Adafruit Holiday Shipping Deadlines 2018: Attention! Please place all UPS Next Day orders by Monday 12/17/2018 11 AM EST
0

Nonadhesion Technology Based On The Lotus Leaf: Yogurt Lid Licking Be Banished #Biomimicry

Untitled

Nonadhesion technology based on the lotus leaf. via asia.nikkei

What does the peel-off lid of a cup of yogurt have in common with a smartphone screen? They are both likely to benefit from next-generation nonadhesion technologies. These new ways of preventing things from sticking are also beneficial beyond the consumer sphere: Venice uses the new technologies to prevent flooding.

Toyo Aluminium wants you to wave goodbye to licking your yogurt lid.
Taking inspiration from nature, cutting-edge nonadhesion technologies may not lead to hit products, but it is likely to tweak designs on many everyday items.

Part of the yogurt eating ritual has always been licking the food off the foil lid. Over the course of a year, the yogurt stuck to lids worldwide is equivalent to the volume consumed in Africa, according to a calculation by Toyo Aluminium.

Morinaga Milk Industry is doing something about that: Its lids peel off clean with no stuck yogurt.

The company uses a special lid developed in cooperation with Toyo Aluminium. It is based on a packaging technology Toyo calls “Toyal Lotus.” The material’s structural inspiration was the lotus leaf, which is famous for its ability to shed water and remain dry.

Fresh angles

How does the lotus leaf do this? Its structure pushes liquids up into droplets because of its very high contact angle.

Imagine a water droplet on a table, and consider the angle between the outer edge of this drop and the surface of the table. If the contact angle is smaller than 90 degrees, water has a tendency to spread out and wet the surface. On the other hand, a higher contact angle means the surface is more water-repellent, and will turn the liquid into droplets.

The Morinaga yogurt lid stays clean because its design, like that of a lotus leaf, creates a large contact angle for liquids. “The contact angle for a water droplet on a lotus leaf is 150 degrees,” said Toyo executive Masashi Yamamoto. “To repel water, a similarly large contact angle is needed.” The company has made the angle larger, at 170 degrees.

A water-repellant material, in addition, coats the yogurt lid, which is also processed to have microscopic protrusions similar to those on lotus leaves. These protrusions provide pockets for air that work to push back up against any liquid droplets that could fill the protrusions. Toyal Lotus is designed to keep in large layers of air.

Other yogurt makers have begun using Toyo’s technology.

Read more


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 9,200+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Japanese word working and more in December’s issue of HackSpace magazine!

Wearables — Solder-less magic

Electronics — = != ==.

Biohacking — Finding Bliss with Anandamide

Python for Microcontrollers — sysfs is dead! long live libgpiod! libgpiod for linux & Python running hardware @circuitpython @micropython @ThePSF #Python @Adafruit #Adafruit

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.