A study of plant growth regulators detection based on terahertz time-domain spectroscopy and density functional theory

Du, Xiaoxue; Zhang, Xiaodong; Ma, Guojun; Liu, Yong; Wang, Bin; Mao, Hanping

doi:10.1039/d1ra05222e

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…Thus, the minimum daminozide concentration detected by the metamaterial is 0.05 mg/L, having a better sensitivity than those in previously reported studies using THz-DTS [34] . In addition, the THz time domain spectrogram, shown in Figure 4d, reveals that with the increase of the concentration of daminozide, the amplitude time-shifted successively to the right, indicating that with the increase of the concentration of daminozide, the amplitude time of the samples showed a delayed increase.…”

Section: Analysis Of Experimental Resultsmentioning

confidence: 49%

Highly sensitive detection of daminozide using terahertz metamaterial sensors

Mao¹,

Du²,

Yan³

et al. 2022

International Journal of Agricultural and Biological Engineering

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In order to solve the problems of low sensitivity and complex sample pretreatment in traditional detection, a method was proposed in this study to detect daminozide using terahertz combined with a metamaterial sensor, which enables real-time and label-free molecular detection with high sensitivity. The correlation between the transmission frequency shift and absorbance of daminozide solution at different concentrations was analyzed. The simulation and experimental results showed that this metamaterial sensor could achieve highly sensitive sensing of daminozide solutions at 0.05 mg/L. The maximum quality factor (Q max ) of the two peaks could reach 5.78 and 13.05, and the maximum figure of merit (FOM) of the two peaks can reach 0.82 and 1.72. The maximum sensitivity of two resonance peaks reached 38.148 GHz/(mg•L) and 133.516 GHz/(mg•L) when the concentration of daminozide in the solution was 2000 mg/L. There was an obvious positive correlation between the transmission and transmission, frequency shift and frequency shift, and absorbance and absorbance of the resonance peak of daminozide solutions. Therefore, this platform not only opens up new possibilities for the microanalysis of the chemical composition of substances in solutions but also provides a valuable reference for the design of other metamaterial-based sensors in the field of food safety.

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Section: Analysis Of Experimental Resultsmentioning

confidence: 49%

Highly sensitive detection of daminozide using terahertz metamaterial sensors

Mao¹,

Du²,

Yan³

et al. 2022

International Journal of Agricultural and Biological Engineering

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“…Terahertz radiation may be able to penetrate the soil to a considerable depth and, having in mind its effects on tissues of animals and plants alike, disturb local ecological systems. This raises concerns regarding the rising trend of new agricultural tools that implement this type of EM radiation as a means to keep track of plant development or soil content in microplastics [71][72][73][74][75][76]. Locations suffering from a generally dry climate or desertification are at the highest risk of being affected by THz due to the lack of water that could otherwise act as a barrier.…”

Section: Environmental Effectsmentioning

confidence: 99%

Introduction to the Biological Effects of Terahertz Radiation

Bucur-Portase¹

2023

Trends in Terahertz Technology

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Terahertz (THz) radiation has been noted to affect biological organisms to a unique degree with various effects ranging from modifications brought to protein activity to epigenetic changes that lead to altered metabolism or reproduction. These effects are classified into thermal and non-thermal, with the former being caused by THz’s capacity to induce localised thermal changes while the latter involves more complex interactions with cells’ macromolecules which are poorly understood. Terahertz’s ability to enhance actin polymerisation and alter gene expression leads to a number of possible applications in agriculture, as it has been observed that certain plant species have higher growth speeds post-exposure, and medicine, with cancer’s rapid division being possibly slowed down.

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Unleashing the potential of plant growth regulators in agriculture

Hao

2024

Advanced Agrochem

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A study of plant growth regulators detection based on terahertz time-domain spectroscopy and density functional theory

Abstract: Terahertz technology is receiving increasing attention for its use as an efficient non-destructive, non-contact and label-free optical method for qualitative and quantitative detection.

Cited by 5 publications

References 39 publications

Highly sensitive detection of daminozide using terahertz metamaterial sensors

Highly sensitive detection of daminozide using terahertz metamaterial sensors

Introduction to the Biological Effects of Terahertz Radiation

Unleashing the potential of plant growth regulators in agriculture

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