A simple dielectric resonator-based sensor for temperature measurement

Wang, Qingmin; Liu, Yang; Zhang, Mohan; Bai, Xia; Gao, Zhiwei

doi:10.1016/j.rinp.2021.104481

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…These intrinsic electronic factors are governed mostly by the increased charge accumulation with changes in metal conductivity and insulator's varying dielectric permittivity at polymer-SiO x nanoparticle interface, which is also supported in literature. [26,[35][36][37] A possible increase in the dielectric constant would result in an increase in the charge accumulation at the electrode to insulator interface junction, for both the electrodes across the insulator layer, for the MIM devices. Besides this, we have also concluded exclusion of the possibility of geometrical/ dimensional changes developed by either the increase of active area by the expansion of electrodes or decrease of the insulator layer thickness, which are the only other ways to inhibit changes to the capacitance values, at a constant operational bias frequency.…”

Section: Electrical Characterizationmentioning

confidence: 99%

“…[26] Such effect and phenomena are explained in depth by several other investigations. [35][36][37] The main scientific focus here is to investigate and establish the correlation between the electrical sensitivity of the printed electronic devices, with respect to several variables such as the deposition parameters, geometrical dimensions, and materials, concerning the variation in high-temperature changes. The printed thermal sensors were based on a MIM interface architecture (capacitive type), while the active areas are investigated between the range of 16 and 36 mm 2 .…”

Section: Introductionmentioning

confidence: 99%

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Inkjet‐Printed Flexible Thin‐Film Thermal Sensors for Detecting Elevated Temperature Range

Mitra,

Thalheim

et al. 2023

Physica Status Solidi (a)

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All inkjet‐printed thermal sensors are manufactured based on a metal–insulator–metal (MIM) interface or capacitor architecture, for the adapted device size ranging from 16 to 36 mm2 active area. Two different material inks, namely a nanoparticle conductive silver ink and an inorganic‐polymer‐based hybrid insulator ink, are applied layer by layer on a thin flexible polyimide substrate, for developing the printed MIM devices. To ensure the desired electronic conductivity and insulation from the layers, the manufacturing process steps and parameters are tuned, accordingly. The results show that the inkjet‐printed MIM devices could constitute up to 15 μm thickness and demonstrate average detection of a change in electrical capacitance ranging from 20 to 100 pF, when the temperature is varied between 100 and 300 °C. The investigations also summarize that the change in the electrical response is enough to detect an increment of 50 °C. The printed sensors also display high operational stability and repeatability, when subjected to thermal cycling.

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Section: Electrical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inkjet‐Printed Flexible Thin‐Film Thermal Sensors for Detecting Elevated Temperature Range

Mitra,

Thalheim

et al. 2023

Physica Status Solidi (a)

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“…After introducing MMAs successfully, MMAs have been developed for various frequency bands in microwave [8,9] to terahertz (THz) [10][11][12], infrared [13][14][15] and optic regime [16][17][18]. Perfect absorption allows MMAs to be developed for various applications in energy harvesting [1,19], lens [20,21], sensing [22,23] and biological and grain detection [24,25]. In addition to perfect absorption, MMAs offer other advantages compared to traditional absorbers.…”

Section: Introductionmentioning

confidence: 99%

Design of wideband metamaterial absorber using circuit theory for X‐band applications

pour

Chegini

Mighani

2023

IET Microwaves Antenna & Prop

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A broadband metamaterial absorber working in the X‐band is designed and fabricated by 3D printing in this study. This structure is capable of nearly absorbing the power of incoming waves (more than 90%) in the frequency band starting from 7.1 to 13.8 GHz. This metamaterial absorber is designed based on an infinite array of conductive ribbons, and the thickness of the absorber is just 0.1λ for the minimum frequency (without considering the thickness of the ground layer). A circuit model and transmission line theory are used to design and explain the absorption principle of the proposed structure. Our novel design method is flexible and can be applied to other frequency bands. The satisfaction of the proposed absorber can be applied to many applications namely communication, electromagnetic shielding, radar and satellite. Furthermore, due to the flexibility of the substrate, the proposed absorber is also suitable for flexible applications in the X‐band.

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“…[18][19][20][21] A common example of this is RF sensors, wherein conductive traces are patterned so as to resonate when excited by RF waves. [22][23][24][25] Such an approach has been adapted to build sensors and biosensors sensitive to a variety of chemophysical signals, such as pressure, [26,27] temperature, [28][29][30] glucose, [31,32] salinity, [33,34] nutrients, [35,36] and more. Despite the emerging versatility of this approach, RF sensor readout is still highly limited, as typically only a single sensor is assessed at a time, and the technique is not stable to mechanical noise because readout coil and sensor alignment are typically not fixed.…”

Section: Introductionmentioning

confidence: 99%

Programmable Multiwavelength Radio Frequency Spectrometry of Chemophysical Environments through an Adaptable Network of Flexible and Environmentally Responsive, Passive Wireless Elements

Dautta

Hajiaghajani

et al. 2022

Small Science

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Readout of multiparametric environmental signals typically uses discrete sensing formats that individually require unique signal conditioning circuitry and/or processing pathways. Here, adaptable sensor networks composed exclusively of passive material architectures that enable spectrometric comonitoring of chemical or physical environmental signals are proposed. Herein, a single radio frequency (RF) reader wirelessly interacts first with an intermediate wireless relay coil—this is tunable in length and can be designed to conform around surfaces. This relay (that is fused on textiles or surfaces) is then wirelessly coupled to arrays of passive RF sensors with individually programmable flexibility/reactivity to environmental signals. Multiple chemical and physical signals can then be monitored within the single spectral readout of a wearable reader. This technique can probe over tunable length scales, and is robust to mechanical disturbances that limit present techniques. As a proof of concept, this approach is used to comonitor chemophysical metrics such as nutrients, temperature, pressure, pH, and more on the skin or in utensils with a single readout. This technique may form a cornerstone of zero‐microelectronic sensor networks.

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A simple dielectric resonator-based sensor for temperature measurement

Cited by 5 publications

References 27 publications

Inkjet‐Printed Flexible Thin‐Film Thermal Sensors for Detecting Elevated Temperature Range

Inkjet‐Printed Flexible Thin‐Film Thermal Sensors for Detecting Elevated Temperature Range

Design of wideband metamaterial absorber using circuit theory for X‐band applications

Programmable Multiwavelength Radio Frequency Spectrometry of Chemophysical Environments through an Adaptable Network of Flexible and Environmentally Responsive, Passive Wireless Elements

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