scholarly journals High-resolution inductive measurement of electrical resistivity and density of electromagnetically levitated liquid metal droplets

2018 ◽  
Vol 89 (12) ◽  
pp. 124709 ◽  
Author(s):  
Georg Lohöfer
Keyword(s):  
Electrical Resistivity ◽  
High Resolution ◽  
Liquid Metal ◽  
Inductive Measurement ◽  
Electromagnetically Levitated ◽  
Metal Droplets

scholarly journals In-situ monitoring for liquid metal jetting using a millimeter-wave impedance diagnostic

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Tammy Chang ◽  
Saptarshi Mukherjee ◽  
Nicholas N. Watkins ◽  
David M. Stobbe ◽  
Owen Mays ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Millimeter Wave ◽  
Manufacturing Systems ◽  
Wave Impedance ◽  
In Situ Monitoring ◽  
Full Wave ◽  
Drop On Demand ◽  
The Time Domain ◽  
Metal Droplets

AbstractThis article presents a millimeter-wave diagnostic for the in-situ monitoring of liquid metal jetting additive manufacturing systems. The diagnostic leverages a T-junction waveguide device to monitor impedance changes due to jetted metal droplets in real time. An analytical formulation for the time-domain T-junction operation is presented and supported with a quasi-static full-wave electromagnetic simulation model. The approach is evaluated experimentally with metallic spheres of known diameters ranging from 0.79 to 3.18 mm. It is then demonstrated in a custom drop-on-demand liquid metal jetting system where effective droplet diameters ranging from 0.8 to 1.6 mm are detected. Experimental results demonstrate that this approach can provide information about droplet size, timing, and motion by monitoring a single parameter, the reflection coefficient amplitude at the input port. These results show the promise of the impedance diagnostic as a reliable in-situ characterization method for metal droplets in an advanced manufacturing system.

scholarly journals Shaping and Controlled Fragmentation of Liquid Metal Droplets through Cavitation

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
M. S. Krivokorytov ◽  
Q. Zeng ◽  
B. V. Lakatosh ◽  
A. Yu. Vinokhodov ◽  
Yu. V. Sidelnikov ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Metal Droplets

Noncoalescent liquid metal droplets sustained on a magnetic field-circulated liquid metal bath surface

2019 ◽  
Vol 115 (8) ◽  
pp. 083702 ◽  
Author(s):  
Xi Zhao ◽  
Lixiang Yang ◽  
Yujie Ding ◽  
Pengju Zhang ◽  
Jing Liu
Keyword(s):  
Magnetic Field ◽  
Liquid Metal ◽  
Bath Surface ◽  
Metal Bath ◽  
Liquid Metal Bath ◽  
Metal Droplets

Electrochemically controllable actuation of liquid metal droplets based on Marangoni effect

2019 ◽  
Vol 126 (8) ◽  
pp. 084505
Author(s):  
Guangyong Li ◽  
Jianke Du ◽  
Aibing Zhang ◽  
Dong-weon Lee
Keyword(s):  
Liquid Metal ◽  
Marangoni Effect ◽  
Metal Droplets

Three-Dimensional, High-Resolution Printing of Carbon Nanotube/Liquid Metal Composites with Mechanical and Electrical Reinforcement

Nano Letters ◽  
2019 ◽  
Vol 19 (8) ◽  
pp. 4866-4872 ◽  
Author(s):  
Young-Geun Park ◽  
Hyegi Min ◽  
Hyobeom Kim ◽  
Anar Zhexembekova ◽  
Chang Young Lee ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Resolution ◽  
Liquid Metal ◽  
Three Dimensional ◽  
Metal Composites
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