Brush-painting and photonical sintering of copper and silver inks on cotton fabric to form antennas for wearable ultra-high-frequency radio-frequency identification tags

Additive deposition of inks with metallic inclusions provides compelling means to embed electronics into clothing in a seamless way. We present a simple single-step brush-painting method for depositing copper and silver inks directly on ordinary cotton fabric and discuss the optimization of the phot...

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Bibliographic Details
Published in:Textile research journal 2016-09, Vol.86 (15), p.1616-1624
Main Authors: Wang, Jianhua, Liu, Jun, Virkki, Johanna, Björninen, Toni, Sydänheimo, Lauri, Cheng, Lianglun, Ukkonen, Leena
Format: Article
Language:English
Subjects:
ANTENNAS
Brushes
Copper
COTTON
Cotton fabrics
ELECTRONIC PRODUCTS
Electronics
FABRICS
FREQUENCY
Ink & ink industry
Inks
PAINTS
Radio frequency identification
Silver
SINTERING
Studies
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Summary:Additive deposition of inks with metallic inclusions provides compelling means to embed electronics into clothing in a seamless way. We present a simple single-step brush-painting method for depositing copper and silver inks directly on ordinary cotton fabric and discuss the optimization of the photonical sintering of both materials. For the first time, we demonstrate the deposition and sintering of copper oxide ink on fabric achieving high electrical conductivity suitable for radio-frequency electronics. The results from wireless testing confirmed that the radio-frequency identification tags based on the copper and silver ink antennas were readable from 6 and 10 m, respectively.
ISSN:0040-5175
1746-7748
DOI:10.1177/0040517515596969