王子文,张远明,宋时雨,等.气溶胶微喷射打印柔性应变传感器及性能研究[J].精密成形工程,2023,15(12):210-216.
WANG Zi-wen,ZHANG Yuan-ming,SONG Shi-yu,et al.Aerosol Micro-jet Printing Flexible Strain Sensor and Its Performance[J].Journal of Netshape Forming Engineering,2023,15(12):210-216. |
| 气溶胶微喷射打印柔性应变传感器及性能研究 |
| Aerosol Micro-jet Printing Flexible Strain Sensor and Its Performance |
| 投稿时间：2023-10-19 |
| DOI：10.3969/j.issn.1674-6457.2023.12.025 |
| 中文关键词: 气溶胶 微喷射打印 应变传感器 纳米银墨水 人体运动检测 |
| 英文关键词: aerosol micro-jet printing strain sensor nano silver ink human motion detection |
| 基金项目:山东省自然科学基金(ZR2021ME109);山东省创新能力提升工程资助项目(2022TSGC1340);山东省泰山产业领军人才工程(TSCY20221186) |
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| 中文摘要: |
| 目的 研究气溶胶微喷射打印工艺在制备柔性应变传感器方面的可行性。方法 利用气溶胶微喷射打印工艺不受限于柔性基底且打印定位精度高的优势，通过等离子清洗技术增大PDMS表面附着力，使用纳米银墨水与PDMS基底制作用于人体运动检测的电阻式柔性应变传感器。结果 通过等离子清洗PDMS基底表面，解决了打印过程中柔性应变传感器因PDMS表面纳米银液滴凝聚而产生的不导电问题。探究了气溶胶微喷射打印工艺参数对打印银线宽度的影响规律，发现增大鞘气流量或缩小喷头内径能有效减小打印线宽。利用高精度万用表检测由气溶胶微喷射打印制备的传感器在受力时产生的电信号，测试传感器在无应力状态下导电性良好且稳定，计算出传感器应变在3.5%内且灵敏度可达163.84。将传感器用于人体手指部位的运动监测，证明其具有检测微小信号的能力。结论 气溶胶微喷射打印工艺可用于制备所需要的柔性应变传感器，该传感器在智能穿戴设备方面具有一定应用潜力。 |
| 英文摘要: |
| The work aims to study the feasibility of aerosol micro-jet printing process in preparing flexible strain sensors. Taking the advantage that the aerosol micro-jet printing process is not limited to flexible substrates and has high printing positioning accuracy, plasma cleaning technology was used to increase PDMS surface adhesion, and nano-silver ink and PDMS substrates were used to produce flexible strain sensors for human motion detection. Plasma cleaning was conducted to treat the PDMS substrate surface, which solved the non-conductive problem of the flexible strain sensor caused by the agglomeration of nano-silver droplets on the PDMS surface during printing. The influence of aerosol microjet printing process parameters on the printed silver line width was explored. It was found that increasing the sheath gas flow rate or reducing the inner diameter of the nozzle could effectively reduce the width of the printed line. A high-precision multimeter was used to detect the changes in the electrical signal produced by the sensor prepared by aerosol micro-jet printing when it was stressed. The test sensor showed good conductivity and stability in a stress-free state. It was calculated that the sensor strain range was within 3.5% and its sensitivity could reach 163.84. Finally, the sensor was used to monitor the motion of human finger parts, proving its ability to detect small signals. The test results show that the aerosol micro-jet printing process can be used to prepare the required flexible strain sensor, which has potential application in smart wearable devices. |
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