations for predicting maximum spreading. The dimensionless time to reach maximum spreading ratio, scaled by D-0/U-0, ranged from 0.6 to 2.99, depending on Weber number and contact angle. Micron and millimeter drop impactions were compared, and the results indicate that scaling based on three dimensionless numbers (We, Re or Oh, and cos 0) is valid, but spreading ratios of millimeter drops are usually slightly larger during the whole process. The difference is ascribed mainly to the effect of gravity. (c) 2007 American Institute of Chemical Engineers.

Original language	English
Pages (from-to)	2606-2617
Number of pages	12
Journal	AIChE Journal
Volume	53
Issue number	10
DOIs	https://doi.org/10.1002/aic.11283
Publication status	Published - Oct 2007

Keywords

drop impaction
inkjet printing
micron drop
SOLID-SURFACE
LIQUID DROPLETS
FLAT SURFACES
DYNAMICS
SOLIDIFICATION
DEPOSITION

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10.1002/aic.11283

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title = "Temporally-resolved inkjet drop impaction on surfaces",

abstract = "Impaction on smooth solid substrates of drops formed by the drop-on-demand (DOD) method was investigated over a wide range of impaction speeds (U-0 = 2.21-12.2 m/s), surface contact angles (theta = 6-107 degrees), and drop diameters (D-0 = 40.8-50.5 mu m). The experimental results were compared with several existing equations for predicting maximum spreading. The dimensionless time to reach maximum spreading ratio, scaled by D-0/U-0, ranged from 0.6 to 2.99, depending on Weber number and contact angle. Micron and millimeter drop impactions were compared, and the results indicate that scaling based on three dimensionless numbers (We, Re or Oh, and cos 0) is valid, but spreading ratios of millimeter drops are usually slightly larger during the whole process. The difference is ascribed mainly to the effect of gravity. (c) 2007 American Institute of Chemical Engineers.",

keywords = "drop impaction, inkjet printing, micron drop, SOLID-SURFACE, LIQUID DROPLETS, FLAT SURFACES, DYNAMICS, SOLIDIFICATION, DEPOSITION",

author = "Hongming Dong and Carr, {Wallace W.} and Bucknall, {David G.} and Morris, {Jeffrey F.}",

year = "2007",

month = oct,

doi = "10.1002/aic.11283",

language = "English",

volume = "53",

pages = "2606--2617",

journal = "AIChE Journal",

issn = "0001-1541",

publisher = "American Institute of Chemical Engineers",

number = "10",

}

TY - JOUR

T1 - Temporally-resolved inkjet drop impaction on surfaces

AU - Dong, Hongming

AU - Carr, Wallace W.

AU - Bucknall, David G.

AU - Morris, Jeffrey F.

PY - 2007/10

Y1 - 2007/10

N2 - Impaction on smooth solid substrates of drops formed by the drop-on-demand (DOD) method was investigated over a wide range of impaction speeds (U-0 = 2.21-12.2 m/s), surface contact angles (theta = 6-107 degrees), and drop diameters (D-0 = 40.8-50.5 mu m). The experimental results were compared with several existing equations for predicting maximum spreading. The dimensionless time to reach maximum spreading ratio, scaled by D-0/U-0, ranged from 0.6 to 2.99, depending on Weber number and contact angle. Micron and millimeter drop impactions were compared, and the results indicate that scaling based on three dimensionless numbers (We, Re or Oh, and cos 0) is valid, but spreading ratios of millimeter drops are usually slightly larger during the whole process. The difference is ascribed mainly to the effect of gravity. (c) 2007 American Institute of Chemical Engineers.

AB - Impaction on smooth solid substrates of drops formed by the drop-on-demand (DOD) method was investigated over a wide range of impaction speeds (U-0 = 2.21-12.2 m/s), surface contact angles (theta = 6-107 degrees), and drop diameters (D-0 = 40.8-50.5 mu m). The experimental results were compared with several existing equations for predicting maximum spreading. The dimensionless time to reach maximum spreading ratio, scaled by D-0/U-0, ranged from 0.6 to 2.99, depending on Weber number and contact angle. Micron and millimeter drop impactions were compared, and the results indicate that scaling based on three dimensionless numbers (We, Re or Oh, and cos 0) is valid, but spreading ratios of millimeter drops are usually slightly larger during the whole process. The difference is ascribed mainly to the effect of gravity. (c) 2007 American Institute of Chemical Engineers.

KW - drop impaction

KW - inkjet printing

KW - micron drop

KW - SOLID-SURFACE

KW - LIQUID DROPLETS

KW - FLAT SURFACES

KW - DYNAMICS

KW - SOLIDIFICATION

KW - DEPOSITION

U2 - 10.1002/aic.11283

DO - 10.1002/aic.11283

M3 - Article

SN - 0001-1541

VL - 53

SP - 2606

EP - 2617

JO - AIChE Journal

JF - AIChE Journal

IS - 10

ER -

Temporally-resolved inkjet drop impaction on surfaces

Abstract

Keywords

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