| Content Provider | MDPI |
|---|---|
| Author | Lass, Nils Riegger, Lutz Zengerle, Roland Koltay, Peter |
| Abstract | We present a novel pneumatic actuation system for generation of liquid metal droplets according to the so-called StarJet method. In contrast to our previous work, the performance of the device has been significantly improved: the maximum droplet generation frequency in continuous mode has been increased to fmax = 11 kHz (formerly fmax = 4 kHz). In addition, the droplet diameter has been reduced to 60 μm. Therefore, a new fabrication process for the silicon nozzle chips has been developed enabling the production of smaller nozzle chips with higher surface quality. The size of the metal reservoir has been increased to hold up to 22 mL liquid metal and the performance and durability of the actuator has been improved by using stainless steel and a second pneumatic connection to control the sheath flow. Experimental results are presented regarding the characterization of the droplet generation, as well as printed metal structures. |
| File Size | 2025472 |
| Ending Page | 66 |
| Page Count | 18 |
| Starting Page | 49 |
| File Format | |
| e-ISSN | 2072666X |
| DOI | 10.3390/mi4010049 |
| Journal | Micromachines |
| Issue Number | 1 |
| Volume Number | 4 |
| Language | English |
| Publisher Date | 2013-03-11 |
| Access Restriction | Open |
| Subject Keyword | StarJet metal droplets 3D-printing rapid prototyping droplet generator microparticle soldering bumping |
| Content Type | Text |
| Resource Type | Article |
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