THz- TDS Measurements of Hydration State of Bio Related Materials and Data Analysis by Machine Learning

Kawakami, Daiki; Tabata, Hitoshi

doi:10.1109/irmmw-thz.2018.8509869

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…By analysing the big data obtained during experiments, which may include THz spectra, AI and ML algorithms can determine the most promising reaction conditions and optimise the process to produce high-quality biopolymers with the desired properties. THz spectroscopy and machine learning analysis were used to evaluate the hydration properties of biological materials that can be used in bio-medical fields [219]. THz-TDS was used with feed-forward neural networks to analyse the animal origin of gelatine, which is a non-toxic natural biomacromolecule, often used as an ingredient for biopolymer composites [220].…”

Section: Ai-based Thz Analysis Of Bioplasticsmentioning

confidence: 99%

Review of Bioplastics Characterisation by Terahertz Techniques in the View of Ensuring a Circular Economy

Abina,

Korošec,

Puc

et al. 2023

Photonics

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The increasing scarcity of natural resources, worsening global climate change, environmental degradation, and rising demand for food are forcing the biotechnology and plastics industries to seek and apply circular economy models that would lead to a sustainable transition in the production and use of bioplastics. Circular economy models can improve the economic productivity of bio-based plastics and have a positive impact on the environment by reducing conventional plastic waste and the consumption of petrochemical feedstocks for plastic production. In addition, some agricultural wastes that have the potential to be used as bioplastics can be reused. Terahertz (THz) systems are already used in the plastics and rubber industries for non-destructive testing, detection, imaging, and quality control. Several reports have highlighted the potential applications of THz spectroscopy and imaging in polymer analysis and plastics characterisation. This potential is even greater with chemometric methods and artificial intelligence algorithms. In this review, we focus on applications that support the transformation of the biotechnology sector to the circular economy, particularly via the transition from conventional plastics to bioplastics. In this review, we discuss the potential of THz systems for the characterisation and analysis of bioplastics and biopolymers. The results of previous studies on biopolymers in the THz frequency range are summarised. Furthermore, the potential of using artificial intelligence approaches such as machine learning as advanced analytical methods in THz spectroscopy and imaging, in addition to the conventionally used chemometric methods, is discussed. The results of this review highlight that THz technology can contribute to closed technological circles in important areas of biotechnology and the related plastics and rubber industries.

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Section: Ai-based Thz Analysis Of Bioplasticsmentioning

confidence: 99%

Review of Bioplastics Characterisation by Terahertz Techniques in the View of Ensuring a Circular Economy

Abina,

Korošec,

Puc

et al. 2023

Photonics

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“…Complex permittivity as function of many factors e.g. water content, temperature, salinity and pressure are tending to be studied in broader frequency ranges [34], [35]. The open-ended coaxial probe is very attractive due to its applicability to nondestructive measurements of complex permittivity in a wide microwave frequency range, which can cover the dispersive frequencies of both hydrate and liquid solution simultaneously(1MHz-13.6GHz) [27].…”

Section: Introductionmentioning

confidence: 99%

Study on the Formation and Disassociation Process of Hydrate in Porous Media by Permittivity Dispersion Measurement

2019

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To develop a more efficient and environmentally friendly exploitation and production method of gas hydrate, a better understanding of the formation and disassociation process mechanism of gas hydrate in porous media is indispensable. The permittivity spectra of gas hydrate differs from water, oil, ice and gas, and thus measurement of its permittivity properties is a potential approach to detect hydrate existence and content. In this study, THF (tetrahydrofuran) was used as the hydrate former. The permittivity dispersion of hydrate in quartz sand was measured with open-ended coaxial method in the processes of formation and disassociation at a wide radio frequency band from 1MHz to 3GHz. From the dielectric measurements, the hydrate concentration in the porous media was identified with dispersion properties, and the characteristic of the permittivity response upon the hydrate formation and dissociation were also provided. Moreover, by applying dielectric mixing models, the fractions of the solution and hydrate could be estimated. These results implied that the permittivity dispersion could be an effective monitor for the formation and disassociation of the hydrate, and hydrate content could be evaluated in real time with complex permittivity spectra. INDEX TERMSComplex permittivity, dielectric measurement, dielectric dispersion, gas hydrate, open-end coaxial line, porous media.

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THz- TDS Measurements of Hydration State of Bio Related Materials and Data Analysis by Machine Learning

Cited by 2 publications

References 2 publications

Review of Bioplastics Characterisation by Terahertz Techniques in the View of Ensuring a Circular Economy

Review of Bioplastics Characterisation by Terahertz Techniques in the View of Ensuring a Circular Economy

Study on the Formation and Disassociation Process of Hydrate in Porous Media by Permittivity Dispersion Measurement

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