TY - JOUR
T1 - Fully Inkjet-Printed Gas-Sensing Antenna Based on Carbon Nanotubes for Wireless Communication Applications
AU - Kao, Hsuan Ling
AU - Chang, Li Chun
AU - Tsai, Yun Chen
AU - Chen, Chun Bing
AU - Chiu, Hsien Chin
N1 - Publisher Copyright:
© 2024 The Electrochemical Society (“ECS”). Published on behalf of ECS by IOP Publishing Limited
PY - 2024/1
Y1 - 2024/1
N2 - This study presents a fully inkjet-printed antenna based on carbon nanotubes (CNTs) for ammonia-gas-sensing. The antenna-embedded CNT film must satisfy strict requirements in terms of resistance, uniformity, and stability. Various resistive-type gas sensors based on CNTs, which are controlled by droplet spacing (DS) and multiple passes, are realized by inkjet-printing technology to investigate their sensing characteristics. The gas response decreases with increasing CNT density; however, the distribution of repeatability is tighter because the connection junctions among CNTs increase and the conductive paths saturate. The relationship between CNT density and gas-sensing response is presented for the first time. According to the response of the resistive-type gas sensors, low resistance and stable sensing response of a DS = 20 μm and 20-pass CNT film is suitable for embedding into an antenna for gas-sensing. The sensitivities of insertion and return losses under exposure to NH3 of the gas-sensing antenna demonstrate a linear relationship and reproducibility. The gas-sensing antenna based on CNT films exhibits two-dimensional value responses, real-time gas detection, reproducibility, and reversibility, which provide a viable option for wireless sensing systems.
AB - This study presents a fully inkjet-printed antenna based on carbon nanotubes (CNTs) for ammonia-gas-sensing. The antenna-embedded CNT film must satisfy strict requirements in terms of resistance, uniformity, and stability. Various resistive-type gas sensors based on CNTs, which are controlled by droplet spacing (DS) and multiple passes, are realized by inkjet-printing technology to investigate their sensing characteristics. The gas response decreases with increasing CNT density; however, the distribution of repeatability is tighter because the connection junctions among CNTs increase and the conductive paths saturate. The relationship between CNT density and gas-sensing response is presented for the first time. According to the response of the resistive-type gas sensors, low resistance and stable sensing response of a DS = 20 μm and 20-pass CNT film is suitable for embedding into an antenna for gas-sensing. The sensitivities of insertion and return losses under exposure to NH3 of the gas-sensing antenna demonstrate a linear relationship and reproducibility. The gas-sensing antenna based on CNT films exhibits two-dimensional value responses, real-time gas detection, reproducibility, and reversibility, which provide a viable option for wireless sensing systems.
UR - http://www.scopus.com/inward/record.url?scp=85182891706&partnerID=8YFLogxK
U2 - 10.1149/2162-8777/ad1ac5
DO - 10.1149/2162-8777/ad1ac5
M3 - 文章
AN - SCOPUS:85182891706
SN - 2162-8769
VL - 13
JO - ECS Journal of Solid State Science and Technology
JF - ECS Journal of Solid State Science and Technology
IS - 1
M1 - 011007
ER -