Overview of conventional and unconventional sintering methods

Pinto, Felipe M.; Silva, R.C.; Porta, Felipe A. La

doi:10.1016/b978-0-12-819720-2.00002-3

Cited by 2 publications

(1 citation statement)

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“…A sintering step is required to coalesce the NPs into a film to provide connectivity and achieve the desired film properties [23]. Conventionally, sintering is performed by heat treatment, where the printed sample is placed in a furnace [24]. However, NASA has a power budget of 2200 W aboard the ISS, and the current furnace power consumption exceeds this limitation.…”

Section: Introductionmentioning

confidence: 99%

Laser Sintering Direct Ink Write Silver Nanoflake Ink for On-Demand Manufacturing of Electronics in Space

Schlake,

Kandadai

2024

IEEE Flex. Electron.

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Developing manufacturing methods for flexible electronics will enable and improve the large-scale production of flexible, spatially-efficient, and lightweight devices. Laser sintering is a promising post-processing method to produce consolidated films for flexible electronic devices while reducing power consumption compared to standard thermal sintering. This work further explores laser sintering of direct ink write (nScrypt) printed silver as a continuation of previous studies on nScryptprinted silver and aerosol jet-printed gold, platinum, and titanium dioxide for manufacturing printed electronics on the International Space Station. Four different laser wavelengths are studied for laser sintering nScrypt silver nanoflake ink on flexible polyimide and rigid glass substrates. The laser systems investigated are continuous wave (CW) 808 nm, CW 445 nm, CW 1064 nm, and pulsed femtosecond (fs) 1040 nm lasers. The laser power and scanning speed are varied to compare the laser systems and optimize laser sintering parameters for the silver ink. The resistivity of the laser-sintered silver NPs is compared to the resistivity of the unsintered silver to demonstrate the effectiveness of laser sintering. An optimal resistivity of 5.81×10 -8 Ω-m is achieved for the nScrypt silver laser sintered using a fs 1040 nm laser.

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Section: Introductionmentioning

confidence: 99%