CNT-based RFID passive gas sensor

Occhiuzzi, Cecilia; Rida, A.; Marrocco, Gaetano; Tentzeris, Manos M.

doi:10.1109/mwsym.2011.5972715

Cited by 10 publications

(11 citation statements)

References 13 publications

(12 reference statements)

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“…Results are encouraging while packing four RFID sensors into a compact array still remains an open issue due to an increase in cross sensitivity of each tag. A single-wall Carbon Nanotube (CNT) buckypaper based RFID tag as a low-cost and maintenance free sensor solution for NH3 measurement is investigated and verified by experiments in [45]. An inkjet printing method to deposit single-walled CNT film on a fully printed UHF RFID module on paper to form a wireless gas sensor node for toxic gas detection is introduced in [46].…”

Section: B Environment Monitoringmentioning

confidence: 99%

RFID Tag as a Sensor - A Review on the Innovative Designs and Applications

Meng

2016

Measurement Science Review

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The Radio Frequency Identification (RFID) technology has gained interests in both academia and industry since its invention. In addition to the applications in access control and supply chain, RFID is also a cost-efficient solution for Non-Destructive Testing (NDT) and pervasive monitoring. The battery free RFID tags are used as independent electromagnetic sensors or energy harvesting and data transmission interface of sensor modules for different measurement purposes. This review paper aims to provide a comprehensive overview of the innovative designs and applications of RFID sensor technology with new insights, identify the technical challenges, and outline the future perspectives. With a brief introduction to the fundamentals of RFID measurement, the enabling technologies and recent technical progress are illustrated, followed by an extensive discussion of the novel designs and applications. Then, based on an in-depth analysis, the potential constraints are identified and the envisaged future directions are suggested, including printable/wearable RFID, System-on-Chip (SoC), ultra-low power, etc. The comprehensive discussion of RFID sensor technology will be inspirational and useful for academic and industrial communities in investigating, developing, and applying RFID for various measurement applications.

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Section: B Environment Monitoringmentioning

confidence: 99%

RFID Tag as a Sensor - A Review on the Innovative Designs and Applications

Meng

2016

Measurement Science Review

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“…All of these features make it competitive in many application areas. According to its sensing target, the RFID sensor tags can be classified into temperature [1]- [2], humidity [3], gas senor [4], etc. All of these designs utilize the electrical properties of the sensing materials to monitor the environmental changes.…”

Section: Introductionmentioning

confidence: 99%

A high sensitivity capacitively-loaded UHF RFID temperature sensor tag using PTFE material

Qiao

Zhang

Yang

et al. 2014

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)

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A capacitively-loaded passive RFID temperature sensor tag working at UHF band is designed and tested. A cavity backed slot antenna is designed as the tag antenna. In order to realize high temperature sensitivity, the Polytetrafluoroethylene (PTFE) material which has a large thermal expansion of 140ppm/°C is used as the temperature sensing material. A copper coated PTFE post is placed at the center of the cavity, which is in close proximity to the cavity ceiling. Thus, a loaded capacitor is generated between the PTFE surface and the cavity ceiling. As the temperature increases, the PTFE will approach to the cavity ceiling due to the thermal expansion, and thus change the loaded capacitance; therefore, the resonant frequency of the slot antenna will change accordingly. By distinguishing the resonant frequency of the antenna, the temperature information is obtained. The simulation results show that this design provides a frequency shift of 30MHz/10°C and a read range of 10.5m.

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“…According to the sensing parameters, they can be classified into temperature sensing antennas [1][2][3], humidity sensing antennas [4][5], gas sensing antennas [6], etc. In these designs, the sensor units are directly integrated in antennas and the sensing capabilities are realized by reconfiguring the characteristics of the antennas such as frequency [1][2][3][4] and RCS signature [6]. They all have the advantages of passive and low cost, which make them favorable in large scale deployment.…”

Section: Introductionmentioning

confidence: 99%

High-sensitivity RFID sensing antennas: From sensing mechanism selections to antennas structure designs

Yang

Qiao

Zhang

et al. 2014

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS)

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Sensitivity is an important parameter to evaluate the performance of RFID sensing antennas. In order to obtain high sensitivity, two different sensing mechanisms are selected for temperature monitoring. One utilizes the electrical properties of sensing materials, and the other utilizes the thermal properties of sensing materials. Water and high density polyethylene-Ba0.3Sr0.7TiO3 (HDPE-BST) are the ones with temperature dependent electrical properties. On the other hand, mercury and Polytetrafluoroethylene (PTFE) are selected for their distinct thermal expansion properties. To magnify the effects of the sensing materials on the antennas characteristics, two different antenna configurations are used. Patch antennas are designed for the materials with electrical properties, and cavity backed slot antennas are designed for easy integration with the sensing materials with thermal properties. All of the four designs are frequency reconfigurable sensing antennas. In this situation, frequency shift per temperatures (Δf/ΔT), realized gain, and realized gain bandwidth are used to evaluate the antenna sensitivity. Finally, measurement results show that 40 MHz/10°C frequency shift with 14 m read range is realized by a capacitively-loaded cavity backed slot sensing antenna using thermal properties of the PTFE material.

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CNT-based RFID passive gas sensor

Cited by 10 publications

References 13 publications

RFID Tag as a Sensor - A Review on the Innovative Designs and Applications

RFID Tag as a Sensor - A Review on the Innovative Designs and Applications

A high sensitivity capacitively-loaded UHF RFID temperature sensor tag using PTFE material

High-sensitivity RFID sensing antennas: From sensing mechanism selections to antennas structure designs

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