Ultra-Broadband Optical Characterization of TiO2 Nanotube Arrays Revealing Annealing-Tunable THz Absorption

IF 6.8 2区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanophotonics Pub Date : 2026-07-29 DOI:10.1002/nap2.70231

Anjali Chaudhary,Morteza Afshar,Emil J. Y. Magaway,Sunil Kumar,Ravendra Kumar Varshney,Jiří Čapek,Ivan Richter,Štěpán Kment,Miguel Navarro-Cía,Luca Mascaretti

引用次数: 0

Abstract

Lithography-free spaced TiO2 NT arrays unlock tunable broadband absorption from THz to UV. By harnessing annealing-driven phase transitions, strong phonon–polariton resonances emerge in the 1.4–3.6 THz range, whereas high absorptance persists beyond 10 THz. This scalable oxide platform paves the way for compact, multifunctional devices in THz imaging, spectroscopy, and optoelectronic energy conversion.

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揭示退火可调谐太赫兹吸收的TiO2纳米管阵列的超宽带光学特性

无光刻间隔二氧化钛NT阵列解锁可调谐宽带吸收从太赫兹到紫外线。通过利用退火驱动的相变，强声子-极化子共振出现在1.4-3.6太赫兹范围内，而高吸收持续超过10太赫兹。这种可扩展的氧化物平台为太赫兹成像、光谱学和光电能量转换领域的紧凑、多功能设备铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

13.50

自引率

6.70%

发文量

358

审稿时长

7 weeks

期刊介绍： Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.