Inkjet Printed Silver Nanoparticle Humidity Sensor With Memory Effect on Paper

This paper presents the realization and the experimental characterization of a low cost inkjet-printed DC magnetic field sensor. The device consists of a thin flexible cantilever beam operated at its first resonance frequency by the interaction between the target magnetic field and an AC current flowing through a coil printed on the beam. A resistive readout strategy is implemented by a printed strain gauge to measure the beam deflection strength, which is correlated to the target field strength. A dedicated electronics is used for the sake of the sensor operation. The sensor behaviour has been investigated for different values of the driving current and the target magnetic field. As an example, the sensor responsivity and resolution for a driving current of 20 mA @ 9.1 Hz (the beam resonance frequency) are 0.009 Ω/Ω/T and 1.2 mT, respectively.

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“…Example of sensors developed by low cost inkjet printers are available in [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

All Inkjet-Printed B Field Sensor

Andò

Baglio

Marletta

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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“…Another interesting aspect regards the possibility of printing on flexible substrates, leading to instruments that fit perfectly to working surfaces of various shapes. Examples cover different components, like Radio Frequency Identification (RFID) tags [15], antennas [16] and sensors [12,14,[17][18]. In a telemetric system, passive components can be realized with such technology.…”

Section: Introductionmentioning

confidence: 99%

Study on a telemetrie system that works with an inkjet-printed resistive strain gauge

Bona

Sardini

Serpelloni

et al. 2016

2016 IEEE Sensors Applications Symposium (SAS)

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Measuring strain is a task frequently required in many applications and, often, measurement devices have to adopt technologies that respect specific requirements, especially concerning power supply and transmission of information. In particular, the exploitation of wired solutions or batteries has several problems or it should be avoided in harsh environments. A valid answer to these issues is provided by telemetric systems, which consist of a reading unit that communicates with a passive sensor through the magnetic field established between two inductors connected to these components. The present work describes a study carried out on a telemetric system that has some elements of novelty with respect to the major part of those found in the literature. In fact, it operates with a resistive strain gauge realized through the innovative technology of inkjet printing on a flexible substrate. This permits to introduce advantages relating to design variability and low production cost of the components. Experimental tests were conducted in order to characterize the strain gauge and analyze overall system frequency behavior. Preliminary achieved results are satisfying, highlighting the possibility to measure telemetrically the strain from an inkjet-printed resistive sensor

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“…Moreover, great efforts and very valuable advances have been made in the design of flexible and printed sensor [11][12][13]. Thanks to the requirement of low energy consumption, many gases and humidity printed sensors are capacitive, specifically through changes in the electrical permittivity of some component of the capacitor.…”

Section: Introductionmentioning

confidence: 99%