4D-Printing System for Elastic Magnetic Actuators

Azukizawa, Seiji; Shinoda, Hayato; Tsumori, Fujio

doi:10.1109/memsys.2019.8870639

Cited by 17 publications

(16 citation statements)

References 19 publications

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“…In the 4D printing technique, the programmed multi-materials can morph their shape over a period of time, even after they came out of the printer. Recently, 4D printing of artificial cilia was proposed by Tsumori et al [ 67 ]. The printing system printed out the 3D artificial cilia whose anisotropy could be changed simultaneously.…”

Section: Fabrication Techniques For Artificial Ciliamentioning

confidence: 99%

Microfluidic Applications of Artificial Cilia: Recent Progress, Demonstration, and Future Perspectives

2022

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Artificial cilia-based microfluidics is a promising alternative in lab-on-a-chip applications which provides an efficient way to manipulate fluid flow in a microfluidic environment with high precision. Additionally, it can induce favorable local flows toward practical biomedical applications. The endowment of artificial cilia with their anatomy and capabilities such as mixing, pumping, transporting, and sensing lead to advance next-generation applications including precision medicine, digital nanofluidics, and lab-on-chip systems. This review summarizes the importance and significance of the artificial cilia, delineates the recent progress in artificial cilia-based microfluidics toward microfluidic application, and provides future perspectives. The presented knowledge and insights are envisaged to pave the way for innovative advances for the research communities in miniaturization.

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Section: Fabrication Techniques For Artificial Ciliamentioning

confidence: 99%

Microfluidic Applications of Artificial Cilia: Recent Progress, Demonstration, and Future Perspectives

2022

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“…Several methods have been used for the fabrication of magnetic composite materials, both with, [8][9][10][11][12][19][20][21][22][23][24][25][26][27] and without, 13,[28][29][30][31][32] the use of moulds. The fabrication techniques without moulds, such as 3D or 4D printing 13,[28][29][30][31] and self-organisation of magnetic particles, 32) are convenient, but there are more limitations regarding the applicable materials or the control of product size and structure. With each technique offering unique advantages, moulds are particularly useful when a specific geometry or shape of each pillar is desired.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have been conducted based on pillar arrays having a uniform distribution of magnetic particles, [8][9][10][11][12][13][19][20][21][27][28][29][30][31][32] while there were not as many otherwise. Among the studies on pillar arrays with nonuniform particle distribution, [22][23][24][25][26]33) with the exception of our study, 25,26) none have studied and/or mentioned the characteristics of pillar arrays with magnetic tips to form distinctive patterns under the influence of magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

Active control of surface profile by magnetic micropillar arrays

Gaysornkaew

Tsumori

2021

Jpn. J. Appl. Phys.

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Pillar arrays have been extensively used in science and engineering, with major applications at the micro or nano scale, requiring a control technique that can operate in a small, confined area. In this study, an active control method for the surface profile was developed using elastic micropillar arrays with magnetic tips. Single-, double-, and multiple-magnetic pillar arrays were fabricated from poly(dimethylsiloxane) and carbonyl iron particles using a mould prepared by laser drilling. The pillar behaviour was investigated in static and moving magnetic fields. In a static magnetic field, a single pillar is bent, double pillars are attached to a pair, and multiple pillars form pair and line patterns parallel to the magnetic field direction at a field strength of 55 mT and 85 mT, respectively, for a horizontal magnetic field. In a moving magnetic field, the propagating deformation of pillar arrays could successfully transport an 8 mm diameter plastic bead horizontally across the pillared surface at a speed of 4 mm s−1.

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“…After curing, the chain clusters were fixed in the elastic medium that set magnetic anisotropy. These chain clusters will cause the rotational moment to be parallel to the magnetic flux line under an applied magnetic field [25]. Therefore, we can control overall deformation of a soft actuator by print this magnetic anisotropy in each portion of the printed structure.…”

Section: Introductionmentioning

confidence: 99%

“…In this process, we use 3 design parameters (x, y, z) in fabricating the shape of a structure and 2 more parameters (θ, ψ) in aligning magnetic chain clusters, so we use 5 design parameters (x, y, z, θ, ψ) at the same time, so that the system can be called "5D-printing". In our last report, we proposed this new printing system and demonstrated using commercial UV resin as material [25]; however, the material was not enough flexible. Thus, in this report, we employed more flexible polymeric materials for a larger deformation of a printed structure.…”

Section: Introductionmentioning

confidence: 99%

3D Printing System of Magnetic Anisotropy for Artificial Cilia

Azukizawa

Shinoda

Tokumaru

et al. 2018

J. Photopol. Sci. Technol.

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In this paper, we developed a new 3D-printing system for magnetic elastomer, and demonstrated to fabricate artificial cilia. Natural cilia are hair-like organ found in nature. They are effective fluidic system in the natural world that are widely observed on surfaces of microorganisms of creatures, such as Paramecium and throat surface of mammals. Recently, the motion of cilia has been analyzed and mimicked for developing soft actuator, for example, some studies on artificial cilia driven magnetically have been reported. They are small soft actuators, and there are various manufacturing methods for these actuators depending on materials and products. Among them, authors have already developed the concept of a printing system that not only forms a three-dimensional object but also prints out the deformation of the structure. This system can fabricate various shapes of soft actuators without any assembly. In this report, we utilized UV-curable urethane acrylate as a more flexible material than that used in the previous reports, and fabricated artificial cilia by the printer. We set magnetic anisotropy to each cilium and mimicked a metachronal wave, sequential action of plural cilia that causes effective flow.

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4D-Printing System for Elastic Magnetic Actuators

Cited by 17 publications

References 19 publications

Microfluidic Applications of Artificial Cilia: Recent Progress, Demonstration, and Future Perspectives

Microfluidic Applications of Artificial Cilia: Recent Progress, Demonstration, and Future Perspectives

Active control of surface profile by magnetic micropillar arrays

3D Printing System of Magnetic Anisotropy for Artificial Cilia

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