Smart plant-wearable biosensor for in-situ pesticide analysis

Zhao, Fengnian; He, Jianwei; Li, Xunjia; Bai, Yunpeng; Ying, Yibin; Ping, Jianfeng

doi:10.1016/j.bios.2020.112636

Cited by 145 publications

(91 citation statements)

References 38 publications

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“…Future work will be developing electrodes that can accommodate plant growth for longer periods of monitoring and fast-growing seedlings. Our work sets the scene for future device development toward smart plant monitoring and modulation, which will find wide applications in environmental sensing, [7] crop health monitoring, [11] plant physiology regulation and modification, [9,11,[46][47][48] and augmented human-plant interaction. [8,10] Using hairy plants as a model system, we proved the efficacy of morphable materials that involve liquid-to-solid (or semisolid) transition in bridging textured biological tissues.…”

Section: Resultsmentioning

confidence: 99%

A Morphable Ionic Electrode Based on Thermogel for Non‐Invasive Hairy Plant Electrophysiology

Luo

Lin

et al. 2021

Advanced Materials

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Plant electrophysiology lays the foundation for smart plant interrogation and intervention. However, plant trichomes with hair‐like morphologies present topographical features that challenge stable and high‐fidelity non‐invasive electrophysiology, due to the inadequate dynamic shape adaptability of conventional electrodes. Here, this issue is overcome using a morphable ionic electrode based on a thermogel, which gradually transforms from a viscous liquid to a viscoelastic gel. This transformation enables the morphable electrode to lock into the abrupt hairy surface irregularities and establish a conformal and adhesive interface. It achieves down to one tenth of the impedance and 4–5 times the adhesive strengths of conventional hydrogel electrodes on hairy leaves. As a result of the improved electrical and mechanical robustness, the morphable electrode can record more than one order of magnitude higher signal‐to‐noise ratio on hairy plants and maintains high‐fidelity recording despite plant movements, achieving superior performance to conventional hydrogel electrodes. The reported morphable electrode is a promising tool for hairy plant electrophysiology and may be applied to diversely textured plants for advanced sensing and modulation.

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Section: Resultsmentioning

confidence: 99%

A Morphable Ionic Electrode Based on Thermogel for Non‐Invasive Hairy Plant Electrophysiology

Luo

Lin

et al. 2021

Advanced Materials

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“…[ 9,28 ] Different thin‐layer sensors and electronic systems based on materials like conductive polymers and graphene operating on the plant surface have been developed for measuring for example humidity or concentrations of certain biomolecules with great potential for agricultural monitoring. [ 29–33 ] Especially thin film electrodes based on graphene and carbon nanotubes, [ 34–36 ] silver inks [ 37 ] and silver nanowires, [ 38 ] conductive polymers, [ 29,39 ] and liquid metals [ 40 ] have shown advantages for being patternable into various shapes, bearing an excellent applicability on plant surfaces, having physiological sensing capability, and some are transparent or semitransparent. Yet, the development of techniques for recording intrinsic electrophysiological signals on plants and using them in biohybrid technologies remains limited to a few examples whereas the long‐established research on the biological aspects on plant's electrical signals started back in the 19th century by observations of electrical signals in Venus flytraps ( Dionaea muscipula ) by Sanderson.…”

Section: Introductionmentioning

confidence: 99%

Ultraconformable, Self‐Adhering Surface Electrodes for Measuring Electrical Signals in Plants

Meder

Saar

Taccola

et al. 2021

Adv Materials Technologies

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The electrical signals in plant's physiological processes are of great interest in biology, biohybrid robotics, and sensors for interfacing the living organisms with an electronic readout and control. This paper reports on the application of conformable, self‐adhering surface electrodes for the measurement and bidirectional stimulation of electrical signals in plants. The inkjet‐printed poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate based electrodes are <3 µm thick, light‐weight, soft and flexible, and can be easily and non‐invasively transferred onto plant's outer organs for surface potential recordings due to their realization on tattoo transfer paper. The devices prove to be extremely versatile for analyzing electrical signals in Dionaea muscipula, Arabidopsis thaliana, and Codariocalyx motorius and for stimulating mechanical responses in D. muscipula. A benefit over traditional electrodes is the van der Waals self‐adherence of the thin electrodes, their intrinsic flexibility and adaptation also on small leaves while providing excellent readout. The same electrode allows long‐term multicycle measurements over at least 10 days and, moreover, straightforward recordings on fast‐moving organs such as snapping fly traps and endogenously oscillating leaflets. The results confirm that self‐adhering soft organic electronics are particularly suitable for plant electrical signal analysis when easy‐application, self‐adaptation, and long‐term performance are required in plant science, biohybrid robotics, and biohybrid sensors.

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“…Another study presented a multimodal plant healthcare sensor directly printed on the Scindapsus aureus leaves to measure growth and ambient T combined with light intensity and leaf hydration reaching interesting results: the leaf grew more in width than in length and more during the night than the day when T and light decrease, and consequently, the leaf hydration increases [ 29 ]. As in our study, both indoor and outdoor tests were carried out to assess the performance of the proposed system [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

“…In contrast to conventional methods, recently, novel techniques like wearables and skin-mountable devices developed for human beings have been extended to plants [ 14 , 23 ]. In particular, thanks to the advance of flexible electronics, small, stretchable, and miniaturized sensors have been developed to be directly attached to the plants or printed on their leaves for monitoring the plant’s health and microclimate changes [ 14 , 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Plant Wearable Sensors Based on FBG Technology for Growth and Microclimate Monitoring

Presti

Cimini

Massaroni

et al. 2021

Sensors

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Plants are primary resources for oxygen and foods whose production is fundamental for our life. However, diseases and pests may interfere with plant growth and cause a significant reduction of both the quality and quantity of agriculture products. Increasing agricultural productivity is crucial for poverty reduction and food security improvements. For this reason, the 2030 Agenda for Sustainable Development gives a central role to agriculture by promoting a strong technological innovation for advancing sustainable practices at the plant level. To accomplish this aim, recently, wearable sensors and flexible electronics have been extended from humans to plants for measuring elongation, microclimate, and stressing factors that may affect the plant’s healthy growth. Unexpectedly, fiber Bragg gratings (FBGs), which are very popular in health monitoring applications ranging from civil infrastructures to the human body, are still overlooked for the agriculture sector. In this work, for the first time, plant wearables based on FBG technology are proposed for the continuous and simultaneous monitoring of plant growth and environmental parameters (i.e., temperature and humidity) in real settings. The promising results demonstrated the feasibility of FBG-based sensors to work in real situations by holding the promise to advance continuous and accurate plant health growth monitoring techniques.

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Smart plant-wearable biosensor for in-situ pesticide analysis

Cited by 145 publications

References 38 publications

A Morphable Ionic Electrode Based on Thermogel for Non‐Invasive Hairy Plant Electrophysiology

A Morphable Ionic Electrode Based on Thermogel for Non‐Invasive Hairy Plant Electrophysiology

Ultraconformable, Self‐Adhering Surface Electrodes for Measuring Electrical Signals in Plants

Plant Wearable Sensors Based on FBG Technology for Growth and Microclimate Monitoring

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