3D micro fractal pipettes for capillary based robotic liquid handling

Decanini, D.; Harouri, A.; Mita, Yoshio; Kim, Beomjoon; Hwang, Gilgueng

doi:10.1063/5.0018456

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…They can also be used as wireless in-vitro microfluidic manipulators for mechanical force sensing [2,3], rheological sensing [4] or as in-vitro fertilization systems [5,6]. Recent progress on the mobile micro devices showed their great potentials either to the solid sample transport [7] or to the liquid sample handling [8]. However their manufacturing complexities and fragilities do not guarantee the sustainable motions in between multi-phase (liquid/air) environments.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized Soft Transformable Swimmer for Evironmentally Friendly and Sustainable Fluidic Carrier

Hwang

Kim

Toyokura

et al. 2021

2021 Symposium on Design, Test, Integration &Amp; Packaging of MEMS and MOEMS (DTIP)

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We developed a magnetically actuated soft transformable microswimmer for an environmentally friendly and sustainable fluidic handling. They are made of the composite mixture of magnetic micro particles and soft UV curable resin. The custom developed manufacturing system allows to program the local magnetizations of each fractional areas with UV light exposure for both the bending motion by magnetic field and the surface microstructuring to minimize surface stiction. The manufacturable device scale ranges from the smallest of 385×702 µm 2 to the largest 2.0×5.5 mm 2 . We demonstrated successful liquid sample handling between droplets or hydrogel substrates showing a great potential to serve as a fluidic carrier for biochemical sample analysis or drug delivery.

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Section: Introductionmentioning

confidence: 99%

Miniaturized Soft Transformable Swimmer for Evironmentally Friendly and Sustainable Fluidic Carrier

Hwang

Kim

Toyokura

et al. 2021

2021 Symposium on Design, Test, Integration &Amp; Packaging of MEMS and MOEMS (DTIP)

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Simulation of metal microcomponents picking up by electrochemical based on ABAQUS

Wang

et al. 2021

Mod. Phys. Lett. B

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The development of micromanipulation technology has an important impact on the research in the microfield, which mainly focuses on the preparation and assembly of microcomponents, in which the microcomponent picking technology is used. The existing picking methods mainly use manipulation tools to clamp or adsorb components, which may destroy or fail to pick objects in the process of manipulation, and the efficiency is relatively low. In order to solve the problems in the existing manipulation methods, a new metal microcomponent picking method based on electrochemistry is proposed, which mainly uses the electrochemical principle to produce metal deposition, connect the manipulation tool and the object, and indirectly control the object by moving the manipulation tool. In this paper, the simulation software ABAQUS is used to pick up the microcopper wires with the length of 100, 200 and 300 [Formula: see text]m by using a pipette with a nozzle diameter of 15 [Formula: see text]m. The force curve between the tool and the object during the manipulation process is obtained. The feasibility of the method is verified by theoretical analysis and simulation experiments.

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Shrinkage-Considered Mold Design for Improvement of Micro/Nano-Structured Optical Element Performance

Kim

Kwak

2020

Micromachines

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Polymer shrinkage in nano-imprint lithography (NIL) is one of the critical issues that must be considered in order to produce a quality product. Especially, this condition should be considered during the manufacture of optical elements, because micro/nano-structured optical elements should be controlled to fit the desired shape in order to achieve the intended optical performance. In this paper, during NIL, we characterized the shrinkage of polymeric resin on micro lens array (MLA), which is one of the representative micro/nano-structured optical elements. The curvature shape and optical performance of MLA were measured to check the shrinkage tendency during the process. The master mold of MLA was generated by the two-photon polymerization (2PP) additive manufacturing method, and the tested samples were replicated from the master mold with NIL. Several types of resin were adjusted to prepare the specimens, and the shrinkage effects in each case were compared. The shrinkage showed different trends based on the NIL materials and MLA shapes. These characterizations can be applied to compensate for the MLA design, and the desired performance of MLA products can be achieved with a corrected master mold.

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3D micro fractal pipettes for capillary based robotic liquid handling

Cited by 3 publications

References 10 publications

Miniaturized Soft Transformable Swimmer for Evironmentally Friendly and Sustainable Fluidic Carrier

Miniaturized Soft Transformable Swimmer for Evironmentally Friendly and Sustainable Fluidic Carrier

Simulation of metal microcomponents picking up by electrochemical based on ABAQUS

Shrinkage-Considered Mold Design for Improvement of Micro/Nano-Structured Optical Element Performance

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