Viscosity Effect on Piezoelectric Actuated Nozzle in Generating Micro Droplet

Abstract:

nkjet printing has proven to be a promising and flexible process methodology for low cost and drop-on-demand pattern formation in small-scale devices with a functional material. In this paper, micro droplet deposition using 80 micron diameter nozzle with micro piezoelectric printhead was investigated using a mixture of three fluids, distilled water (DW) and solutions of two different percentage of glycerine (G) as an operating fluids. The droplet formation capability and stability was studied according to the influence of pulse amplitude, dwell time and fluid viscosity. The results show that the optimal drop velocity to obtain a stable printing range from 0.5 ~1.5 ms^-1 which corresponds to pulse amplitude range of 25 to 100V and dwell time 15 to 35 μs. Respectively droplet formation and dispensing performance give benefit in dispensing application and build a solid background to inkjeting functional polymer material.

• Periodical: Advanced Materials Research (Volume 626)
• Pages: 415-419
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.626.415
• Online since: December 2012
• Authors: Ibrahim Raman, M. Syafiq, N. Sa’ude, Mustaffa Ibrahim, Wahab Saidin
• Keywords: Amplitude Voltage, Droplet Generation, Droplet Velocity, Inkjet Printing, Viscosity

References

[1] Self RG, Wallace DB Method of drop size modulation with extended transition time waveform. US Patent 6029896, (2000).

[2] Bogy D, Talke F Experimental and theoretical study of wave propagation phenomena in drop-on-demand inkjet devices. IBM J Res Dev 28(3) (1984): p.314–321.

DOI: 10.1147/rd.283.0314

[3] De Gans BJ, Xue LJ, Aganval US, Schubert US Ink-jet printing of linear and star polymers. Macromol Rapid Commun 26(44) (2005): p.310–314.

DOI: 10.1002/marc.200400503

[4] van den Berg AMJ, Smith PJ, Perelaer J, Schrof W, Koltzenburg S Inkjet printing of polyurethane colloidal suspensions. Soft Matter 3(2007): p.238–243. doi: 10. 1039/b610017a.

DOI: 10.1039/b610017a

[5] Derby B, Reis N Inkjet printing of highly loaded particulate suspensions. MRS Bull 28(11) (2003): p.815–818.

DOI: 10.1557/mrs2003.230

[6] Meixner RM, Cibis D, Krueger K, Goebel H Characterization of polymer inks for drop-on-demand printing. Microsyst Technol 14(8) (2008): p.1137–1142.

DOI: 10.1007/s00542-008-0639-7

[7] Tsai MH, Hwang WS Effects of pulse voltage on the droplet formation of alcohol and ethylene glycol in a piezoelectric inkjet printing process with bipolar pulse. Mater Trans 49(2) (2008): p.331–338. doi: 10. 2320/matertrans. MRA2007217.

DOI: 10.2320/matertrans.mra2007217

[8] Henning S, Tatsuya S Inkjet printing of functional materials. Mater Res Soc Bull 28(11) (2003): p.802–806.