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):
- 5943075
- Application Number:
- PAN: 8-958,476
- Assignee:
- Leland Stanford Junior Univ., Stanford, CA (United States)
- 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}
}