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Laser-Induced Graphene on a Quartz Crystal Microbalance for Humidity Sensing
| Content Provider | MDPI |
|---|---|
| Author | Choi, Jihun Baek, Saeyeon Jeon, Sangmin Yim, Changyong |
| Copyright Year | 2021 |
| Description | In this study, a simple method for synthesizing graphene layer directly on a quartz crystal microbalance (QCM) using a laser was developed. This laser-induced graphene (LIG) was used for sensing surface to simultaneously measure changes in the adsorbed mass, film stiffness, and electrical resistance during water adsorption. The developed LIG-QCM is convenient because its fabrication process is free of any tedious masking and vacuuming steps. A thin layer of polyimide (PI) film was spin-coated on one side of a quartz crystal microresonator, and interdigitated electrodes (IDE) were patterned on the PI surface using a laser engraver. The adsorption of water molecules on the sensing surface induced changes in mass, stiffness, and electrical conductivity, which were measured from the changes in resonance frequency, Q factor of the quartz crystal, and electrical resistance, respectively. The results indicated that the developed sensor could be a humidity sensing platform using LIG. |
| Starting Page | 289 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst11030289 |
| Journal | Crystals |
| Issue Number | 3 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-03-15 |
| Access Restriction | Open |
| Subject Keyword | Crystals Analytical Chemistry Laser-induced Graphene Quartz Crystal Microbalance Microresonator Gas Sensor Multi Sensor Humidity Sensing |
| Content Type | Text |
| Resource Type | Article |
