Monitoring of Water Transportation in Plant Stem With Microneedle Sap Flow Sensor

Baek, Seong-Ho; Jeon, Eunyong; Park, Kyoung Sub; Yeo, Kyung-Hwan; Lee, Junghoon

doi:10.1109/jmems.2018.2823380

Cited by 36 publications

(27 citation statements)

References 22 publications

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“…Different from adhesive thin-film plant wearables detecting on the surfaces of plants, microneedles have shown their ability to reach vasculature inside the plants with minimal invasion, [244,245] thus enabling both to detect sap flow rate and to extract sap and analyze its composition and physicochemical properties such as pH and electric conductivity. Baek and coworkers fabricated a microneedle sap flow sensor based on the modified Granier sap flow method to monitor water transportation in tomato plant stem, [244] which can potentially be used to indicate changes of environmental variables, e.g., solar intensity, humidity, and soil water content. Another metal microneedlebased plant wearable (Figure 10i) with excellent mechanical robustness was developed, [246] capable of repeated insertion into sorghum tissues without deformation.…”

Section: Plant Wearablesmentioning

confidence: 99%

Soil Sensors and Plant Wearables for Smart and Precision Agriculture

et al. 2021

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a compelling need to utilize advanced technologies in the agriculture sector to increase agricultural productivity and reduce food losses to guarantee food security. [2] In this regard, "smart agriculture" or "precision agriculture" has been attracting increasing attention due to its capability for using less to grow more compared to traditional agricultural practices. In addition, it improves the quality of the work environment and social aspects of farming, ranching, and other relevant professions. [4] Smart agriculture comprises a set of technologies that combines sensors, information systems, enhanced machinery, and informed management to optimize production by accounting for variabilities and uncertainties within sustainable agricultural systems. [3][4][5] Among the set of technologies, advanced sensing systems that monitor soil health and conditions and crop developments are of paramount importance because they collect and evaluate critical data for decision making and management, especially when crop growth conditions vary considerably over space and time. Spatial variation may result from soil properties, diseases, weeds, pests, and previous land management. In particular, some soil properties (e.g., moisture, pH, nutrients) and plant diseases may form long-term spatial patterns. Temporal variability arises from weather patterns and management practices. In summary, the soil properties relevant to crop growth include a range of soil conditions including soil gas, moisture, temperature, nutrients, pH, and pollutants in the soil (Figure 1). [6,7] Monitoring the soil conditions will provide key information not only to improve resource utilization to maximize farming outputs and minimize environmental side effects but also to build site-specific databases of relationships between soil conditions and plant growth for intelligent and sustainable agriculture systems. Traditionally, soil properties are measured by soil sampling and offsite laboratory analysis or by on-site measurement to provide an extensive knowledge of soil information. [8] Seasonally varying crop growth conditions, such as water stress, lack of nutrients, diseases, weeds, and insects, are evaluated by visual inspection and laboratory analysis of plant tissues. The relatively periodically coarse sampling/measurement rate of these conventional strategies may not be sufficient to reveal variation at the appropriate spatial and temporal resolution. Novel technologies for collecting soil information with sufficient spatiotemporal resolutions are in demand to build efficient smart or precision agriculture systems. With the Soil sensors and plant wearables play a critical role in smart and precision agriculture via monitoring real-time physical and chemical signals in the soil, such as temperature, moisture, pH, and pollutants and providing key information to optimize crop growth circumstances, fight against biotic and abiotic stresses, and enhance crop yields. Herein, the recent advances of the important soil sensors in agricultural applications, in...

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Section: Plant Wearablesmentioning

confidence: 99%

Soil Sensors and Plant Wearables for Smart and Precision Agriculture

et al. 2021

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“…Microneedle systems have been employed for various sensing purposes within plant physiology [31,32] but, this is the first report highlighting the use of composite patches for voltammetric sensing. While the work detailed here has demonstrated the capability of the MN systems for measuring pH, it is clear that the electroanalytical capabilities go beyond this initial…”

Section: Analysis Of Tomato Skinmentioning

confidence: 99%

Design of composite microneedle sensor systems for the measurement of transdermal pH

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McConville

McGlynn

et al. 2019

Materials Chemistry and Physics

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Carbon loaded polystyrene microneedle patches have been prepared using silicone micromoulding techniques and the ability of the needles to serve as viable transdermal sensors has been evaluated. The population of quinone groups at the interface of the embedded carbon nanoparticles was increased through anodisation and their pH dependent redox transitions exploited as the basis of a reagentless pH sensor. The peak position of the quinone oxidation process was found to shift in accordance with Nernstian behaviour and the influence of penetration depth on response has been investigated. The analytical applicability of the microneedle electrode patch was critically evaluated through using tomato skin as model transdermal skin mimic. Despite the increased complexity of the matrix, the microneedle sensor response was found to compare favourably with conventional/commercial pH probes.

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“…As this approach gained traction, MNs were used for DNA extraction from leaves, [ 9 ] EIS measurement of plant tissue to probe the content of the EF [ 10,11 ] and to assess sap flow through the plant's stem. [ 12 ]…”

Section: Introductionmentioning

confidence: 99%

Robust, Long‐Term, and Exceptionally Sensitive Microneedle‐Based Bioimpedance Sensor for Precision Farming

et al. 2021

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Precision farming has the potential to increase global food production capacity whilst minimizing traditional inputs. However, the adoption and impact of precision farming are contingent on the availability of sensors that can discern the state of crops, while not interfering with their growth. Electrical impedance spectroscopy offers an avenue for nondestructive monitoring of crops. To that end, it is reported on the deployment of impedimetric sensors utilizing microneedles (MNs) that can be used to pierce the waxy exterior of plants to obtain sensitive impedance spectra in open‐air settings with an average relative noise value of 3.83%. The sensors are fabricated using a novel micromolding and release method that is compatible with UV photocurable and thermosetting polymers. Assessments of the quality of the MNs under scanning electron microscopy show that the replication process is high in fidelity to the original design of the master mold and that it can be used for upward of 20 replication cycles. The sensor's performance is validated against conventional planar sensors for obtaining the impedance values of Arabidopsis thaliana. As a change is detected in impedance due to lighting and hydration, this raises the possibility for their widespread use in precision farming.

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Monitoring of Water Transportation in Plant Stem With Microneedle Sap Flow Sensor

Cited by 36 publications

References 22 publications

Soil Sensors and Plant Wearables for Smart and Precision Agriculture

Soil Sensors and Plant Wearables for Smart and Precision Agriculture

Design of composite microneedle sensor systems for the measurement of transdermal pH

Robust, Long‐Term, and Exceptionally Sensitive Microneedle‐Based Bioimpedance Sensor for Precision Farming

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