TY - JOUR
T1 - Photonic microresonator based sensor for selective nitrate ion detection
AU - Zhang, Zhongbo
AU - Zhang, Xufeng
AU - Rajh, Tijana
AU - Guha, Supratik
N1 - Funding Information:
This research was funded by the National Science Foundation (Award No. 1841652). This work was performed at the Center for Nanoscale Materials, Argonne National Laboratory. Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The authors thank Dr. Ralu Divan, Dr. David Czaplewski, and Dr. Leonidas Ocola for helping in device fabrication, and Dr. Houcheng Chang for helping with the functionalization coating.
Funding Information:
This research was funded by the National Science Foundation (Award No. 1841652). This work was performed at the Center for Nanoscale Materials, Argonne National Laboratory. Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The authors thank Dr. Ralu Divan, Dr. David Czaplewski, and Dr. Leonidas Ocola for helping in device fabrication, and Dr. Houcheng Chang for helping with the functionalization coating.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/2/1
Y1 - 2021/2/1
N2 - Sensing nitrate concentrations in soil with high sensitivity and selectivity using field-deployable compact sensor platforms is a sought-after goal for environment and agriculture applications. This study demonstrates a new optically based nitrate sensing platform based on ion-selective membrane (ISM) functionalized chip-scale photonic micro-ring resonators. Our approach relies upon measurements of resonance shifts in the micro-resonators and leverages the excellent, though little studied, optical properties of ISMs. Using a high-quality micro-ring resonator, a nitrate ion-selective photonic sensor exhibits a detection limit down to 0.1 parts per million (ppm) and enables nitrate concentration measurements in the 1−100 ppm level, appropriate for soil science and agriculture. Importantly, the sensor also shows high selectivity over other competing anions in soil, such as Cl− and NO2−. We argue that this chip-scale approach can be incorporated into compact sensor platforms.
AB - Sensing nitrate concentrations in soil with high sensitivity and selectivity using field-deployable compact sensor platforms is a sought-after goal for environment and agriculture applications. This study demonstrates a new optically based nitrate sensing platform based on ion-selective membrane (ISM) functionalized chip-scale photonic micro-ring resonators. Our approach relies upon measurements of resonance shifts in the micro-resonators and leverages the excellent, though little studied, optical properties of ISMs. Using a high-quality micro-ring resonator, a nitrate ion-selective photonic sensor exhibits a detection limit down to 0.1 parts per million (ppm) and enables nitrate concentration measurements in the 1−100 ppm level, appropriate for soil science and agriculture. Importantly, the sensor also shows high selectivity over other competing anions in soil, such as Cl− and NO2−. We argue that this chip-scale approach can be incorporated into compact sensor platforms.
KW - Integrated photonic sensor
KW - Ion selective membrane
KW - Micro-ring resonator
KW - Nitrate sensor
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U2 - 10.1016/j.snb.2020.129027
DO - 10.1016/j.snb.2020.129027
M3 - Article
AN - SCOPUS:85094578783
SN - 0925-4005
VL - 328
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
M1 - 129027
ER -