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Strain Sensor via Wood Anomalies in 2D Dielectric Array

Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Siberian Federal University, 660041 Krasnoyarsk, Russia
Author to whom correspondence should be addressed.
Academic Editor: Gianluigi Zito
Nanomaterials 2021, 11(4), 1022;
Received: 19 March 2021 / Revised: 9 April 2021 / Accepted: 13 April 2021 / Published: 16 April 2021
Optical sensing is one of many promising applications for all-dielectric photonic materials. Herein, we present an analytical and numerical study on the strain-responsive spectral properties of a bioinspired sensor. The sensor structure contains a two-dimensional periodic array of dielectric nanodisks to mimic the optical behavior of grana lamellae inside chloroplasts. To accumulate a noticeable response, we exploit the collective optical mode in grana ensemble. In higher plants, such a mode appears as Wood’s anomaly near the chlorophyll absorption line to control the photosynthesis rate. The resonance is shown persistent against moderate biological disorder and deformation. Under the stretching or compression of a symmetric structure, the mode splits into a couple of polarized modes. The frequency difference is accurately detected. It depends on the stretch coefficient almost linearly providing easy calibration of the strain-sensing device. The sensitivity of the considered structure remains at 5 nm/% in a wide range of strain. The influence of the stretching coefficient on the length of the reciprocal lattice vectors, as well as on the angle between them, is taken into account. This adaptive phenomenon is suggested for sensing applications in biomimetic optical nanomaterials. View Full-Text
Keywords: Wood anomalies; dielectric array; strain sensor; bioinspired structure Wood anomalies; dielectric array; strain sensor; bioinspired structure
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MDPI and ACS Style

Bikbaev, R.G.; Timofeev, I.V.; Shabanov, V.F. Strain Sensor via Wood Anomalies in 2D Dielectric Array. Nanomaterials 2021, 11, 1022.

AMA Style

Bikbaev RG, Timofeev IV, Shabanov VF. Strain Sensor via Wood Anomalies in 2D Dielectric Array. Nanomaterials. 2021; 11(4):1022.

Chicago/Turabian Style

Bikbaev, Rashid G., Ivan V. Timofeev, and Vasiliy F. Shabanov. 2021. "Strain Sensor via Wood Anomalies in 2D Dielectric Array" Nanomaterials 11, no. 4: 1022.

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