[23p-32A-1~5] 17.2 Graphene

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)English Presentation

[23p-32A-4] Suspended graphene Surface acoustic wave skin gas sensor for effective detection of acetone gas molecules

〇Sankar Ganesh Ramaraj¹, Zhou Haolong¹, Hiroyasu Yamahara¹, Hitoshi Tabata¹ (1.Univ. of Tokyo)

Keywords:

Graphene,Gas sensor,Acetone

The skin gas technique is promising and effective for the detection and diagnosis of various diseases by detecting biomarkers on the human skin. The skin gas analysis technique is considerably easier and more effective than the EB method for collecting skin gas molecules without any burden on patients. Diabetes is the primary cause of cardiovascular diseases and diabetic retinopathy. The SiO2 micropillars guiding layer deposited on the surface of the black 36°YX-LiTaO3 (B-LT) substrate effectively decreased the insertion losses and noise levels in the device. It is worth mentioning that a CVD graphene sensor with a 3 μm SiO2 guiding layer exhibited an excellent gas response as low as 100 ppb, which can detect skin gas molecules and meet the needs of diabetes monitoring in medical diagnosis applications.