About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Printed Electronics and Additive Manufacturing: Advanced Functional Materials, Processing Concepts, and Emerging Applications
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Presentation Title |
Additively Manufactured Multifunctional Zed Fresnel Lenses for Sensing Applications |
Author(s) |
Murad Ali, Haider Butt |
On-Site Speaker (Planned) |
Murad Ali |
Abstract Scope |
The consistent developments in additive manufacturing processes are revolutionizing the fabrication of three dimensional (3D) parts. Notably, 3D printing is making progressive developments to fabricate optical devices such as regular lenses, contact lenses, waveguides, and recently, Fresnel lenses. But extended functionalities of these optical devices are also desirable. Therefore, we demonstrate masked stereolithography based fabrication of polymer-based five-dimensional (5D) Fresnel lenses by incorporating color-change phenomena (4th dimension) using thermochromic powders that change color in response to external temperature variations (25-36°C). The holographic diffraction effect (5th dimension) is produced by imprinting a diffraction grating during the printing process. Optical focusing performance of 5D printed lenses has been evaluated by reporting achievable focal length, with < 2 mm average deviation, without post-processing in the 450-650 nm spectral range. However, in near IR region (850-980 nm), the average deviation was around 11.5 mm. Enhanced optical properties along with surface quality have been reported. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Polymers, Characterization |