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Silver Nanowire Coatings for Electrically Conductive Textiles
| Content Provider | Semantic Scholar |
|---|---|
| Author | Maheshwari, Nupur |
| Copyright Year | 2016 |
| Abstract | There has been steep growth in wearable devices over the past 5 years and the ability to seamlessly integrate these devices into textiles is an exciting next step. One crucial component of achieving e-textiles is the ability of a textile to be electrically conductive for signal and power transfer. Commercially available conductive fabric typically involves metal plating, which degrades with bending and stretching. Recent alternative coatings such as polymers and carbon nanotubes have issues with low lifetimes and poor conductivity, respectively. These problems are addressed by coating fabrics and threads with networks of solution-processed silver nanowires. These silver nanowire coatings are conductive and mechanically flexible. Several deposition techniques were explored to coat fabrics including dip coating, brush coating, and transfer printing. In the latter, nanowires are printed on commercially available transfer paper coated using the Mayer rod coating technique and transferred onto different fabrics (cotton, polyester-cotton and viscose-linen). Transfer printing uses the least amount of silver nanowires compared to other coating techniques and is therefore lowest in cost. Sheet resistances in the range of 10 80 Ω/ with a materials cost estimate of $ 16 4/m respectively were achieved using the transfer printing technique. The transfer printing technique offers advantages including ease of application and patterning, it works for various natural and synthetic fabrics without the need for pre-treatment and it can be done at a separate time from textile fabrication. The silver nanowire coating compared to typical metal inks provide high mechanical flexibility, transparency and used less metal which results in a thinner, lighter-weight film. These silver nanowire printed fabrics are used to show three applications an LED integrated fabric for apparel and fashion, electromagnetic interference shielding and Joule heating for thermal management. Overall, this research demonstrates an industrially compatible, printable coating process that can impart conductivity to a wide range of fabrics. iii This research also designs and fabricates stretchable conductive threads. Polyesterrubber threads in a stretched-state were dip-coated with silver nanowires. After several stretching cycles, the silver nanowire coating creates a buckling pattern that helps preserve the resistance of the thread with subsequent stretching. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://uwspace.uwaterloo.ca/bitstream/handle/10012/10868/Maheshwari_Nupur.pdf?isAllowed=y&sequence=3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
