等离子体子
光子学
材料科学
光电子学
圆极化
极化(电化学)
纳米光刻
纳米技术
光学
物理
制作
化学
医学
替代医学
物理化学
病理
微带线
作者
Ji-Young Kim,Connor McGlothin,Minjeong Cha,Zechariah Pfaffenberger,Emine Sumeyra Turali Emre,Won Jin Choi,Sang-Hoon Kim,Julie S. Biteen,Nicholas A. Kotov
标识
DOI:10.1073/pnas.2312082121
摘要
Chiral plasmonic surfaces with 3D "forests" from nanohelicoids should provide strong optical rotation due to alignment of helical axis with propagation vector of photons. However, such three-dimensional nanostructures also demand multi-step nanofabrication, which is incompatible with many substrates. Large-scale photonic patterns on polymeric and flexible substrates remain unattainable. Here, we demonstrate the substrate-tolerant direct-write printing and patterning of silver nanohelicoids with out-of-plane 3D orientation using circularly polarized light. Centimeter-scale chiral plasmonic surfaces can be produced within minutes using inexpensive medium-power lasers. The growth of nanohelicoids is driven by the symmetry-broken site-selective deposition and self-assembly of the silver nanoparticles (NPs). The ellipticity and wavelength of the incident photons control the local handedness and size of the printed nanohelicoids, which enables on-the-fly modulation of nanohelicoid chirality during direct writing and simple pathways to complex multifunctional metasurfaces. Processing simplicity, high polarization rotation, and fine spatial resolution of the light-driven printing of stand-up helicoids provide a rapid pathway to chiral plasmonic surfaces, accelerating the development of chiral photonics for health and information technologies.
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