Flexible and Stretchable Microwave Devices: Design, Fabrication and Applications

Dear Colleagues,

The growing interest in wearable wireless electronics and other unconventional wireless applications has created new opportunities for microwave devices that can withstand shape deformations and mechanical strain without impacting performance. A number of challenges remain in realizing these systems. To meet both the electrical and mechanical requirements of these applications, low-loss dielectrics, including textiles and elastomers, are combined with a variety of flexible conductors, including liquid metals; conductive composites; and thin, metallic ribbons. Devices must incorporate anticipated shape deformation into their design in order to maintain their properties during operation. In addition, high-frequency interconnects between conventional rigid electronics and soft electronics remain challenging. At the same time, shape deformation can also enable new functionality. For example, antennas can reconfigure their properties by altering their dimensions and shape. Other microwave devices such as frequency-selective surfaces can deliver new capability via intentional shape deformation, e.g., folding and stretching structures using origami principles or other means.  In light of these recent developments and the remaining challenges, this Special Issue seeks research papers, communications, and review articles that describe advances in flexible and stretchable microwave materials and devices as well as applications of these technologies.

Prof. Jacob J. Adams
Prof. Huanyu (Larry) Cheng
Guest Editors

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