Axially-Anisotropic Hierarchical Grating 2D Guided-Mode Resonance Strain-Sensor

Abstract

Guided-mode resonance strain sensors are planar binary gratings that have fixed resonance positions and quality factors decided by material properties and grating parameters. If one is restricted by material choices, the quality factor can only be improved by adjusting the grating parameters. We report a new method to improve quality factor by applying a slotting design rule to a grating design. We investigate this design rule by first providing a theoretical analysis on how it works and then applying it to a previously studied 2D solid-disc guided-mode resonance grating strain sensor design to create a new slotted-disc guided-mode resonance grating design. We then use finite element analysis to obtain reflection spectrum results that show the new design produces resonances with at least a 6-fold increase in quality factor over the original design and more axially-symmetric sensitivities. Lastly, we discuss the applicability of the slotting design rule to binary gratings in general as a means of improving grating performance while retaining both material and resonance position choices.

A single sensor based multispectral imaging camera using a narrow spectral band color mosaic integrated on the monochrome CMOS image sensor

“…However, it has been proved both theoretically and experimentally [33,49] that 1D metal grating filters are polarization dependent and can produce colours only under transverse magnetic (TM) illumination. 2D metal grating filters and dielectric guided mode resonance (GMR) filters are reported to bypass the polarization effects [25,[50][51][52]. A hexagonal hole array inserted in a metal-dielectric-metal multilayer has been reported to slightly reduce the spectral width [20].…”

Imprinted Polymer-Based Guided Mode Resonance Grating Strain Sensors

“…Foland et al describe GMR gratings embedded in a polydimethylsolixane (PDMS) membrane to be utilized as microfluidic pressure sensor [22] and as biaxial strain sensor [23]. However, apart from this work, only theoretical analysis for GMR grating strain sensing can be found in the current literature [24].…”