Massive Electro-Microfluidic Particle Assembly Patterns in Droplet Array for Information Encoding,Small

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Massive Electro-Microfluidic Particle Assembly Patterns in Droplet Array for Information Encoding
Small ( IF 13.0 ) Pub Date : 2024-09-06 , DOI: 10.1002/smll.202405161
Haoqiang Feng ₁ , Shitao Shen ₁ , Mingliang Jin _{1,

2} , Mengjie Xiao ₁ , Mengjun Liu ₁ , Qilin Zhang ₁ , Hongwei Jiang ₁ , Zichuan Yi ₃ , WenShuai Wu ₄ , Guofu Zhou ₁ , Lingling Shui _{1,

2}

Affiliation

The assembly of colloidal particles into micro-patterns is essential in optics, informatics, and microelectronics. However, it is still a challenge to achieve quick, reversible, and precise assembly patterns within micro-scale spaces like droplets. Hereby, a method is presented that utilizes in-plane dielectrophoresis to precisely manipulate particle assemblies within microscale droplets. The electro–microfluidic particle assembly platform, equipped with ingenious electrode designs, enables the formation of diverse micro-patterns within a droplet array. The tunability, similarity, stability, and reversibility of this platform are demonstrated. The ability to assemble letters, numbers, and Morse code patterns within the droplet array underscores its potential for information encoding. Furthermore, using an example with four addressing electrodes beneath a droplet, 16 distinct pieces of information through electrical stimuli is successfully encoded. This unique capability facilitates the construction of a dynamic electronic token, indicating promising applications in anti-counterfeiting technologies.

中文翻译：

用于信息编码的液滴阵列中的大质量电微流体粒子组装模式

胶体颗粒组装成微图案在光学、信息学和微电子学中是必不可少的。然而，在液滴等微尺度空间内实现快速、可逆和精确的组装模式仍然是一个挑战。因此，提出了一种利用面内介电泳来精确操纵微尺度液滴内的颗粒组件的方法。电微流控颗粒组装平台配备了巧妙的电极设计，能够在液滴阵列中形成不同的微图案。证明了该平台的可调性、相似性、稳定性和可逆性。在液滴数组中组装字母、数字和莫尔斯电码模式的能力强调了它在信息编码方面的潜力。此外，使用液滴下方有四个寻址电极的示例，通过电刺激成功编码了 16 条不同的信息。这种独特的功能有助于构建动态电子令牌，表明在防伪技术方面的应用前景广阔。

更新日期：2024-09-06

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