Droplet Oscillation as an Arbitrary Waveform Generator

Langmuir : the ACS Journal of Surfaces and Colloids
Kyle YuYi Y Zuo

Abstract

Oscillating droplets and bubbles have been developed into a novel experimental platform for a wide range of analytical and biological applications, such as digital microfluidics, thin film, biophysical simulation, and interfacial rheology. A central effort of developing any droplet-based experimental platform is to increase the effectiveness and accuracy of droplet oscillations. Here, we developed a novel system of droplet-based arbitrary waveform generator (AWG) for feedback-controlling single-droplet oscillations. This AWG was developed through closed-loop axisymmetric drop shape analysis and based on the hardware of constrained drop surfactometry. We have demonstrated the capacity of this AWG in oscillating the volume and surface area of a millimeter-sized droplet to follow four representative waveforms, sine, triangle, square, and sawtooth. The capacity of oscillating the surface area of a droplet across the frequency spectrum makes the AWG an ideal tool for studying interfacial rheology. The AWG was used to determine the surface dilational modulus of a commonly studied nonionic surfactant, dodecyldimethylphosphine oxide. The droplet-based AWG developed in this study is expected to achieve accuracy, versatility, and applica...Continue Reading

References

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Jan 26, 2016·ACS Applied Materials & Interfaces·Jinan DengJiyu Fang
May 3, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Kyle YuYi Y Zuo
Aug 10, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Jinlong YangYi Y Zuo
Feb 28, 2018·Biomaterials Science·Chen LiPeng Yang

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Citations

Nov 24, 2018·Journal of Colloid and Interface Science·Jinlong YangYi Y Zuo
Jul 24, 2020·Biophysical Journal·Lu XuYi Y Zuo
Jun 11, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Guangle LiYi Y Zuo
Jul 2, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Nicolas Abi ChebelFrédéric Risso
Jul 4, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Lu Xu, Yi Y Zuo

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