Abstract
A microfluidic canopy flow device, formed from a large array of slender polymeric pillars within a glass microchannel, is subjected to viscoelastic flow in the regime of elastic turbulence. The system results in the spontaneous emergence of waves in the form of propagating regions of low flow velocity compared to the bulk, also inducing Monami-like waves in the canopy if the pillars are flexible. Due to the analogies with classical (inertial) canopy turbulence, this new phenomenon is named ``canopy elastic turbulence''.
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