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Materials Science in Additive Manufacturing Additive manufacturing of active optics

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Figure 2. Active optical structures to control optical wavelength. (A) Light sources with tunable wavelengths across the UV to NIR range by printable
ink. Adapted with permission from Austin et al. (Copyright © 2024, The Royal Society of Chemistry). (B) UCNP‑based new wavelength generation
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for display. Images reproduced with permission from Farooq et al. (Copyright © 2024, American Chemical Society). (C) Metal–Organic cavities for
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wavelength control. Images reproduced with permission from Lv et al. (Copyright © 2020 American Chemical Society)
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Abbreviations: GQD: Graphene quantum dot; MOF: Metal‑organic framework; NIR: Near‑infrared; PL: Photoluminescence; PNC: Polymer Nanocomposite;
QD: Quantum dot; UCNP: Up‑conversion nanoparticle; UV: Ultraviolet
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Figure 3. Active steering of emitted light in various applications. (A) QD-hydrogel integrated gratings to realize switchable unidirectional emissions.
Adapted with permission from Dai et al. (Copyright © 2024, Dai et al.). (B) Precise directional control of optical source in optical tweezers. Adapted with
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permission from Kuang et al. (Copyright © 2023, Kuang et al.). (C) Active directional control of optical sources in holographic display systems. Adapted
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with permission from Wang et al. (Copyright © 2024, Wang et al.)
Abbreviations: CQDs: Carbon Quantum Dots; HBD: Heterodyne Balanced Detection; PBS: Polarizing Beam Splitter; QD: Quantum dot; SLM: Spatial light
modulator; WDM: Wavelength Division Multiplexer
Volume 3 Issue 4 (2024) 5 doi: 10.36922/msam.5748