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Title: Universal fluid droplet ejector

Abstract

A droplet generator comprises a fluid reservoir having a side wall made of glass or quartz, and an end cap made from a silicon plate. The end cap contains a micromachined aperture through which the fluid is ejected. The side wall is thermally fused to the end cap, and no adhesive is necessary. This means that the fluid only comes into contact with the side wall and the end cap, both of which are chemically inert. Amplitudes of drive pulses received by reservoir determine the horizontal displacements of droplets relative to the ejection aperture. The drive pulses are varied such that the dropper generates a two-dimensional array of vertically-falling droplets. Vertical and horizontal inter-droplet spacings may be varied in real time. Applications include droplet analysis experiments such as Millikan fractional charge searches and aerosol characterization, as well as material deposition applications. 8 figs.

Inventors:
;
Issue Date:
Research Org.:
Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
678550
Patent Number(s):
5,943,075
Application Number:
PAN: 8-958,476
Assignee:
Leland Stanford Junior Univ., Stanford, CA (United States) PTO; SCA: 420200; PA: EDB-99:085536; SN: 99002124492
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 24 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; AEROSOL GENERATORS; DESIGN; NOZZLES; DROPLETS; SPATIAL DISTRIBUTION; USES

Citation Formats

Lee, E.R., and Perl, M.L. Universal fluid droplet ejector. United States: N. p., 1999. Web.
Lee, E.R., & Perl, M.L. Universal fluid droplet ejector. United States.
Lee, E.R., and Perl, M.L. Tue . "Universal fluid droplet ejector". United States.
@article{osti_678550,
title = {Universal fluid droplet ejector},
author = {Lee, E.R. and Perl, M.L.},
abstractNote = {A droplet generator comprises a fluid reservoir having a side wall made of glass or quartz, and an end cap made from a silicon plate. The end cap contains a micromachined aperture through which the fluid is ejected. The side wall is thermally fused to the end cap, and no adhesive is necessary. This means that the fluid only comes into contact with the side wall and the end cap, both of which are chemically inert. Amplitudes of drive pulses received by reservoir determine the horizontal displacements of droplets relative to the ejection aperture. The drive pulses are varied such that the dropper generates a two-dimensional array of vertically-falling droplets. Vertical and horizontal inter-droplet spacings may be varied in real time. Applications include droplet analysis experiments such as Millikan fractional charge searches and aerosol characterization, as well as material deposition applications. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}