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Breakthrough Device Brings Scientists a Step Closer to Successfully Growing Plants in Space

April 21, 2024
in Science
Breakthrough Device Brings Scientists a Step Closer to Successfully Growing Plants in Space
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Polymer Based Stretchable Electrodes Plants

Researchers at the University of Illinois have created stretchable sensors that can monitor plant growth and transmit data remotely, overcoming initial challenges to potentially revolutionize agricultural practices on Earth and in space. Credit: NASA Marshall Space Flight Center

Researchers from the University of Illinois Urbana-Champaign have developed new, highly flexible sensors capable of monitoring and transmitting data on plant growth autonomously, according to a paper published in the journal Device.

The polymer sensors are resilient to humidity and temperature, can stretch over 400% while remaining attached to a plant as it grows, and send a wireless signal to a remote monitoring location, said chemical and biomolecular engineering professor Ying Diao, who led the study with plant biology professor and department head Andrew Leakey.

The study details some of the early results of a NASA grant awarded to Diao to investigate how wearable printed electronics will be used to make farming possible in space.

“This work is motivated by the needs of astronauts to grow vegetables sustainably while they are on long missions,” she said.

Diao’s team approached this project using an Earth-based laboratory to create a highly dependable, stretchable electronic device – and its development did not come easily, she said.

“Honestly, we began this work thinking that this task would only take a few months to perfect. However, we quickly realized that our polymer was too rigid,” said Siqing Wang, a graduate student and first author of the study. “We had to reformulate a lot of the components to make them more soft and stretchable and adjust our printing method to control the assembly of the microstructures inside the device so that they did not form large crystals during the printing and curing process.”

The team landed on a very thin film device that helps restrain the crystal growth during assembly and printing.

Development and Results

“After addressing the stretchability and assembly issues, we had to tackle the problems that come with working with wearable electronics in high humidity and under rapid growth rates,” Wang said. “We needed reproducible results so we could not have the sensors fall off or electronically fail during the growth experiments. We finally came up with a seamless electrode and interface that was not affected by the demanding conditions.”

The ‘Stretchable-Polymer-Electronics-based Autonomous Remote Strain Sensor,’ or SPEARS2 – is the product of three years of hard work, proving that applied science rarely experiences eureka moments.

“It is an exciting technical advance in our ability to perform precise, noninvasive measurements of plant growth in real time. I look forward to seeing how it can complement the latest tools for interrogating genomic and cellular processes,” Leakey said.

Diao also said she is excited to uncover all of the ways this research will continue to progress.

For example, this study looks at plants like corn that grow primarily upward. However, the researchers plan to advance their electronics printing methodology to create a system that can monitor upward and outward growth.

The team said they are also working toward the ability to sense and monitor chemical processes remotely.

“I think the wearable electronics research community has ignored plants for too long,” Diao said. “We know that they are experiencing a lot of stress during climate adaptation, and I think soft electronics can play a bigger role in advancing our understanding so we can ensure that plants are healthy, happy and sustainable in the future – whether that is in space, on other planets or right here on Earth.”

Reference: “Highly stretchable, robust, and resilient wearable electronics for remote, autonomous plant growth monitoring” by Siqing Wang, Bindu Edupulapati, Jackie M. Hagel, Justin J. Kwok, Jennifer C. Quebedeaux, Azzaya Khasbaatar, Janice M. Baek, Daniel W. Davies, Kavinraaj Ella Elangovan, Raymond M. Wheeler, Andrew D.B. Leakey, Curtis W. Hill, Kosta A. Varnavas and Ying Diao, 13 March 2024, Device.
DOI: 10.1016/j.device.2024.100322

NASA and Beckman supported this study.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/breakthrough-device-brings-scientists-a-step-closer-to-successfully-growing-plants-in-space/

Tags: Breakthroughdevicescience
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