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High-Resolution Liquid Alloy Patterning for Small Stretchable Strain Sensor Arrays
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
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2018 (English)In: Advanced materials technologologies, ISSN 2365-709X, Vol. 3, no 4, article id 1700330Article in journal (Refereed) Published
Abstract [en]

Soft material applied technology has in recent years become more advanced, enabling for, e.g., soft robotics, skin electronics, and wearable systems. Yet, the processing technology of soft materials has not been sufficiently developed to create high performance in soft and stretchable systems, as compared to the processing technology of conventional electronics or electromechanical systems. Liquid alloys have shown excellent properties for soft and stretchable electrical interconnectors and conductors, which is a basic building block to produce electric or electromechanical systems. In order to overcome the limited resolution of previously developed liquid alloy patterning methods for large-area printed circuits, this work explores the possibility of employing shrinking substrates. By utilizing the characteristics of liquid alloys and elastomers the pattern resolution is improved through a stretch-shrink patterning (SSP) process. The process provides highly conductive liquid conductors of high resolution and can be combined with existing printing techniques for liquid alloys. The SSP process increases design flexibility of soft and stretchable systems that use liquid alloys and enables designs with finer and denser patterns, and cost-effective production for small scale systems.

Place, publisher, year, edition, pages
2018. Vol. 3, no 4, article id 1700330
Keywords [en]
elastomers, high-resolution patterning, liquid alloys, shrink substrates, stretchable strain sensors
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:uu:diva-353211DOI: 10.1002/admt.201700330ISI: 000430164100012OAI: oai:DiVA.org:uu-353211DiVA, id: diva2:1217349
Available from: 2018-06-13 Created: 2018-06-13 Last updated: 2018-06-14Bibliographically approved

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Sahlberg, ArneNguyen, HugoHjort, KlasJeong, Seung Hee

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