Next Article in Journal
VGS Hand: A Novel Hybrid Grasping Modes Robot Hand with Variable Geometrical Structure
Previous Article in Journal
Comparison of Mechanical and Electrical Characteristics of Various Polymers Blended with Ground Tire Rubber (GTR) and Applications
Previous Article in Special Issue
Rotation of Liquid Metal Droplets Solely Driven by the Action of Magnetic Fields
Article Menu

Export Article

Open AccessArticle
Appl. Sci. 2019, 9(8), 1565; https://doi.org/10.3390/app9081565

Low-Cost Rapid Fabrication of Conformal Liquid-Metal Patterns

1
Department of Electrical Engineering, University of Hawaiʻi at Mānoa, Honolulu, HI 96822, USA
2
Center of Excellence, Arab Academy for Science, Technology and Maritime Transport, Smart Village, P.O. Box 12577, Egypt
3
Bionano Technology, Gachon University, Seongnam, Gyeonggi 13120, Korea
*
Authors to whom correspondence should be addressed.
Received: 28 February 2019 / Revised: 8 April 2019 / Accepted: 9 April 2019 / Published: 15 April 2019
(This article belongs to the Special Issue Applications of Liquid Metals)
PDF [2087 KB, uploaded 15 April 2019]
  |  

Abstract

Patterned conformal conductive structures are used to realize flexible electronics for applications such as electronic skin, communication devices, and sensors. Thus, there is a demand for low-cost rapid fabrication techniques for flexible and stretchable conductors. Spray-coating of liquid metals is a prototyping method that is compatible with elastic substrates. In this work, UV-curable and polyimide masks were used to pattern sprayed liquid metal (LM). The effect of the spraying parameters on the thickness and conductivity of the LM was characterized. A minimum LM linewidth of 48 µm was achieved, along with a minimum gap width of 34 µm. A LM patch antenna and transmission line, which can potentially be used for communication systems, were demonstrated using this fabrication process.
Keywords: prototyping; flexible electronics; conformal devices prototyping; flexible electronics; conformal devices
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Elassy, K.S.; Akau, T.K.; Shiroma, W.A.; Seo, S.; Ohta, A.T. Low-Cost Rapid Fabrication of Conformal Liquid-Metal Patterns. Appl. Sci. 2019, 9, 1565.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top