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Updated: May 15, 2026

Counting Proteins in Single Cells with Addressable Droplet Microarrays

Counting Proteins in Single Cells with Addressable Droplet Microarrays

Published on: July 6, 2018

A novel array-type microdroplet parallel-generation device.

Mengchuang Yin¹, Shengchang Tang¹, Caijie Li¹

¹School of Mechanical Engineering, Guangxi University, Guangxi Provincial, Nanning, 530004, China.

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry

|May 31, 2023

Summary

This summary is machine-generated.

This study introduces a novel, low-cost device for parallel microdroplet generation using fluid inertial force. The system enables precise, non-contact dispensing of nanoliter droplets, avoiding cross-contamination for diverse applications.

Keywords:

Electromagnet actuation Microdispensing Microdroplet arrays Non-contact printing Parallel transfer printing microarray

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Area of Science:

Fluid Dynamics
Microfluidics
Precision Engineering

Background:

Microdroplet generation is crucial for various scientific applications.
Existing methods often face challenges with precision, contamination, or cost.

Purpose of the Study:

To propose and validate an innovative array microdroplet parallel-generation device.
To achieve non-contact, parallel, precision dispensing of nanoliter-sized microdroplet arrays.
To develop a prediction model for on-demand droplet generation.

Main Methods:

Utilized fluid inertial force principle with capillary glass needles.
Employed an electromagnetic actuator for a 9-channel parallel array.
Investigated droplet homogeneity, device stability, voltage amplitude, and nozzle diameter effects.
Developed a regression analysis-based prediction model for droplet size.

Main Results:

Demonstrated successful non-contact parallel precision dispensing of nanoliter microdroplets.
Analyzed the influence of electromagnetic driving voltage and nozzle diameter on droplet generation.
Established device stability and homogeneity of generated droplet arrays.
Developed a predictive model for on-demand droplet generation.

Conclusions:

The designed device offers a novel, low-cost, and modular solution for microdroplet array generation.
The system effectively achieves high precision and low-volume dispensing.
The device shows significant potential for applications requiring precise microdroplet handling.