Review of Physical Principles of Sensing and Types of Sensing Materials

Spain, Elaine; Venkatanarayanan, Anita

doi:10.1016/b978-0-08-096532-1.01302-9

Cited by 14 publications

(8 citation statements)

References 247 publications

(211 reference statements)

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“…When these substances are within a specific temperature range, there is a net atomic moment, and the arrangement is such that the magnetization continues after the external electric field is removed. Below a certain temperature called the Curie temperature (CT), the continuous increase of the magnetic field applied to the ferromagnetic substance will cause the magnetization to increase to a high value, called the saturation magnetiza-tion [91]. However, when the ferromagnetic body is heated, the parallel temperature will disappear when the temperature is above the CT leading to a paramagnetic behavior [92].…”

Section: Properties Of Mnpsmentioning

confidence: 99%

Interaction between Filler and Polymeric Matrix in Nanocomposites: Magnetic Approach and Applications

et al. 2021

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In recent years, polymer nanocomposites produced by combining nanofillers and a polymeric matrix are emerging as interesting materials. Polymeric composites have a wide range of applications due to the outstanding and enhanced properties that are obtained thanks to the introduction of nanoparticles. Therefore, understanding the filler-matrix relationship is an important factor in the continued growth of this scientific area and the development of new materials with desired properties and specific applications. Due to their performance in response to a magnetic field magnetic nanocomposites represent an important class of functional nanocomposites. Due to their properties, magnetic nanocomposites have found numerous applications in biomedical applications such as drug delivery, theranostics, etc. This article aims to provide an overview of the filler-polymeric matrix relationship, with a special focus on magnetic nanocomposites and their potential applications in the biomedical field.

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Section: Properties Of Mnpsmentioning

confidence: 99%

Interaction between Filler and Polymeric Matrix in Nanocomposites: Magnetic Approach and Applications

et al. 2021

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“…In measuring emissions, scattering or absorption are the main mechanisms of the optical gas sensor [20]. However, infrared (IR) absorption spectroscopy is the most common technique used for optical methane sensors, where the wavelength and the absorption intensity of mid-IR light are measured to determine the qualitative identification of the molecules [21]. Certain chemical bonds have specific absorption band wavelengths making it possible to identify the gas by mid-IR absorption sensors.…”

Section: Optical Sensorsmentioning

confidence: 99%

“…Wolfebeis et al [26], Shemshad et al [27], and Yin et al [21] studied the advantages and disadvantages of near-infrared methane sensors based on non-chemical fiber optics, tuneable diode laser, and chemical fiber optics, respectively. One of the advantages of optical methane sensors is that they use a non-destructive method of detecting methane, since absorption spectroscopy is a physical analysis method, and not a chemical reaction.…”

Section: Optical Sensorsmentioning

confidence: 99%

A Review of Methane Gas Detection Sensors: Recent Developments and Future Perspectives

et al. 2020

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Methane, the primary component of natural gas, is a significant contributor to global warming and climate change. It is a harmful greenhouse gas with an impact 28 times greater than carbon dioxide over a 100-year period. Preventing methane leakage from transmission pipelines and other oil and gas production activities is a possible solution to reduce methane emissions. In order to detect and resolve methane leaks, reliable and cost-effective sensors need to be researched and developed. This paper provides a comprehensive review of different types of methane detection sensors, including optical sensors, calorimetric sensors, pyroelectric sensors, semiconducting oxide sensors, and electrochemical sensors. The discussed material includes the definitions, mechanisms and recent developments of these sensors. A comparison between different methods, highlighting the advantages and disadvantages of each, is also presented to help address future research needs.

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“…Complex permittivity is a function of both temperature and frequency 17,18 . However, dielectric spectra can be segmented into two frequency ranges following Debye equation 17 . It can be considered as frequency independent at lower frequency range, whereas, it shows frequency dependency at higher range.…”

Section: Design and Operating Principlementioning

confidence: 99%

Design of miniaturized highly sensitive liquid sensor at microwave frequency

Kayal

Shaw

Mitra

2020

Int J RF Microw Comput Aided Eng

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In this paper, we have presented a simple, miniaturized, and highly sensitive liquid sensor, which determines the dielectric properties of liquids at microwave frequency. In the proposed design, the concept of interdigital capacitor (IDC) is employed to construct the sensor. The proposed IDC based sensor responds differently depending on the liquids' dielectric property. The proposed structure utilizes the shift in resonance frequency and peak attenuation as the sensing parameter to determine the complex dielectric permittivity of the unknown liquids. The advantage of the proposed sensor structure lies in its compactness (0.08λ 0 × 0.08λ 0 × 0.003λ 0) and high sensitivity, 0.42%. The designed sensor can also be used in the biomedical field for noninvasive bioliquid characterization.

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Review of Physical Principles of Sensing and Types of Sensing Materials

Cited by 14 publications

References 247 publications

Interaction between Filler and Polymeric Matrix in Nanocomposites: Magnetic Approach and Applications

Interaction between Filler and Polymeric Matrix in Nanocomposites: Magnetic Approach and Applications

A Review of Methane Gas Detection Sensors: Recent Developments and Future Perspectives

Design of miniaturized highly sensitive liquid sensor at microwave frequency

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