Novel multi-way microvalve with ease of fabrication and integration for microfluidics application

SENSORS AND ACTUATORS B-CHEMICAL

卷:286

Article

Tang, Shao Qiang¹  Li, King Ho Holden¹  Lee, Sheung Jien¹  Zeng, Jiamin Jasmine²  Ng, Sum Huan² 

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, 50 Nanyang Ave, Singapore 639798, Singapore

[2] ASTAR, Singapore Inst Mfg Technol SIMTech, 2 Fusionopolis Way,08-04, Innovis 13863, Singapore

关键词: Microvalve;    Multi-way valve;    Zero dead-volume;    Small sweep-volume;   

DOI  :  10.1016/j.snb.2018.10.118

来源: Elsevier

【 摘 要 】

We present a miniaturized active multi-way microvalve, with a rotor, measuring only 3.7 mm in diameter and having a footprint of only about 14 mm(2), and that is designed for integration into microfluidics chips, allowing for overall size reduction for microfluidics platforms. It has a zero dead volume, and an overall internal volume of only 268 nL. Its operation is based on a rotary mechanism, with compressible rotor and complementary stator seat valve specially designed to have five-degree rotational symmetry, and in which the rotor is made of Viton elastomer to provide a seal and switch between outlets precisely. The microvalve, which can be manually, as well as automatically actuated, is able to withstand pressures up to 370 kPa with no leakage and has a switching torque of under 0.03 Nm.

【 授权许可】

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