Geometry modulation of microlens array using spin coating and evaporation processes of photoresist mixture

Kim, Suho; Yeo, Eunju; Kim, Jeong Hwan; Yoo, Yeong-Eun; Choi, Doo-Sun; Yoon, Jae Sung

doi:10.1007/s40684-015-0027-6

Cited by 5 publications

(1 citation statement)

References 28 publications

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“…This method still has some problems about the positioning accuracy for manual procedures, which can be solved by instruments and automation techniques for mass production. 3D structures in microfluidic channels grow in importance as approaches to control flow [ 49 , 50 ], produce microlens arrays [ 51 ], produce 3D cell culture systems and mimic organs [ 52 , 53 , 54 , 55 ], and develop multifactor separation [ 56 ]. Our fabrication method can meet the requirements of new 3D structures in a lab scale and allow for the commercialization of previously studied prototype devices.…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Fabrication for Microfluidics by Conventional Techniques and Equipment Used in Mass Production

et al. 2016

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This paper presents a simple three-dimensional (3D) fabrication method based on soft lithography techniques and laminated object manufacturing. The method can create 3D structures that have undercuts with general machines for mass production and laboratory scale prototyping. The minimum layer thickness of the method is at least 4 µm and bonding strength between layers is over 330 kPa. The performance reaches conventional fabrication techniques used for two-dimensionally (2D)-designed microfluidic devices. We fabricated some 3D structures, i.e., fractal structures, spiral structures, and a channel-in-channel structure, in microfluidic channels and demonstrated 3D microfluidics. The fabrication method can be achieved with a simple black light for bio-molecule detection; thus, it is useful for not only lab-scale rapid prototyping, but also for commercial manufacturing.

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