TY - JOUR
T1 - Microwave characterization of chitosan hydrogel and its use as a wireless pH sensor in smart packaging applications
AU - Athauda, Tharindu
AU - Banerjee, Parama Chakraborty
AU - Karmakar, Nemai Chandra
PY - 2020/8/15
Y1 - 2020/8/15
N2 - pH is an important parameter in cold chain applications, identified as a key food freshness indicator, especially in perishables. In view of this, in recent years the traction of low-cost RFID tags has increased, especially in the domain of physical parameter sensing. In this paper, we present the electromagnetic characterization of the chitosan-based hydrogel in ultra-wideband (UWB) frequencies, and its use as a pH sensor with chipless radio frequency identification (RFID) resonators. This paper also shows the complete preparation process of hydrogel, and how chitosan hydrogel changes its physical responses to different pH levels. Moreover, we show the changing hydrogel's physical properties and its correlation with changes in frequency response, enabling low-cost pH sensing in UWB. Chipless RFID sensors are relatively low-cost, but they offer enormous design flexibility in diversified applications such as cold chain, smart packaging, and digital agriculture.
AB - pH is an important parameter in cold chain applications, identified as a key food freshness indicator, especially in perishables. In view of this, in recent years the traction of low-cost RFID tags has increased, especially in the domain of physical parameter sensing. In this paper, we present the electromagnetic characterization of the chitosan-based hydrogel in ultra-wideband (UWB) frequencies, and its use as a pH sensor with chipless radio frequency identification (RFID) resonators. This paper also shows the complete preparation process of hydrogel, and how chitosan hydrogel changes its physical responses to different pH levels. Moreover, we show the changing hydrogel's physical properties and its correlation with changes in frequency response, enabling low-cost pH sensing in UWB. Chipless RFID sensors are relatively low-cost, but they offer enormous design flexibility in diversified applications such as cold chain, smart packaging, and digital agriculture.
KW - Chipless RFID sensor
KW - chitosan hydrogel
KW - low-cost
KW - pH sensing
KW - remote sensing
KW - smart packaging
UR - http://www.scopus.com/inward/record.url?scp=85088866589&partnerID=8YFLogxK
U2 - 10.1109/JSEN.2020.2986808
DO - 10.1109/JSEN.2020.2986808
M3 - Article
AN - SCOPUS:85088866589
SN - 1530-437X
VL - 20
SP - 8990
EP - 8996
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 16
ER -