Pattern formation in thin polymeric films <i>via</i> electrohydrodynamic patterning

Lv, Guowei; Tian, Hongmiao; Shao, Jinyou; Yu, Demei

doi:10.1039/d2ra01109c

Cited by 5 publications

(2 citation statements)

References 136 publications

(201 reference statements)

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“…These adapting techniques on controllable polymer micropatterns provide advanced fabrication tools with high-precision capabilities but need sophisticated and costly processes and equipment. Since that electrowetting manipulation and movement/deformation of liquids can be driven only through the change or adjustment of the electrical signals, it exhibits very extraordinary high research value and attracts much research interest. − It was discovered that dielectric liquid is unstable in the electric field generated by two parallel electrodes for a long time. , Dielectric liquid can be pulled into the air gap of two parallel electrodes when a voltage is applied to both electrodes. − A large number of scholars have studied the use of this phenomenon to liquid films unstable and have prepared various polymer array microstructures, such as some circular arrays . Hwang et al fabricate periodic line microstructures at the submicron scale. , Vespini et al produced various microlens arrays .…”

Section: Introductionmentioning

confidence: 99%

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Study on the Formation and Controllable Movement of Polymer Liquid Columns Based on Dynamic Control of Spatial Electric Field Distribution

Zhou,

Ren,

Tan

et al. 2023

Langmuir

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Liquid deformation and motion are very common natural phenomena and of great value in various practical applications. In this study, a dielectric fluid column formation and directional flow phenomenon are presented. Dielectric fluid can grow upward to form a liquid column through a spatial electric field and realize directional and controllable operation of the liquid column by regulating spatial electric field distribution. First, the adjustable electric field space is constructed by connecting the two parallel electrodes to the high-voltage DC power supply. Then, the regional electric field distribution was adjusted by the upper plate graphic and power supply regulation to drive the polymer liquid on the lower plate electrode to form a liquid column at different positions. The results show that the polymer liquid column can be driven by the spatial electric field distributed dynamic control method and that the height and the narrowest width of the liquid column are directly controlled by the voltage. With the experiment conditions that the distance between two parallel electrodes is 5−15 mm, the formation of liquid columns with a height of 5−15 mm can be controlled. In addition, the liquid column can be driven by adjusting the on-states of different conductive regions. When the voltage is 10 kV, the liquid column directional movement speed can reach 1 mm/s. The higher the voltage, the faster the directional movement. The research results can be used as producing polydimethylsiloxane stamp, localized heating and temperature control, fabricating a pulsating heat pipe, and so on.

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Section: Introductionmentioning

confidence: 99%

“…13−15 A large number of scholars have studied the use of this phenomenon to liquid films unstable and have prepared various polymer array microstructures, such as some circular arrays. 16 Hwang et al fabricate periodic line microstructures at the submicron scale. 17,18 Vespini et al produced various microlens arrays.…”

Section: ■ Introductionmentioning

confidence: 99%

Study on the Formation and Controllable Movement of Polymer Liquid Columns Based on Dynamic Control of Spatial Electric Field Distribution

Zhou,

Ren,

Tan

et al. 2023

Langmuir

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Rapid In‐Plane Pattern Growth for Large‐Area Inverse Replication Through Electrohydrodynamic Instability of Polymer Films

Park,

Hwang,

Chae

et al. 2024

Small

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Nanopatterning driven by electrohydrodynamic (EHD) instability can aid in the resolution of the drawbacks inherent in conventional imprinting or other molding methods. This is because EHD force negates the requirement of physical contact and is easily tuned. However, its potential has not examined owing to the limited size of the pattern replica (several to tens of micrometers). Thus, this study proposes a new route for large‐area patterning through high‐speed evolution of EHD‐driven pattern growth along the in‐plane axis. Through the acceleration of the in‐plane growth, while selectively controlling a specific edge growth, the pattern replica area can be extended from the micro‐ to centimeter scale with high fidelity. Moreover, even in the case of nonuniform contact mode, the proposed rapid in‐plane growth mode facilitates uniform large‐scale replication, which is not possible in conventional imprinting or other molding methods.

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Rayleigh–Taylor instability in an arbitrary direction electrostatic field

Yao,

Cao

2024

Physica D: Nonlinear Phenomena

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Pattern formation in thin polymeric films via electrohydrodynamic patterning

Abstract: A review about electrohydrodynamic patterning (EHDP), including origin, theoretical and numerical studies, pattern formation process, fabrication of hierarchical structures, aligning and ordering of the anisotropic polymers and perspective.

Cited by 5 publications

References 136 publications

Study on the Formation and Controllable Movement of Polymer Liquid Columns Based on Dynamic Control of Spatial Electric Field Distribution

Study on the Formation and Controllable Movement of Polymer Liquid Columns Based on Dynamic Control of Spatial Electric Field Distribution

Rapid In‐Plane Pattern Growth for Large‐Area Inverse Replication Through Electrohydrodynamic Instability of Polymer Films

Rayleigh–Taylor instability in an arbitrary direction electrostatic field

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