Laser Sintering of Liquid Metal Nanoparticles for Scalable Manufacturing of Soft and Flexible Electronics

2018 ◽  
Vol 10 (33) ◽  
pp. 28232-28241 ◽  
Author(s):  
Shanliangzi Liu ◽  
Michelle C. Yuen ◽  
Edward L. White ◽  
J. William Boley ◽  
Biwei Deng ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Metal Nanoparticles ◽  
Flexible Electronics ◽  
Laser Sintering

Localized Laser Sintering of Metal Nanoparticle Inks Printed with Aerosol Jet® Technology for Flexible Electronics

2017 ◽  
Vol 14 (4) ◽  
pp. 132-139 ◽  
Author(s):  
Michael J. Renn ◽  
Matthew Schrandt ◽  
Jaxon Renn ◽  
James Q. Feng
Keyword(s):  
Metal Nanoparticles ◽  
Flexible Electronics ◽  
Low Cost ◽  
Damage Threshold ◽  
Laser Sintering ◽  
Heating Time ◽  
Metal Nanoparticle ◽  
Polymer Materials ◽  
Nanoparticle Inks ◽  
Short Heating Time

Direct-write methods, such as the Aerosol Jet® technology, have enabled fabrication of flexible multifunctional 3-D devices by printing electronic circuits on thermoplastic and thermoset polymer materials. Conductive traces printed by additive manufacturing typically start in the form of liquid metal nanoparticle inks. To produce functional circuits, the printed metal nanoparticle ink material must be postprocessed to form conductive metal by sintering at elevated temperature. Metal nanoparticles are widely used in conductive inks because they can be sintered at relatively low temperatures compared with the melting temperature of bulk metal. This is desirable for fabricating circuits on low-cost plastic substrates. To minimize thermal damage to the plastics, while effectively sintering the metal nanoparticle inks, we describe a laser sintering process that generates a localized heat-affected zone (HAZ) when scanning over a printed feature. For sintering metal nanoparticles that are reactive to oxygen, an inert or reducing gas shroud is applied around the laser spot to shield the HAZ from ambient oxygen. With the shroud gas-shielded laser, oxygen-sensitive nanoparticles, such as those made of copper and nickel, can be successfully sintered in open air. With very short heating time and small HAZ, the localized peak sintering temperature can be substantially higher than that of damage threshold for the underlying substrate, for effective metallization of nanoparticle inks. Here, we demonstrate capabilities for producing conductive tracks of silver, copper, and copper–nickel alloys on flexible films as well as fabricating functional thermocouples and strain gauge sensors, with printed metal nanoparticle inks sintered by shroud-gas-shielded laser.

Oxide rupture-induced conductivity in liquid metal nanoparticles by laser and thermal sintering

Nanoscale ◽  
2019 ◽  
Vol 11 (38) ◽  
pp. 17615-17629 ◽  
Author(s):  
Shanliangzi Liu ◽  
Serrae N. Reed ◽  
Matthew J. Higgins ◽  
Michael S. Titus ◽  
Rebecca Kramer-Bottiglio
Keyword(s):  
Electrical Conductivity ◽  
Liquid Metal ◽  
Metal Nanoparticles ◽  
Laser Sintering ◽  
Thermal Sintering

The oxide rupture-induced mechanisms that enable electrical conductivity of liquid metal nanoparticles using thermal and laser sintering.

Liquid metal-based nanocomposite materials: Fabrication technology and applications

Nanoscale ◽  
2021 ◽  
Author(s):  
Hiroki Ota ◽  
Nyamjargal Ochirkhuyag ◽  
Ryosuke Matsuda ◽  
Zihao Song ◽  
Fumika Nakamura ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Flexible Electronics ◽  
Liquid Metals ◽  
Nanocomposite Materials ◽  
Fabrication Technology

Research on liquid metals has been steadily garnering more interest in recent times because the properties of these metals are conducive to flexible electronics applications; further, these metals are in...

Printable and Recyclable Conductive Ink Based on a Liquid Metal with Excellent Surface Wettability for Flexible Electronics

2021 ◽  
Vol 13 (6) ◽  
pp. 7443-7452
Author(s):  
Jianyu Xu ◽  
Hongda Guo ◽  
Hongyao Ding ◽  
Qiao Wang ◽  
Ziqing Tang ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Flexible Electronics ◽  
Surface Wettability ◽  
Conductive Ink

Functionalization of liquid metal nanoparticles via the RAFT process

2021 ◽  
Author(s):  
Bo Fan ◽  
Jing Wan ◽  
Yiyi Liu ◽  
Wendy Wenjun Tian ◽  
San H. Thang
Keyword(s):  
Liquid Metal ◽  
Metal Nanoparticles ◽  
Grafted Polymers ◽  
Proper Design ◽  
Selection Of

The proper design and selection of RAFT agents allow the preparation of eutectic gallium–indium (EGaIn) based liquid metal nanoparticles with grafted polymers.

Reconfigurable electronic devices enabled by laser-sintered liquid metal nanoparticles

2019 ◽  
Vol 4 (1) ◽  
pp. 015004 ◽  
Author(s):  
Shanliangzi Liu ◽  
Michelle C Yuen ◽  
Rebecca Kramer-Bottiglio
Keyword(s):  
Liquid Metal ◽  
Metal Nanoparticles ◽  
Electronic Devices

Dynamic Temperature Control System for the Optimized Production of Liquid Metal Nanoparticles

2020 ◽  
Vol 3 (7) ◽  
pp. 6905-6914 ◽  
Author(s):  
Hongda Lu ◽  
Shi-Yang Tang ◽  
Zixuan Dong ◽  
Di Liu ◽  
Yuxin Zhang ◽  
...  
Keyword(s):  
Control System ◽  
Liquid Metal ◽  
Metal Nanoparticles ◽  
Temperature Control ◽  
Temperature Control System ◽  
Dynamic Temperature
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