Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 6, Pages 4248-4253Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am405972e
Keywords
silver nanowire; stretchable antenna; wireless strain sensing; printed electronics; microstrip patch antenna
Funding
- National Science Foundation through EFRI program [EFRI-1240438]
- ASSIST Engineering Research Center at NCSU [EEC-1160483]
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We demonstrate a class of microstrip patch antennas that are stretchable, mechanically tunable, and reversibly deformable. The radiating element of the antenna consists of highly conductive and stretchable material with screen-printed silver nanowires embedded in the surface layer of an elastomeric substrate. A 3-GNz microstrip patch antenna and a 6-GHz 2-element patch array are fabricated. Radiating properties of the antennas are characterized under tensile strain and agree well with the simulation results. The antenna is reconfigurable because the resonant frequency is a function of the applied tensile strain. The antenna is thus well suited for applications like wireless strain sensing. The material and fabrication technique reported here could be extended to achieve other types of stretchable antennas with more complex patterns and multilayer structures.
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