Physical Sciences and Mathematics | Open Access Articles

The 2021 Flexible And Printed Electronics Roadmap, Yvan Bonnassieux, Christoph J. Brabec, Yong Cao, Tricia Breen Carmichael, Michael L. Chabinyc, Kwang Ting Cheng, Gyoujin Cho, Anjung Chung, Corie L. Cobb, Andreas Distler, Hans Joachim Egelhaaf, Gerd Grau, Xiaojun Guo, Ghazaleh Haghiashtiani, Tsung Ching Huang, Muhammad M. Hussain, Benjamin Iniguez, Taik Min Lee, Ling Li, Yuguang Ma, Dongge Ma, Michael C. Mcalpine, Tse Nga Ng, Ronald Österbacka

Chemistry and Biochemistry Publications

This roadmap includes the perspectives and visions of leading researchers in the key areas of flexible and printable electronics. The covered topics are broadly organized by the device technologies (sections 1–9), fabrication techniques (sections 10–12), and design and modeling approaches (sections 13 and 14) essential to the future development of new applications leveraging flexible electronics (FE). The interdisciplinary nature of this field involves everything from fundamental scientific discoveries to engineering challenges; from design and synthesis of new materials via novel device design to modelling and digital manufacturing of integrated systems. As such, this roadmap aims to serve as a resource …

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Stretchable Ultrasheer Fabrics As Semitransparent Electrodes For Wearable Light-Emitting E-Textiles With Changeable Display Patterns, Yunyun Wu, Sara S. Mechael, Cecilia Lerma, R. Stephen Carmichael, Tricia Breen Carmichael

Chemistry and Biochemistry Publications

Despite the development throughout human history of a wealth of textile materials and structures, the porous structures and non-planar surfaces of textiles are often viewed as problematic for the fabrication of wearable e-textiles and smart clothing. Here, we demonstrate a new textile-centric design paradigm in which we use the textile structure as an integral part of wearable device design. We coat the open framework structure of an ultrasheer knitted textile with a conformal gold film using solution-based metallization to form gold-coated ultrasheer electrodes that are highly conductive (3.6 ± 0.9 Ω/sq) and retain conductivity to 200% strain with R/R0 < 2. The ultrasheer electrodes produce wearable, highly stretchable light-emitting e-textiles that function to 200% strain. Stencil printing a wax resist provides patterned electrodes for patterned light emission; furthermore, incorporating soft-contact lamination produces light-emitting textiles that exhibit, for the first time, readily changeable patterns of illumination.

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Solution Deposition Of Conformal Gold Coatings On Knitted Fabric For E-Textiles And Electroluminescent Clothing, Tricia Carmichael, Yunyun Wu, Sara S. Mechael, Yiting Chen

Chemistry and Biochemistry Publications

The vision for wearable electronics involves creating an imperceptible boundary between humans and devices. Integrating electronic devices into clothing represents an important path to this vision; however, combining conductive materials with textiles is challenging due to the porous structure of knitted textiles. Stretchability depends on maintaining the void structure between the yarns of the fabric; filling these voids with conductive materials stiffens the textile and can lead to detrimental cracking. The authors demonstrate the solution-based metallization of a knitted textile that conformally coats individual fibers with gold, leaving the void structure intact. The resulting gold-coated textile is highly conductive, with …

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Chemistry and Biochemistry Publications

Stretchable Ultrasheer Fabrics As Semitransparent Electrodes For Wearable Light-Emitting E-Textiles With Changeable Display Patterns, Yunyun Wu, Sara S. Mechael, Cecilia Lerma, R. Stephen Carmichael, Tricia Breen Carmichael

Chemistry and Biochemistry Publications

Solution Deposition Of Conformal Gold Coatings On Knitted Fabric For E-Textiles And Electroluminescent Clothing, Tricia Carmichael, Yunyun Wu, Sara S. Mechael, Yiting Chen

Chemistry and Biochemistry Publications