Augmenting The Living Plant Mesophyll Into A Photonic Capacitor
SCIENCE ADVANCES(2021)
Abstract
Living plants provide an opportunity to rethink the design and fabrication of devices ordinarily produced from plastic and circuit boards and ultimately disposed of as waste. The spongy mesophyll is a high-surface area composition of parenchyma cells that supports gas and liquid exchange through stomata pores within the surface of most leaves. Here, we investigate the mesophyll of living plants as biocompatible substrates for the photonic display of thin nanophosphorescent films for photonic applications. Size-sorted, silica-coated 650 +/- 290 -nm strontium aluminate nanoparticles are infused into five diverse plant species with conformal display of 2-mu m films on the mesophyll enabling photoemission of up to 4.8 x 10(13) photons/second. Chlorophyll measurements over 9 days and functional testing over 2 weeks at 2016 excitation/emission cycles confirm biocompatibility. This workZ establishes methods to transform living plants into photonic substrates for applications in plant-based reflectance devices, signaling, and the augmentation of plant-based lighting.
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Key words
plant mesophyll
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