Fluctuation-Enhanced Sensing (FES): A Promising Sensing Technique

Scandurra, G.; Smulko, Janusz; Kish, László B.

doi:10.3390/app10175818

Cited by 14 publications

(10 citation statements)

References 105 publications

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“…When the sensors are operating at low temperatures, the gas molecules are adsorbed at the porous gas sensing layer. Their presence cannot be used to gas identified by the measurements of average electrical characteristics such as resistance, but only by the application of the fluctuation enhance sensing methods [45], [46]. That may suggest, that rather operation and modulation at higher heater voltages could give better results of gas recognition.…”

Section: ) Sensor Heater Voltage Modulation Profilementioning

confidence: 99%

Application of a Low-Cost Electronic Nose to Detect of Forest Tree Pathogens: Fusarium oxysporum and Phytophthora plurivora

et al. 2022

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The presence of forest tree pathogens may lead to substantial problems and their early detection in the stage of seeds storage or nurseries may be critical for the choice of appropriate management strategy. A new construction of a low-cost electronic nose was tested on the samples of pathogenic fungi and oomycetes of Fusarium oxysporum and Phytopthora plurivora. The electronic nose uses Figaro Inc. TGS series sensors with applied heater voltage modulation. Such a mode of electronic nose operation may be more appropriate for application for constant monitoring of seeds storage, when we compare it to the the method applying modulation of the gas concentration. A rectangular shape of the sensors' heater voltage modulation pattern, with a shallow drop of the heater voltage from the nominal voltage, was proposed. Data visualization using the principal component analysis method and the random forest machine learning technique used to build classification models. The classification accuracy of 97% was obtained by a fusion of data collected by TGS 2610 and TGS 2602 sensors.

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Section: ) Sensor Heater Voltage Modulation Profilementioning

confidence: 99%

Application of a Low-Cost Electronic Nose to Detect of Forest Tree Pathogens: Fusarium oxysporum and Phytophthora plurivora

et al. 2022

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“…The knowledge of the low-frequency noise is important for assessing the quality of the material and its prospects for any electronic, spintronic or sensor application. [38,39] The noise spectral density and its dependence on external stimuli, e.g. electrical bias and temperature, can shed light on electron transport, carrier recombination mechanisms and, what is most important in this case, magnetic and metal-insulator phase transitions.…”

Section: Introductionmentioning

confidence: 99%

Low‐Frequency Electronic Noise in Quasi‐2D van der Waals Antiferromagnetic Semiconductor FePS₃—Signatures of Phase Transitions

Ghosh

Kargar

Mohammadzadeh

et al. 2021

Adv Elect Materials

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These layered quasi-2D van der Waals (vdW) compounds have interesting electronic, optical, and magnetic properties that can offer new device functionalities. [7][8][9][10][11][12][13][14][15][16][17][18][19] It has been demonstrated that some MPX 3 thin films are one of the rare few-layer vdW materials, which can have stable intrinsic antiferomagnetism (AF) even at mono-and few layer thicknesses. [20][21][22] The existence of weak vdW bonds between the MPX 3 layers makes them potential candidates for the 2D spintronic devices. The metal element of the MPX 3 materials modifies the bandgap from a medium bandgap of ≈1.3 eV to a wide bandgap of ≈3.5 eV. [1][2][3] The diverse properties of these materials tunable by proper selection and combination of the M and X elements make the MPX 3 materials an interesting platform for fundamental science and practical applications. [1][2][3][4][23][24][25][26][27][28][29][30] Among MPX 3 materials, FePS 3 is particularly promising. Its Ising-type ordering allows it to maintain the bulk-like magnetic behavior down to a single monolayer, which explains its moniker -"magnetic graphene." [31] The cleavage energy of FePSe 3 is slightly higher than that of graphite, while that for all other combinations of the M and X elements is lower than that of graphite. [32] The Néel temperature, T N , for FePS 3 is reported to be around 118 K. [1,2,20] It shows strong magnetic anisotropy. [15,33,34] In the crystal, each Fe atom is ferromagnetically coupled with two of its neighbors but the layer is antiferromagnetically coupled with nearest layers making it a zigzag-AF (z-AF) material. [1] The semiconducting nature of FePS 3 , with the energy bandgap of 1.5 eV, and a possibility of the strain engineering of electron and phonon band-structure create additional means for the control of both electron and spin transport. [9,17,35] The quantized spin waves, i.e., magnons in FePS 3 , have frequencies in the terahertz (THz) frequency range, [36,37] which makes this material interesting for THz magnonic devices. However, the electron and spin transport properties of FePS 3 have not been studied in sufficient details yet to assess the potential of such materials for THz applications.Here, we report the results of investigation of low-frequency current fluctuations, i.e., electronic noise, in thin films of FePS 3. The current-voltage (I-V) and noise characteristics

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“…Also, this is not the only case when fluctuations processing instead of filtering them out is proposed for improving discriminating ability. Actually, this note falls into the promising and developed area of fluctuation enhanced sensing, see [16], [17].…”

Section: Selectivity Gainmentioning

confidence: 99%

Harnessing thermal fluctuations for selectivity gain

Vidybida

2022

2022 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN)

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Selectivity of olfactory receptor neuron (ORN) is compared with that of its receptor proteins (R) with fluctuations of odor binding-releasing process taken into account. The binding-releasing process is modeled as N Bernoulli trials, where N is the total number of R per ORN. Dimensionless selectivities for both R and ORN are introduced and compared with each other. It is found the ORN's selectivity can be much higher then that of its receptor proteins. This effect is concentrationdependent. Possible application for biosensors is discussed.

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Fluctuation-Enhanced Sensing (FES): A Promising Sensing Technique

Cited by 14 publications

References 105 publications

Application of a Low-Cost Electronic Nose to Detect of Forest Tree Pathogens: Fusarium oxysporum and Phytophthora plurivora

Application of a Low-Cost Electronic Nose to Detect of Forest Tree Pathogens: Fusarium oxysporum and Phytophthora plurivora

Low‐Frequency Electronic Noise in Quasi‐2D van der Waals Antiferromagnetic Semiconductor FePS₃—Signatures of Phase Transitions

Harnessing thermal fluctuations for selectivity gain

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Fluctuation-Enhanced Sensing (FES): A Promising Sensing Technique

Cited by 14 publications

References 105 publications

Application of a Low-Cost Electronic Nose to Detect of Forest Tree Pathogens: Fusarium oxysporum and Phytophthora plurivora

Application of a Low-Cost Electronic Nose to Detect of Forest Tree Pathogens: Fusarium oxysporum and Phytophthora plurivora

Low‐Frequency Electronic Noise in Quasi‐2D van der Waals Antiferromagnetic Semiconductor FePS3—Signatures of Phase Transitions

Harnessing thermal fluctuations for selectivity gain

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Low‐Frequency Electronic Noise in Quasi‐2D van der Waals Antiferromagnetic Semiconductor FePS₃—Signatures of Phase Transitions