Development of a Piezo-Driven Liquid Jet Dispenser with Hinge-Lever Amplification Mechanism

Trimzi, Mojiz Abbas; Ham, Young-Bog; An, Byeung Cheol; Choi, Young; Park, Jung Ho; Yun, So-Nam

doi:10.3390/mi11020117

Cited by 12 publications

(7 citation statements)

References 42 publications

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“…The actuator exhibits rapid response and high efficiency [89]. However, the piezo-stack actuator does not produce adequate output displacement for fluid jetting; therefore, a displacement amplification mechanism, i.e., a mechanical amplifier (e.g., a lever) was adopted for the needle and actuator [90]. The two types of actuators are single [91] and dual [92] piezo-stack actuators.…”

Section: Needle-based Printingmentioning

confidence: 99%

Classifications and Applications of Inkjet Printing Technology: A Review

et al. 2021

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Inkjet printing technology uses the low-cost direct deposition manufacturing technique for printing and is applicable in various fields including optics, ceramics, three-dimensional printing in biomedicine, and conductive circuitry. This study reviews the classifications and applications of inkjet printing technologies, with a focus on recent publications. The different design approaches, applications, and research progress of several inkjet printing techniques are reviewed. Among them, the piezoelectric inkjet printing technology is the main focus owing to its reliability and handling of a diverse range of inks. A piezo-driven inkjet printhead is activated by applying a voltage waveform to a piezoelectric membrane. The waveform ensures the formation of the designed droplet and a stable jet. A survey of various drivingvoltage waveforms is conducted, which can serve as a reference to the research community that uses piezodriven inkjet printheads. The challenges of printing quality, stability, and speed and their solutions as published in recent studies are reviewed. Technologies for producing high-viscosity inkjets are explored, and the applications of inkjet printing technology in textile, displays, and wearable devices are discussed.

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Section: Needle-based Printingmentioning

confidence: 99%

Classifications and Applications of Inkjet Printing Technology: A Review

et al. 2021

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“…Piezoelectric materials play an important role in the field of flexible electronics [ 1 , 2 , 3 , 4 ], precision engineering [ 5 , 6 , 7 ], and microelectronics packaging [ 8 , 9 , 10 , 11 ]. Piezoelectric materials can deform under the action of electrical flow, which is called piezoelectric effect [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Hybrid Displacement Amplifier Supporting a High-Performance Piezo Jet Dispenser

Zhou

Yan

2023

Micromachines

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In this study, a compliant amplifier powered by a piezoelectric stack is designed to meet high−performance dispensing operation requirements. By studying the issue of low frequency bandwidth on the traditional bridge−type amplifier mechanism, we propose a displacement amplifier mechanism, hybrid bridge−lever−bridge (HBLB), that enhances its dynamic performance by combining the traditional bridge−type and lever mechanism. A guiding beam is added to further improve its output stiffness with a guaranteed large amplification ratio. An analytical model has been developed to describe the full elastic deformation behavior of the HBLB mechanism that considers the lateral displacement loss of the input end, followed by a verification through a finite element analysis (FEA). Results revealed that the working principle of the HBLB optimizes the structural parameters using the finite element method. Finally, a prototype of the displacement amplifier was fabricated for performance tests. Static and dynamic test results revealed that the proposed mechanism can reach a travel range of 223.2 μm, and the frequency bandwidth is 1.184 kHz, which meets the requirements of a high−performance piezo jet dispenser.

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“…Continuous streams of developments in the field of printing technology were performed by the researchers over the past few decades. Several methods i.e., needle-based printing [ 1 ], Acoustophoretic printing [ 2 ], piezoelectric and thermal inkjet printheads-based printing [ 3 , 4 ], electrohydordyanic jet printing [ 5 ], laser-based printing [ 6 ], surface acoustic waves printing [ 7 ] and drop impact printing [ 8 ] have been demonstrated in the literature to get the ultimate goal of precise printing on its challenging pathway. Among these methods, piezoelectric inkjet prinheads based printing are commonly used due to its advantage of allowing precisely controlled drop volume by varying the actuating voltage waveform applied to the piezoelectric membrane.…”

Section: Introductionmentioning

confidence: 99%

Actuating Voltage Waveform Optimization of Piezoelectric Inkjet Printhead for Suppression of Residual Vibrations

Shah

Lee

et al. 2020

Micromachines

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After a piezoelectric inkjet printhead jets the first droplet, the actuating membrane still vibrates, creating residual vibrations in the ink channel, which can degrade the inkjet printhead performance. For suppressing these vibrations, an optimized actuating voltage waveform with two pulses must be obtained, of which the first pulse is used for jetting and the second pulse is used to suppress the residual vibrations. In this study, the pressure history within the ink channel of a recirculating piezoelectric inkjet printhead was first acquired using lumped element modeling. Then, for suppressing residual vibrations, a bipolar voltage waveform was optimized via analysis of the tuning time (tt ), dwell time (td2), rising time (tr2), falling time (tf2), and voltage amplitude of the second pulse. Two voltage waveforms, Waveform 01 and Waveform 02, were optimized thereafter. In Waveform 01, tt=2 μs, td2=2 μs, and tr2 and tf2=1 μs were finalized as the optimal parameters; in the case of another waveform, the optimal parameters of td2, tr2, and tf2 were found to be 4, 1, and 1 μs, respectively. The optimal voltage amplitude of the second pulse was found to be 1/3 the amplitude of the first pulse. On the basis of our analysis, the tuning time in Waveform 01 is the most sensitive parameter, and the performance yielded is even poorer than that yielded by standard waveform, if not optimized. Therefore, the other waveform is recommended for the suppression of residual vibrations.

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Development of a Piezo-Driven Liquid Jet Dispenser with Hinge-Lever Amplification Mechanism

Cited by 12 publications

References 42 publications

Classifications and Applications of Inkjet Printing Technology: A Review

Classifications and Applications of Inkjet Printing Technology: A Review

Design and Analysis of a Hybrid Displacement Amplifier Supporting a High-Performance Piezo Jet Dispenser

Actuating Voltage Waveform Optimization of Piezoelectric Inkjet Printhead for Suppression of Residual Vibrations

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