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<p>Chirality is a three-dimensional property that is limited in planar configurations due to restricted light-matter interactions. However the planar chiral nanostructures exhibit minimal chiroptical effects in far fields due to two-dimensional nature and small thickness. In order to overcome this limitation multilayered chiral systems is proposed in present work. Stacking multiple layers of U-shaped Titanium Nitride (TiN) nanostructures can increase overall thickness and thus enhance the pronounced chiral response. This paper utilizes two layers of U-shaped TiN nanostructure, each non-chiral individually but inducing chirality when stacked and tilted between 0° to 180°. Finite-difference time-domain (FDTD) simulations are used to analyze impact of twist angles on chiroptical responses, optimizing light manipulation and spectral sensitivity in photodetector applications.</p>

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Exploring chiroptical response in photodetectors using multilayered U-shaped titanium nitride nanostructures

  • 期刊论文

  • 发表日期：

    2026年3月27日

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  • Harsimran Jit Kaur

摘要

Chirality is a three-dimensional property that is limited in planar configurations due to restricted light-matter interactions. However the planar chiral nanostructures exhibit minimal chiroptical effects in far fields due to two-dimensional nature and small thickness. In order to overcome this limitation multilayered chiral systems is proposed in present work. Stacking multiple layers of U-shaped Titanium Nitride (TiN) nanostructures can increase overall thickness and thus enhance the pronounced chiral response. This paper utilizes two layers of U-shaped TiN nanostructure, each non-chiral individually but inducing chirality when stacked and tilted between 0° to 180°. Finite-difference time-domain (FDTD) simulations are used to analyze impact of twist angles on chiroptical responses, optimizing light manipulation and spectral sensitivity in photodetector applications.