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High-voltage droplet dispenser developed
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Eichenberg, Dennis J. |
| Copyright Year | 2001 |
| Description | Various techniques have been applied to deploying individual droplets for many applications, such as the study of the combustion of liquid fuels. Isolated droplet studies are useful in that they allow phenomena to be studied under well-controlled and simplified conditions. A high-voltage droplet dispenser has been developed that is extremely effective in dispensing a wide range of droplets. The dispenser is quite unique in that it utilizes a droplet bias voltage, as well as an ionization pulse, to release the droplet. The droplet is deployed from the end of a needle. A flat-tipped, stainless steel needle attached to a syringe dispenses a known value of liquid that hangs on the needle tip. Somewhat below the droplet is an annular ring electrode. A bias voltage, followed by a voltage pulse, is applied to attract the droplet sufficiently to pull it off the needle. The droplet and needle are oppositely charged relative to the annular electrode. The needle is negatively charged, and the annular ring is positively charged. |
| File Size | 66277 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050199463 |
| Archival Resource Key | ark:/13960/t1hj1gd8n |
| Language | English |
| Publisher Date | 2001-03-01 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Electrodes Electric Potential Combustion High Voltages Dispensers Liquid Fuels Drops Liquids Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
