Research on Shape-Controllable Localized Heating Method Driven by Digital Microfluidics

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-11-08 DOI:10.1021/acs.langmuir.4c03875

Shangru Zhou, Hui Wang, Gaofeng Zhang, Chi Liu, Wanrong Wang, You Liu, Ziyang Ren, Jun Yang, Huai Zheng, Sheng Liu

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Abstract

The localized heating technique, which minimizes high-temperature impact on thermally sensitive components and reduces impurity dispersion during encapsulation, has become a focal point in MEMS packaging research. In this study, we propose a method for localized heating at specific positions and shapes. A localized heating device, based on distributed electric field control, is constructed, where a polymer droplet on the lower substrate electrode is driven into a liquid column under the influence of a distributed electric field generated between two parallel substrate electrodes. ITO substrate electrodes with various patterns are fabricated, ensuring the shape of the formed liquid column matches the pattern. Leveraging the principles of heat transfer, the temperature of the polymer droplet is regulated via a heating stage to enable targeted heating of defined shapes and areas. Experiments delve into the impact of driving parameters on heating time and efficiency, with results affirming the proposed method’s capability to govern localized heating for particular regions and configurations accurately.

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数字微流体驱动的形状可控局部加热方法研究

局部加热技术可最大限度地降低高温对热敏元件的影响，并减少封装过程中的杂质扩散，已成为微机电系统封装研究的一个焦点。在本研究中，我们提出了一种在特定位置和形状上进行局部加热的方法。我们构建了一种基于分布式电场控制的局部加热装置，在两个平行基底电极之间产生的分布式电场的影响下，下基底电极上的聚合物液滴被驱动进入液柱。制作了具有各种图案的 ITO 基底电极，确保形成的液柱形状与图案相匹配。利用热传导原理，聚合物液滴的温度可通过一个加热级进行调节，从而对确定的形状和区域进行有针对性的加热。实验深入研究了驱动参数对加热时间和效率的影响，结果证实了所提出的方法能够准确控制特定区域和配置的局部加热。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).