Pneumatic dispensing of nano- to picoliter droplets of liquid metal with the StarJet method for rapid prototyping of metal microstructures
Pneumatic dispensing of nano- to picoliter droplets of liquid metal with the StarJet method for rapid prototyping of metal microstructures
复制标题
使用 StarJet 方法气动分配纳米级到皮升级液态金属液滴,以实现金属微结构的快速原型制作
DOI:
10.1007/s10404-011-0850-1
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发表时间:
2011
影响因子:
2.8
通讯作者:
P. Koltay
中科院分区:
文献类型:
--
作者:
A. Tropmann;N. Lass;N. Paust;T. Metz;C. Ziegler;R. Zengerle;P. Koltay
This study presents a new, simple and robust, pneumatically actuated method for the generation of liquid metal micro droplets in the nano- to picoliter range. The so-called StarJet dispenser utilizes a star-shaped nozzle geometry that stabilizes liquid plugs in its center by means of capillary forces. Single droplets of the liquid metal can be pneumatically generated by the interaction of the sheathing gas flow in the outer grooves of the nozzle and the liquid metal. For experimental validation, a print head was build consisting of silicon chips with a star-shaped nozzle geometry and a heated actuator (up to 280°C). The silicon chips are fabricated by Deep Reactive Ion Etching (DRIE). Chip designs with different star-shaped geometries were able to generate droplets with diameters in the range of the corresponding nozzle diameters. The StarJet can be operated in two modes: Either continuous droplet dispensing mode or drop on demand (DoD) mode. The continuous droplet generation mode for a nozzle with 183 μm diameter shows tear-off frequencies between 25 and 120 Hz, while droplet diameters remain constant at 210 μm for each pressure level. Metal columns were printed with a thickness of 0.5–1.0 mm and 30 mm height (aspect ratio >30), to demonstrate the directional stability of droplet ejection and its potential as a suitable tool for direct prototyping of the metal microstructures.
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DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
S. Haferl;Daniel Attinger;Z. Zhao;J. Giannakouros;D. Poulikakos
通讯作者:
D. Poulikakos
DOI:
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发表时间:
2003
期刊:
影响因子:
--
作者:
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通讯作者:
H.H. Zhu
DOI:
10.1021/la801194j
发表时间:
2008
期刊:
Langmuir : the ACS journal of surfaces and colloids
影响因子:
--
作者:
T. Metz;W. Streule;R. Zengerle;P. Koltay
通讯作者:
P. Koltay
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
Michael Kübler;Björn Lemmermeyer;W. Wehl;J. Wild
通讯作者:
J. Wild
影响因子:
4
作者:
Anna, SL;Bontoux, N;Stone, HA
通讯作者:
Stone, HA