Related Experiment Video
Updated: Aug 6, 2026
07:19
Fabrication of a Multiplexed Artificial Cellular MicroEnvironment Array
Published on: September 7, 2018
High-throughput microwell array integrated with track-etched membrane for fed-batch cell culture and assay
Janghyun Ju1,2, Zuwei Xie3, Jintao Liu3
1Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-Gil, Ulsan 44919, Republic of Korea. tskim@unist.ac.kr.
The Analyst
|July 22, 2026
Summary
This study introduces a novel dual-sided microwell array with a nanopore membrane for improved bacterial culture. This system enables sustained bacterial growth and targeted sample retrieval, overcoming limitations of traditional batch culture methods.
Area of Science:
- Microfluidics
- Biotechnology
- Microbial Culturing
Background:
- Microwell arrays are used for microbial screening but are limited by batch culture conditions.
- Nutrient depletion and waste accumulation in batch cultures restrict bacterial growth and analysis.
Purpose of the Study:
- To develop a microwell array system for sustained fed-batch bacterial culture.
- To enable controlled mass transport and targeted extraction from individual wells.
Main Methods:
- A dual-sided microwell array integrated with a track-etched polyester (PETE) nanopore membrane was designed.
- Vertically aligned nanopores facilitated diffusion-driven exchange for nutrient replenishment and waste dilution.
- Localized needle-assisted puncturing enabled targeted retrieval of well contents.
Main Results:
- Fed-batch mode sustained bacterial proliferation for up to 30 hours, achieving a tenfold population increase.
- Batch mode cultures showed growth arrest within 10 hours.
- The PETE membrane acted as a seal for selective sample recovery.
Conclusions:
- The developed platform supports scalable fed-batch culture at the microscale.
- It offers a practical strategy for high-throughput bacterial growth studies and targeted sample recovery.
