access icon free AM of three-dimensional spongy microstructures for a piezoelectric sprayer

Additive manufacturing (AM) of spongy (cancellous) microstructures in the development and application of piezoelectric sprayers was investigated. The structures featuring microfluidic channels were made of solid polylactic acid (PLA) by fused deposition modelling (FDM) designed with a width of 35 mm, a depth of 25 mm, a height of 56 mm, and a cross-layer thickness of 2 mm. In total nine network structures were altered with the line widths (W d) from 300 to 500 μm and the line spacing (S d) from 250 to 400 μm. Then, one piezoelectric plate and another micronozzle array were assembled with the structures as a microactuator. The piezoelectric actuator had a resonance frequency of 107.8 ± 1 kHz, in which it generated microsprays of 3 ml water with a typical volumetric rate of ∼1.1 ml/min. On the basis of FDM with PLA, the works’ dimensional error analysis showed that the minimum AM errors (<5%) between the design and actual dimensions occurred with the W d of 350 μm and the S d of 300–350 μm. In addition, they experimentally discovered anisotropic wettability and different roughness of the PLA layered surfaces, largely concerning the microfluidic performance of the network structures of the piezoelectric sprayer.

Inspec keywords: piezoelectric actuators; microactuators; rapid prototyping (industrial); assembling; three-dimensional printing; nozzles; organic compounds; microfluidics

Other keywords: size 56.0 mm; FDM; size 350 mum; PLA; solid polylactic acid; piezoelectric actuator; dimensional error analysis; AM; piezoelectric sprayer; microfluidic channels; anisotropic wettability; fused deposition modelling; piezoelectric plate; three-dimensional spongy microstructures; size 25.0 mm; network structures; additive manufacturing; micronozzle array assembling; size 2.0 mm; distance 250 mum to 400 mum; size 35.0 mm; microactuator

Subjects: Microassembly techniques; MEMS and NEMS device technology; Piezoelectric devices

References

    1. 1)
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
      • 33. Whirl Best Int. Com. Available at http://www.whbest.com.tw, accessed 5 July 2018.
    7. 7)
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
      • 11. Ventola, C.L.: ‘Medical applications for 3D printing: current and projected uses’, Pharm. Ther., 2014, 39, pp. 704711.
    13. 13)
    14. 14)
      • 36. Su, W., Wu, Z., Fang, Y., et al: ‘3D printed wearable flexible SIW and microfluidics sensors for Internet of things and smart health applications’. IEEE MTT-S Int. Microwave Symp. (IMS), HI, USA, 2017.
    15. 15)
    16. 16)
    17. 17)
    18. 18)
    19. 19)
    20. 20)
    21. 21)
    22. 22)
    23. 23)
    24. 24)
    25. 25)
    26. 26)
    27. 27)
      • 5. Chen, C.T.: ‘Generation and evaporation of microsprays’, inYu, X.Y. (Ed.): ‘Advances in microfluidics – new applications in biology, energy, and materials sciences’ (InTech, Rijeka, Croatia, 2016), pp. 315334.
    28. 28)
      • 4. Chen, C.T.: ‘Inkjet printing of microcomponents: theory, design, characteristics, and applications’, inKamanina, N. (Ed.): ‘Features of liquid crystal display materials and processes’ (InTech, Rijeka, Croatia, 2011), pp. 4360.
    29. 29)
    30. 30)
      • 1. Higuma, M., Ikeda, M., Sugama, S., et al: ‘Ink filling method and apparatus for ink cartridge’. Patent No. 5790157, USA, 1998.
    31. 31)
    32. 32)
    33. 33)
      • 2. Yu, N.C.: ‘Atomizing sprayer’. Patent Pub. No. 2015/0231660 A1, USA, 2015.
    34. 34)
      • 12. Crump, S.S.: ‘Apparatus and method for creating three-dimensional objects’. Patent No. 5121329, USA, 1992.
    35. 35)
    36. 36)
    37. 37)
      • 34. Zhong, X., Lam, S.: ‘Perpetual-operation frequency response and equivalent circuit modeling of piezoelectric ultrasonic atomizer devices’. IEEE Int. Ultrasonics Symp. (IUS), Taipei, Taiwan, 2015.
    38. 38)
    39. 39)
      • 8. Chen, C.T.: ‘Microfabrication processes and applications of liquid photosensitive materials’, inTiwari, A., Polykarpov, A. (Eds.): ‘Photocured materials’ (RSC, Cambridge, UK, 2015), pp. 103120.
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