Millimeter-wave spoof surface plasmon polariton waveguide with uniform-depth transition for liquid material detection

Le Zhang，Qing1; Chan，Ka Fai1; Zhang，Qingfeng2

2021-04-01

10.1088/1361-6463/abd4a7

JOURNAL OF PHYSICS D-APPLIED PHYSICS   影响因子和分区

0022-3727

1361-6463

In this paper, we propose a spoof surface plasmon polariton (SPP) waveguide with uniform-depth transition at 500-730 GHz. It is excited by a standard waveguide with simple offsets in the vertical and longitudinal directions, eliminating the need for the conventional tapering-depth transition. Since the SPP waveguide with strong field confinement is sensitive to the surround environment, this SPP waveguide can be applied for the detection of liquid materials. The liquid material injected into the SPP grooves behaves as a resonator, leading to a stopband. The frequency resolution can reach 15 GHz for a variation of 0.1 in the dielectric constant of the liquid materials. To further verify the concept of the proposed SPP waveguide with uniform-depth transition, a scaled structure at 50-66 GHz frequency band is designed and fabricated. The sample was fabricated by 3D printing technique with surface metallization. The measured reflection coefficient is below -10 dB and the measured insertion loss is about -4 dB within 50-66 GHz.

spoof surface plasmon polariton millimeter-wave uniform-depth transition liquid material detection

SCI ; EI

英语

通讯

National Natural Science Foundation of China[61871207]

Physics

Physics, Applied

WOS:000609435200001

IOP PUBLISHING LTD

20210709904590

3D printers ; Dielectric materials ; Electromagnetic wave polarization ; Liquids ; Millimeter waves ; Phonons ; Photons ; Surface plasmons ; Waveguides

Dielectric Materials:708.1 ; Electromagnetic Waves:711 ; Waveguides:714.3 ; Printing Equipment:745.1.1 ; Atomic and Molecular Physics:931.3

PHYSICS

Web of Science

1.State Key Laboratory of Terahertz,Millimeter Waves in City University of Hong Kong,Hong Kong,Hong Kong
2.Department of Electrical and Electronics Engineering,Southern University of Science and Technology,Shenzhen,China

Le Zhang，Qing,Chan，Ka Fai,Zhang，Qingfeng. Millimeter-wave spoof surface plasmon polariton waveguide with uniform-depth transition for liquid material detection[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2021,54(13).

Le Zhang，Qing,Chan，Ka Fai,&Zhang，Qingfeng.(2021).Millimeter-wave spoof surface plasmon polariton waveguide with uniform-depth transition for liquid material detection.JOURNAL OF PHYSICS D-APPLIED PHYSICS,54(13).

Le Zhang，Qing,et al."Millimeter-wave spoof surface plasmon polariton waveguide with uniform-depth transition for liquid material detection".JOURNAL OF PHYSICS D-APPLIED PHYSICS 54.13(2021).