3D Microscale Anisotropic Metamaterials for Rotation Sensing
Senses Rotations along Three Axes Simultaneously
A 3-dimensional metamaterial for orientation sensing features a perfectly anisotropic transmission response and can sense rotations along all three axes simultaneously. The technology, made from biocompatible materials, consists of micro-cubes patterned with split-ring resonators (SRRs). The sensor consists of a polymer cube with a gold patterned array of split ring resonators patterned on each side. The resonators on each face of the 3D microscale cube are patterned in different sizes and at a tilt, so the arrays do not couple to each other. This intentional patterning achieves unique optical properties. The three-axis micro inclinometer (or gyro) could be integrated into a sensor package and used as an attitude sensor for micro-robotics or nanosatellites. It may sense rotation rates far exceeding limitations of current MEMs IMUs.
3D Split-Ring Resonator Senses Rotations from 0° to 360°
Traditional split-ring resonators (SRRs) are semi-isotropic, leading to 180 degree ambiguity in sensor orientation. Moreover, 2D resonators require three separate sensors for measuring rotation about the x, y, and z axes, which can create interference in their waveform. This technology is an optical inclinometer with 3D anisotropic SRR structures defined on a polymeric cube. The anisotropic 3D design overcomes the limited range of 2D SRR structures and enables the SRR to remotely sense rotations from 0° to 360° along all three axes. Adding a different tilt angle to the patterning of the resonators on each axis suppresses interference between x, y, and z resonators.
BENEFITS AND FEATURES:
- Perfectly anisotropic transmission response
- Senses rotations from 0° to 360°
- Faster speed: Rotation rates far exceed limitations of current MEMs IMUs
- Easy, scalable and inexpensive fabrication
- Small size and remote detection
- Triaxial measurements
APPLICATIONS:
- Small, lightweight rotation sensors
- Low on-chip power or remotely monitored sensors
- Angular sensor for micro-robot
- Nanosat attitude sensor for satellite or drones
- Magnetometer
- Star tracker
- GPS
- Inclinometer
- Rotation sensor
- Gyroscope
- Navigation systems or small scale devices
- Micro-robotics or nanosatellites
- Medical microbot guidance systems
- On-chip power saving
- Measuring extremely high and low angular velocity
Phase of Development – Prototype device fabricated; isotropic resonant response measured
ResearchersPublications
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