纳米锥体等离子基板的热驱动共振调谐

IF 5.1 2区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Arka Jyoti Roy, Sai Rama Krishna Malladi and Shourya Dutta-Gupta
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引用次数: 0

摘要

等离子体纳米粒子由于其特殊的光学特性和在纳米尺度上操纵光的能力而吸引了研究人员,并已被用于各种应用。本文探讨了金纳米双金字塔(AuNBP)粒子的形状控制,以实现高宽带光谱可调性。通过定制加热配置,我们可以调整共振波长超过250纳米。通过原位反射光谱分析、扫描电镜分析和原位透射电镜分析,我们证明了共振位移是由各向异性粒子的形状和长宽比的变化引起的。将纳米双锥体涂层基板从室温加热到400°C,使我们能够有效地调整750 nm和530 nm之间的共振波长。此外,基板的局部加热使得制造具有局部调制共振波长的基板成为可能。该研究为温度对AuNBP形状变化的影响提供了见解,并有助于设计用于可调谐滤光片、生物传感和非线性信号增强的定制等离子体基板。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Thermally driven resonance tuning in nanobipyramid plasmonic substrates†

Thermally driven resonance tuning in nanobipyramid plasmonic substrates†

Plasmonic nanoparticles have captivated researchers due to their exceptional optical properties and ability to manipulate light at the nanoscale and have been utilized in various applications. This article explores the shape control of gold nano bipyramid (AuNBP) particles to achieve highly broadband spectral tunability. By tailoring heating profiles, we can adjust the resonance wavelength by over 250 nm. Using in situ reflection spectroscopy, SEM analysis, and in situ TEM analysis, we demonstrate that the resonance shift results from changes in the shape and aspect ratio of the anisotropic particles. Heating the nano bipyramid-coated substrates from room temperature to 400 °C allows us to effectively tune the resonance wavelength between 750 nm and 530 nm. Additionally, localized heating of the substrates enables the fabrication of substrates with locally modulated resonance wavelengths. This study provides insights into the impact of temperature on the shape change of AuNBP and aids in designing custom-tailored plasmonic substrates for applications in tunable optical filters, biosensing and non-linear signal enhancement.

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来源期刊
Journal of Materials Chemistry C
Journal of Materials Chemistry C MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED
CiteScore
10.80
自引率
6.20%
发文量
1468
期刊介绍: The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study: Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability. Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine. Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive. Bioelectronics Conductors Detectors Dielectrics Displays Ferroelectrics Lasers LEDs Lighting Liquid crystals Memory Metamaterials Multiferroics Photonics Photovoltaics Semiconductors Sensors Single molecule conductors Spintronics Superconductors Thermoelectrics Topological insulators Transistors
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