Enhanced Circular Dichroism by F-Type Chiral Metal Nanostructures

Abstract

Circular dichroism (CD) effects have broad applications in fields including biophysical analysis, analytical chemistry, nanoscale imaging, and nanosensor design. Herein, a novel design of a tilted F-type chiral metal nanostructure composed of circular nanoholes with varying radii has been proposed to achieve remarkable CD effects, and the results demonstrate the generation of a significant current oscillation at the sharp edges where the nanoholes overlap under circularly polarized light, resulting in a strong CD effect. The CD effect can reach up to 7.5%. Furthermore, spectral modulation of the resonant wavelength can be achieved by adjusting the structural parameters, which enhances the tunability of the structure. Overall, these results provide theoretical or practical guidance for enhancing the circular dichroism signal strength of chiral metal nanostructures and designing new types of two-dimensional chiral structures.

A new nano-design of 16-bit carry look-ahead adder based on quantum technology

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Simultaneous improvement of polarization and bandgap by finite solid solution engineering

“…1,2 As an inexhaustible source of clean energy, light energy can be converted into electric energy through photovoltaic and photochemical effects, and the photovoltaic properties have great prospect for further development and application, such as the circular dichroism (CD) effects regulated by polarization and optoelectronic applications. 3–5 Thus, the photovoltaic effect plays a crucial role in energy applications. As conventional photovoltaic materials, semiconductor solar cells separate charge carriers using the potential difference induced by the space-charge region of P–N junctions.…”

Insight into the structural, optoelectronic, elastic and thermodynamic properties of new lead free double halides perovskites Cs2XCuF6 (X = Sc, Y): a first principle study

“…Although solar cells made of lead halide perovskite possess been incredibly successful due to their exceptional solar energy conversion efficiency and their cost-effective synthesis using readily available materials [26][27][28][29][30], they are plagued by chemical instability when exposed to heat, prolonged light exposure, and humid air. Additionally, their toxicity, attributed to the presence of heavy metal lead (Pb), has impeded the widespread adoption of this technology in the market [31][32][33]. As a result, there has been significant academic and industrial interest in developing leadfree halide alternatives that are both non-toxic and chemically stable to address the aforementioned critical issues [34][35][36][37][38][39][40][41][42][43].…”