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Title: Method and apparatus for producing drops using a drop-on-demand dispenser

Abstract

A method and apparatus for dispensing fluid from a drop-on-demand (DOD) fluid dispenser. The method involves withdrawing fluid in the dispenser for a first duration of time, followed by a second duration of time during which the fluid is propelled toward the orifice of the dispenser. Following the period during which the fluid is propelled, there is a second withdrawing of the fluid into the dispenser. The duration of the propelling period is shorter than the duration of either the first withdrawing or the second withdrawing. The propelling of the fluid results in the extension of a small tongue of fluid from the meniscus of the fluid. The second withdrawing of the fluid results in a retraction of the meniscus into the passageway such that only the small tongue of fluid separates and is ejected from the dispenser.

Inventors:
 [1];  [1]
  1. (West Lafayette, IN)
Issue Date:
Research Org.:
Purdue Research Foundation (West Lafayette, IN)
OSTI Identifier:
875015
Patent Number(s):
6513894
Assignee:
Purdue Research Foundation (West Lafayette, IN) CHO
DOE Contract Number:  
FG02-96ER14641
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; producing; drops; drop-on-demand; dispenser; dispensing; fluid; dod; involves; withdrawing; duration; time; followed; propelled; orifice; following; period; propelling; shorter; results; extension; tongue; meniscus; retraction; passageway; separates; ejected; /347/

Citation Formats

Chen, Alvin U., and Basaran, Osman A. Method and apparatus for producing drops using a drop-on-demand dispenser. United States: N. p., 2003. Web.
Chen, Alvin U., & Basaran, Osman A. Method and apparatus for producing drops using a drop-on-demand dispenser. United States.
Chen, Alvin U., and Basaran, Osman A. Wed . "Method and apparatus for producing drops using a drop-on-demand dispenser". United States. https://www.osti.gov/servlets/purl/875015.
@article{osti_875015,
title = {Method and apparatus for producing drops using a drop-on-demand dispenser},
author = {Chen, Alvin U. and Basaran, Osman A.},
abstractNote = {A method and apparatus for dispensing fluid from a drop-on-demand (DOD) fluid dispenser. The method involves withdrawing fluid in the dispenser for a first duration of time, followed by a second duration of time during which the fluid is propelled toward the orifice of the dispenser. Following the period during which the fluid is propelled, there is a second withdrawing of the fluid into the dispenser. The duration of the propelling period is shorter than the duration of either the first withdrawing or the second withdrawing. The propelling of the fluid results in the extension of a small tongue of fluid from the meniscus of the fluid. The second withdrawing of the fluid results in a retraction of the meniscus into the passageway such that only the small tongue of fluid separates and is ejected from the dispenser.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

Patent:

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