Capacitive Humidity Sensors on Flexible RFID Labels

Oprea, A.; Bârsan, Nicolae; Bauersfeld, Marie‐Luise; Ebling, D.; Wöllenstein, Jürgen

doi:10.1109/sensor.2007.4300564

Cited by 17 publications

(11 citation statements)

References 4 publications

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“…ink-jet printing, screen-printing, etc.). [1][2][3][4][5][6][7][8][9][10] Therefore there is still a clear need for fully printed low temperature component structures with functional materials.…”

Section: Introductionmentioning

confidence: 99%

“…However, piezoelectric printable components offer excellent and low cost large area fabrication opportunities, freedom in substrate material selection (including organic materials) and simplified embedding of components. [1,[4][5][6][7][8]15] In many cases either PVDF or P(VDF-TrFE) co-polymer is selected for the polymer matrix of a piezoelectric composite. This is due not only to its crystalline and piezoelectric structure, but also to its easy solution-based processability, low processing temperature, high sensitivity and flexibility with low density.…”

Section: Introductionmentioning

confidence: 99%

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Electromechanical properties of PZT/P(VDF-TrFE) composite ink printed on a flexible organic substrate

Siponkoski

Nelo

Palosaari

et al. 2015

Composites Part B: Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electromechanical properties of PZT/P(VDF-TrFE) composite ink printed on a flexible organic substrate

Siponkoski

Nelo

Palosaari

et al. 2015

Composites Part B: Engineering

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“…for the construction industry, electronics packaging and quality control of food during storage and transportation) [1][2][3][4]. A wireless sensor is composed of an antenna and a sensor device.…”

Section: Introductionmentioning

confidence: 99%

Proton motion in a polyelectrolyte: A probe for wireless humidity sensors

Larsson

Wang

Berggren

et al. 2010

Sensors and Actuators B: Chemical

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Low-cost passive wireless electronic sensor labels glued onto packages are highly desirable since they enable monitoring of the status of the packages for instance along the logistic chain or while stored at a shelf. Such additional sensing feature would be of great value for many producers and vendors, active in e.g. the food or construction industries. Here, we explore a novel concept for wireless sensing and readout, in which the humidity sensitive ionic motion in a polyelectrolyte membrane is directly translated into a shift of the resonance frequency of a resonance circuit. Thanks to its simplicity, the wireless sensor device itself can be manufactured entirely using common printing techniques and can be integrated into a lowcost passive electronic sensor label.

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“…Humidity sensor tags have been developed for high-frequency (HF) RFID systems, [4] as well as for ultra-HF (UHF) RFID systems [5]- [8], and have been fabricated using either traditional photolithography or screen printing. The humidity sensor tag, which is presented in this paper, is fabricated using inkjet technology.…”

Section: Inkjet-printed Humidity Sensor Formentioning

confidence: 99%

Inkjet-Printed Humidity Sensor for Passive UHF RFID Systems

Virtanen

Ukkonen

Björninen

et al. 2011

IEEE Trans. Instrum. Meas.

195

105

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Abstract-This paper presents a novel inkjet-printed humidity sensor tag for passive radio-frequency identification (RFID) systems operating at ultrahigh frequencies (UHFs). During recent years, various humidity sensors have been developed by researchers around the world for HF and UHF RFID systems. However, to our best knowledge, the humidity sensor presented in this paper is one of the first passive UHF RFID humidity sensor tags fabricated using inkjet technology. This paper describes the structure and operation principle of the sensor tag as well as discusses the method of performing humidity measurements in practice. Furthermore, measurement results are presented, which include air humidity-sensitivity characterization and tag identification performance measurements.Index Terms-Inkjet, radio-frequency identification (RFIF), relative humidity (RH), sensor.

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Capacitive Humidity Sensors on Flexible RFID Labels

Cited by 17 publications

References 4 publications

Electromechanical properties of PZT/P(VDF-TrFE) composite ink printed on a flexible organic substrate

Electromechanical properties of PZT/P(VDF-TrFE) composite ink printed on a flexible organic substrate

Proton motion in a polyelectrolyte: A probe for wireless humidity sensors

Inkjet-Printed Humidity Sensor for Passive UHF RFID Systems

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