Efficient and Robust Fabrication of Soft Sensors via Injection With Auxiliary Suction in Multilayered Microchannels With a Liquid Metal Alloy

IF 4.3 2区 综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Hyungseok Yoon;Seung-Won Kim
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引用次数: 0

Abstract

From 2011 to August 2024, 795 papers have utilized liquid metals like eutectic gallium-indium alloy (EGaIn) or Galinstan in microfluidic systems, flexible electronics, and soft robotics, as reported in the Scopus database. The most common manufacturing techniques include manual needle injection, stencil printing, direct writing, and vacuum filling, with manual needle injection being the most prevalent due to its simplicity and cost-effectiveness. However, this method often results in high failure rates and inconsistent outcomes due to manual variability. Other techniques also present challenges, such as high setup costs and limitations based on material stiffness. To address these issues, a needle injection with an auxiliary suction method has been introduced. This approach enhances manufacturing success and consistency, especially in multilayered microchannel structures with varying material stiffness. The incorporation of auxiliary suction reduces fabrication time by 25.3% and decreases pressure on the microfluidic channels by 10.3%, leading to more stable and reliable production of multilayered microchannel soft sensors. This method is expected to significantly advance liquid metal-based applications by providing a more efficient, affordable, and reliable fabrication process.
基于液态金属合金的多层微通道辅助吸入注射软传感器的高效鲁棒制造
据Scopus数据库报道,从2011年到2024年8月,有795篇论文在微流体系统、柔性电子和软机器人中使用了共晶镓铟合金(EGaIn)或Galinstan等液态金属。最常见的制造技术包括手工针注射、模板印刷、直接书写和真空填充,其中手工针注射因其简单和成本效益而最普遍。然而,这种方法往往导致高故障率和不一致的结果,由于人工可变性。其他技术也面临挑战,例如高设置成本和基于材料刚度的限制。为了解决这些问题,引入了一种辅助抽吸的针注射方法。这种方法提高了制造的成功率和一致性,特别是在具有不同材料刚度的多层微通道结构中。辅助吸力的加入使制造时间缩短了25.3%,微流体通道上的压力降低了10.3%,从而使多层微通道软传感器的生产更加稳定可靠。该方法有望通过提供更高效、更经济、更可靠的制造工艺,显著推进液态金属的应用。
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来源期刊
IEEE Sensors Journal
IEEE Sensors Journal 工程技术-工程:电子与电气
CiteScore
7.70
自引率
14.00%
发文量
2058
审稿时长
5.2 months
期刊介绍: The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice
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