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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ock-in amplifier as an alternative for reading Radio-Frequency identification (RFID) tags in sensing application

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Author(s):
De Lima, Guilherme R. [1] ; Gozzi, Giovani [2] ; Fugikawa-Santos, Lucas [2]
Total Authors: 3
Affiliation:
[1] Sao Paulo State Univ UNESP, Inst Biosci Letters & Exact Sci, Sao Jose Do Rio Preto, SP - Brazil
[2] Sao Paulo State Univ UNESP, Inst Geosci & Exact Sci, Rio Claro, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Instrumentation Science & Technology; v. 50, n. 3 SEP 2021.
Web of Science Citations: 0
Abstract

High-frequency (HF) radio-frequency identification (RFIDs) tags can be combined to electrodes coated with semiconducting thin-films to produce low-cost and disposable sensors with wireless capabilities. Mobile phone applications generally use near-field connection (NFC) to read chip digital information, providing discrete information from the device. To obtain a continuous analogic reading, more sophisticated equipment such as spectrum analyzers are needed. In the present article, we describe a method to obtain the frequency response spectrum of RFID tags using synchronous detection via a lock-in amplifier. The tags were coupled to interdigitated electrodes coated with semiconducting metal oxides (SMOs) to produce UV-sensors and with semiconducting polymer polyaniline (Pani) as chemically responsive wireless devices for the proof-of-concept of the developed method. (AU)

FAPESP's process: 19/08019-9 - Transparent/flexible transistors: from the study of transport properties to the development of circuitries
Grantee:Lucas Fugikawa Santos
Support Opportunities: Regular Research Grants