Winged helicopter seeds falling from a Maple tree. 🚁

What appears to be a tiny toy helicopter is actually a highly efficient method for planting a forest. These are maple seeds, called samaras. Their light, wing-shaped structure and slight tilt cause them to spin as they fall, much like a helicopter rotor. This autorotation slows the descent, lets the wind carry them and allows the seed to land much farther from the parent tree than if it simply dropped straight down.

Strategies like this are studied in biomechanics and inspire designs in aviation and engineering. For me, movements like this are a reminder that what we call intelligence is often embedded in form and physics long before we give it a name.

“The internal machinery of life, the chemistry of the parts, is something beautiful. And it turns out that all life is interconnected with all other life.” ~ Richard P. Feynman

#mapletree #helicopterseeds #samaras #seeddispersal #plantbiology #biomechanics

Scattered Maple Whirlers on the Asphalt

A textured asphalt surface dotted with scattered helicopter seeds, their distinctive winged forms creating an organic pattern. The contrast between the dark pavement and the lighter seeds emphasizes their unique shapes. Their random distribution evokes the seasonal cycle, capturing a quiet yet familiar moment in nature.

Benton, Missouri

#Missouri #helicopterseeds #mapleSeeds #background #Pattern #asphalt

https://fineartamerica.com/featured/scattered-maple-whirlers-on-the-asphalt-larry-braun.html

Tiny Winged Circuits Fall With Style

Researchers at Northwestern University is moving the goalposts on how small you can make a tiny flying object down to 0.5 mm, effectively creating flying microchips. Although "falling with style" is probably a more accurate description.

A larger "IoT Macroflyer" with more conventional circuitry

Like similar projects we featured before from the [Singapore University of Technology and Design](https://hackaday.com/2021/08/07/helicopter-seed-robot-can-also-drop-like-a-rock/#more-490156), these tiny gliders are inspired by the "helicopter seeds" produced by various tree species. They consist of a single shape memory polymer substrate, with circuitry consisting of silicon nanomembrane transistors and chromium/gold interconnects transferred onto it.

Looking at the research paper, it appears that the focus at this stage was mainly on the aerodynamics and manufacturing process, rather than creating functional circuitry. A larger "IoT Macroflyer" did include normal ICs, which charges a super capacitor from a set of photodiodes operating in the UV-A spectrum, which acts as a cumulative dosimeter. The results of which can be read via NFC after recovery.

As with other similar projects, the proposed use-cases include environmental monitoring and surveillance. Air-dropping a large quantity of these devices over the landscape would constitute a rather serious act of pollution, for which case the researchers have also created a biodegradable version. Although we regard these "airdropped sensor swarms" with a healthy amount of skepticism and trepidation, we suspect that they will probably be used at some point in the future. We just hope that those responsible would have considered all the possible consequences.

#dronehacks #glider #helicopterseeds #sensornode

Tiny Winged Circuits Fall With Style

Researchers at Northwestern University is moving the goalposts on how small you can make a tiny flying object down to 0.5 mm, effectively creating flying microchips. Although “falling with st…

Hackaday