UV LED Assisted Printing Platform for Fabrication of Micro-Scale Polymer Pillars

Qiu, Xing; Lo, Jeffery C. C.; Cheng, Yuanjie; Lee, S. W. Ricky; Tseng, Yong Jhe; Hung, Kuan-Yi; Chiu, Peter

doi:10.1109/jmems.2020.3025564

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…The LEDs light is used to provide instant curing of the polymer and the lenses to focus the light beam more effectively. Polymer pillars with 20 µm diameter were built with this technique by achieving 16 • light beam angle and 100 ms/pillar velocity including the curing [146].…”

Section: Multi Jet Modelling (Mjm)mentioning

confidence: 99%

Additive Manufacturing of Micro-Electro-Mechanical Systems (MEMS)

Pasquale

2021

Micromachines

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Recently, additive manufacturing (AM) processes applied to the micrometer range are subjected to intense development motivated by the influence of the consolidated methods for the macroscale and by the attraction for digital design and freeform fabrication. The integration of AM with the other steps of conventional micro-electro-mechanical systems (MEMS) fabrication processes is still in progress and, furthermore, the development of dedicated design methods for this field is under development. The large variety of AM processes and materials is leading to an abundance of documentation about process attempts, setup details, and case studies. However, the fast and multi-technological development of AM methods for microstructures will require organized analysis of the specific and comparative advantages, constraints, and limitations of the processes. The goal of this paper is to provide an up-to-date overall view on the AM processes at the microscale and also to organize and disambiguate the related performances, capabilities, and resolutions.

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Section: Multi Jet Modelling (Mjm)mentioning

confidence: 99%

Additive Manufacturing of Micro-Electro-Mechanical Systems (MEMS)

Pasquale

2021

Micromachines

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“…Upon printing the matrix, stacking was observed in the areas where the cure intensity was high and the print speed was very low, resulting in rapid and thorough curing with large linewidths and overlap ratios. Although many interesting approaches for the synthesis of 2D/3D structures have been presented, such as the graphene-based nanostructures shown in [12], the aerosol-jet printed dielectric structures reported to date have been either traditional horizontal/2D features, purely vertical or columnar stacked structures, or angular structures printed ex situ and/or requiring vertical support [13][14][15][16][17][18][19][20]. The material properties and printing conditions discussed herein enable both horizontal and vertical stacking of the overlapping lines in situ, that is, directly on the intended substrate without the need for supporting structures.…”

Section: Introductionmentioning

confidence: 99%

A new technique for 3D printing dielectric structures using aerosol-jettable photopolymers

Areias

Piro

Ranasingha

et al. 2023

Flex. Print. Electron.

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In this article, we report the development of a new method for 3D printing of dielectrics. An aerosol jet printer was used to deposit overlapping layers of photopolymer material under ultraviolet (UV) floodlight in the assembly of ramping microstructures in situ without the need for supporting structures. Printing is conducted using an in-house photodielectric ink, the development of which is presented with an emphasis on dielectric and mechanical bulk material characterization. Low dielectric loss at the X-band and structural strength are demonstrated, followed by print characterization wherein the driving mechanisms of the new method are explored, tied to print conditions, and related to specific material properties. Finally, a complex structure in the form of a 3D flower is printed to demonstrate the controlled and repeatable performance of the proposed technique.

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“…With the coming of a new era in additive manufacturing [ 12 , 13 , 14 , 15 , 16 ], 3D printing provides convenience and design flexibility to the fabrication of microfluidic interconnections. These 3D-printed connectors can be either simultaneously printed fluid ports on 3D-printed microfluidic chips [ 17 , 18 ] or separated adapters fixed on microfluidic devices [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Evaluation of 3D-Printed Connectors for Microfluidics

Lee

2021

Micromachines

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3D printing is regarded as a useful tool for the fabrication of microfluidic connectors to overcome the challenges of time consumption, clogging, poor alignment and bulky fixtures existing for current interconnections. 3D-printed connectors without any additional components can be directly printed to substrate with an orifice by UV-assisted coaxial printing. This paper further characterized and evaluated 3D-printed connectors fabricated by the proposed method. A process window with an operable combination of flow rates was identified. The outer flow rate could control the inner channel dimensions of 3D-printed connectors, which were expected to achieve less geometric mismatch of flow paths in microfluidic interfaces. The achieved smallest inner channel diameter was around 120 µm. Furthermore, the withstood pressure of 3D-printed connectors was evaluated to exceed 450 kPa, which could enable microfluidic chips to work at normal pressure.

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UV LED Assisted Printing Platform for Fabrication of Micro-Scale Polymer Pillars

Cited by 6 publications

References 18 publications

Additive Manufacturing of Micro-Electro-Mechanical Systems (MEMS)

Additive Manufacturing of Micro-Electro-Mechanical Systems (MEMS)

A new technique for 3D printing dielectric structures using aerosol-jettable photopolymers

Characterization and Evaluation of 3D-Printed Connectors for Microfluidics

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