期刊
SMALL
卷 16, 期 46, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202003797
关键词
biofluidics; hydrogels; microfluidic chips
类别
资金
- National Key Research and Development Program of China [2018YFA0703000]
- National Nature Science Foundation of China [U1609207]
- Science Fund for Creative Research Groups of National Natural Science Foundation of China [51521064]
The integration of microfluidics with biomedical research is confronted with considerable limitations due to its body materials. With high content of water, hydrogels own superior biocompatibility and degradability. Can hydrogels become another material choice for the construction of microfluidic chips, particularly biofluidics? The present review aims to systematically establish the concept of hydrogel-based microfluidic chips (HMCs) and address three main concerns: i) why choosing hydrogels? ii) how to fabricate HMCs?, and iii) in which fields to apply HMCs? It is envisioned that hydrogels may be used increasingly as substitute for traditional materials and gradually act as the body material for microfluidic chips. The modifications of conventional process are highlighted to overcome issues arising from the incompatibility between the construction methods and hydrogel materials. Specifically targeting at the soft and wet hydrogels, an efficient flowchart of i) high resolution template printing; ii) damage-free demolding; iii) twice-crosslinking bonding is proposed. Accordingly, a broader microfluidic chip concept is proposed in terms of form and function. Potential biomedical applications of HMCs are discussed. This review also highlights the challenges arising from the material replacement, as well as the future directions of the proposed concept. Finally, the authors ' viewpoints and perspectives for this emerging field are discussed.
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