Marangoni flow on an inkjet nozzle plate

被引:30
作者
De Jong, Jos
Reinten, Hans
Wijshoff, Herman
van den Berg, Marc
Delescen, Koos
van Dongen, Rini
Mugele, Frieder
Versluis, Michel
Lohse, Detlef
机构
[1] Univ Twente, Fac Sci & Technol, Burgers Ctr Fluid Dynam, Impact Inst,Phys Fluids Grp, NL-7500 AE Enschede, Netherlands
[2] Oce Technol, NL-5900MA Venlo, Netherlands
[3] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands
[4] Univ Twente, Fac Sci & Technol, Impact & Mesa Inst, NL-7500 AE Enschede, Netherlands
关键词
D O I
10.1063/1.2812473
中图分类号
O59 [应用物理学];
学科分类号
摘要
In piezo inkjet printing, nozzle failures are often caused by an ink layer on the nozzle plate. It is experimentally shown that the ink layer at the nozzle is formed through streamers of ink, emanating from a central ink band on the nozzle plate. The streamers propagate over a wetting nanofilm of 13 nm thickness, directed toward the actuated nozzles. The motion of the front end of the streamers follows a power law in time with an exponent 1/2. The observations are consistent with a surface tension gradient driven flow. The origin of the Marangoni flow is an effective lower surfactant concentration of the ink around the nozzle. (c) 2007 American Institute of Physics.
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页数:3
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