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<p>Correlated disorder is not uncommon in nature and often possesses unexpectedly unique properties, inspiring scientists to explore disorder as a functional design element. However, the controlled realization and reproduction of disordered nanostructures remain experimentally challenging, with the concept of “disorder” itself implying its multifaceted nature. Here, we present a methodology to tune structural disorder using metal-infiltrated block copolymers. Starting from a single-grain hexagonal lattice formed by sphere-forming block copolymer thin films, we intentionally introduce and modulate disorder by controlling annealing temperatures and the type of incorporated metals. We establish a robust analytical framework to quantify the order/disorder parameters, providing a clear yet precise assessment of structural irregularity. Supported by molecular dynamics simulations that reveal the mechanisms of disorder formation, we demonstrate a comprehensive dispersion spectrum of nanoparticles—ranging from highly ordered to disordered states. Supported by phononic bandgap calculations, we show that this continuum can serve as a platform for the controlled engineering of disordered wave-manipulating systems.</p>

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Quantitative control of orientational and positional disorder in nanopatterned arrays of metal-infiltrated block copolymers

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月28日

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  • Sung Kwan Tae,
  • Gabriella Pasya Irianti,
  • Ye Chan Kim,
  • Seong-Gyun Im,
  • S. Joon Kwon,
  • Su-Mi Hur,
  • So Youn Kim

摘要

Correlated disorder is not uncommon in nature and often possesses unexpectedly unique properties, inspiring scientists to explore disorder as a functional design element. However, the controlled realization and reproduction of disordered nanostructures remain experimentally challenging, with the concept of “disorder” itself implying its multifaceted nature. Here, we present a methodology to tune structural disorder using metal-infiltrated block copolymers. Starting from a single-grain hexagonal lattice formed by sphere-forming block copolymer thin films, we intentionally introduce and modulate disorder by controlling annealing temperatures and the type of incorporated metals. We establish a robust analytical framework to quantify the order/disorder parameters, providing a clear yet precise assessment of structural irregularity. Supported by molecular dynamics simulations that reveal the mechanisms of disorder formation, we demonstrate a comprehensive dispersion spectrum of nanoparticles—ranging from highly ordered to disordered states. Supported by phononic bandgap calculations, we show that this continuum can serve as a platform for the controlled engineering of disordered wave-manipulating systems.