Bright, circularly polarized black-body radiation from twisted nanocarbon filaments

IF 45.8 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Science Pub Date : 2024-12-19 DOI:10.1126/science.adq4068
Jun Lu, Hong Ju Jung, Ji-Young Kim, Nicholas A. Kotov
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引用次数: 0

Abstract

Planck’s law ignores but does not prohibit black-body radiation (BBR) from being circularly polarized. BBR from nanostructured filaments with twisted geometry from nanocarbon or metal has strong ellipticity from 500 to 3000 nanometers. The submicrometer-scale chirality of these filaments satisfies the dimensionality requirements imposed by fluctuation-dissipation theorem and requires symmetry breaking in absorptivity and emissivity according to Kirchhoff’s law. The resulting BBR shows emission anisotropy and brightness exceeding those of conventional chiral photon emitters by factors of 10 to 100. The helical structure of these filaments enables precise spectral tuning of the chiral emission, which can be modeled using electromagnetic principles and chirality metrics. Encapsulating nanocarbon filaments in refractive ceramics produces highly efficient, adjustable, and durable chiral emitters capable of functioning at extreme temperatures previously considered unattainable.
扭曲纳米碳丝发出的明亮圆偏振黑体辐射
普朗克定律忽略但并不禁止黑体辐射(BBR)的圆偏振。来自具有扭曲几何形状的纳米碳丝或金属丝的黑体辐射在 500 纳米到 3000 纳米之间具有很强的椭圆性。这些细丝的亚微米尺度手性满足了波动-消散定理的尺寸要求,并根据基尔霍夫定律要求打破吸收率和发射率的对称性。由此产生的 BBR 所显示的发射各向异性和亮度超过了传统手性光子发射器的 10 到 100 倍。这些灯丝的螺旋结构可实现手性发射的精确光谱调谐,并可利用电磁原理和手性度量进行建模。将纳米碳丝封装在折射陶瓷中可以产生高效、可调、耐用的手性发射器,能够在以前认为无法实现的极端温度下工作。
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来源期刊
Science
Science 综合性期刊-综合性期刊
CiteScore
61.10
自引率
0.90%
发文量
0
审稿时长
2.1 months
期刊介绍: Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science serves as a forum for discussion of important issues related to the advancement of science by publishing material on which a consensus has been reached as well as including the presentation of minority or conflicting points of view. Accordingly, all articles published in Science—including editorials, news and comment, and book reviews—are signed and reflect the individual views of the authors and not official points of view adopted by AAAS or the institutions with which the authors are affiliated. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.
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