On-Demand Coalescence and Splitting of Liquid Marbles and Their Bioapplications

Overview

Journal Adv Sci (Weinh)

Specialty Biomedical Engineering

Date 2019 May 28

PMID 31131188

Citations 9

Authors

Ben Wang

Kai Fung Chan

Fengtong Ji

Qianqian Wang

Philip Wai Yan Chiu

Zhiguang Guo

Li Zhang

Affiliations

Soon will be listed here.

Abstract

Coalescence and splitting of liquid marbles (LMs) are critical for the mixture of precise amount precursors and removal of the wastes in the microliter range. Here, the coalescence and splitting of LMs are realized by a simple gravity-driven impact method and the two processes are systematically investigated to obtain the optimal parameters. The formation, coalescence, and splitting of LMs can be realized on-demand with a designed channel box. By selecting the functional channels on the device, gravity-based fusion and splitting of LMs are performed to mix medium/drugs and remove spent culture medium in a precise manner, thus ensuring that the microenvironment of the cells is maintained under optimal conditions. The LM-based 3D stem cell spheroids are demonstrated to possess an approximately threefold of cell viability compared with the conventional spheroid obtained from nonadhesive plates. Delivery of the cell spheroid to a hydrophilic surface results in the in situ respreading of cells and gradual formation of typical 2D cell morphology, which offers the possibility for such spheroid-based stem cell delivery in regenerative medicine.

Citing Articles

Emerging open-channel droplet arrays for biosensing.

Song Y, Wang L, Xu T, Zhang G, Zhang X Natl Sci Rev. 2023; 10(10):nwad106.

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Open millifluidics based on powder-encased channels.

Li X, Pang X, Jiang H, Duan M, Liu H, Yang Z Proc Natl Acad Sci U S A. 2023; 120(28):e2302907120.

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Magnetically Driven Manipulation of Nonmagnetic Liquid Marbles: Billiards with Liquid Marbles.

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The gelatin-based liquid marbles for cell cryopreservation.

Liu M, Chen C, Yu J, Zhang H, Liang L, Guo B Mater Today Bio. 2022; 17:100477.

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Optically controlled coalescence and splitting of femtoliter/picoliter droplets for microreactors.

Wen M, Yao B, Yuan S, Zhang W, Zhang Y, Yang G RSC Adv. 2022; 12(29):18311-18320.

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