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Category: 3D printing – Page 48

Charles Goulding and Ryan Donley of R&D Tax Savers discuss 3D printing as it impacts chocolateering.

Chocolate has been around for millennia now, dating as far back as early 1750 B.C., presumably in the area of the Gulf Coast of Vera Cruz where cocoa beverages or chocolate drinks were used in ceremonies by pre-Olmec peoples. Evidence suggests cacao pods may have even been used in alcoholic beverages as early as 1400 B.C. Today, the cacao bean has evolved to encompass a $50 billion chocolate industry worldwide that consists of edible chocolate confections being brought to mass markets.

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Relativity Space, a growing startup that aims to almost entirely 3D-print rockets, on Wednesday announced it struck another major launch deal, as well as an agreement with the U.S. Air Force, to build a launchpad on the California coastline.

The Los Angeles-based rocket builder signed an agreement with satellite operator Iridium Communications, to launch up to six satellites as needed as early as 2023. Over the course of more than half a dozen launches with SpaceX, Iridium completed its second-generation satellite constellation in January 2019, with 66 operational satellites and 9 spares in orbit.

The Iridium deal means Relativity now has agreements to launch for five different companies, having previously announced contracts with Canadian satellite communications operator Telesat, California-based Momentus, Thai satellite broadband company mu Space and Seattle-based Spaceflight Inc. All the contracts have remarkably come before Relativity’s first launch, which is scheduled to happen before the end of 2021.

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Brilliantly colored chameleons, butterflies, opals—and now some 3D-printed materials—reflect color by using nanoscale structures called photonic crystals.

A new study that demonstrates how a modified 3D-printing process provides a versatile approach to producing multiple colors from a single ink is published in the journal Science Advances.

Some of the most in nature come from a nanoscale phenomenon called structural coloration. When reflect off these periodically placed structures located in the wings and skins of some animals and within some minerals, they constructively interfere with each other to amplify certain wavelengths and suppress others. When the structures are well ordered and small enough—about a thousand times smaller than a , the researchers said—the rays produce a vivid burst of color.

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Their new approach to 3D bioprinting and allows for non-invasive tissue growth and wound healing. It works through injecting bioink cells, the additive material traditionally used in 3D bioprinting, under the skin and using near-infrared light to penetrate the tissue and transfer customizable building designs — like an ear or an abstract shape — to newly injected cells.

The ear began to form in just 20 seconds.

Using a new approach to 3D bioprinting researchers have designed a way to non-invasively grow a wide range of customizable tissue under living skin.

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Biological tissues have evolved over millennia to be perfectly optimized for their specific functions. Take cartilage as an example. It’s a compliant, elastic tissue that’s soft enough to cushion joints, but strong enough to resist compression and withstand the substantial load bearing of our bodies: key for running, jumping, and our daily wear and tear.

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When it comes to monitoring electrical activity in the brain, patients typically have to lie very still inside a large magnetoencephalography (MEG) machine. That could be about to change, though, as scientists have developed a new version of a wearable helmet that does the same job.

Back in 2018, researchers at Britain’s University of Nottingham revealed the original version of their “MEG helmet.”

The 3D-printed device was fitted with multiple sensors that allowed it to read the tiny magnetic fields created by brain waves, just like a regular MEG machine. Unlike the case with one of those, however, wearers could move around as those readings were taking place.

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Shrimp, lobsters and mushrooms may not seem like great tools for the battlefield, but three engineers from the University of Houston are using chitin—a derivative of glucose found in the cellular walls of arthropods and fungi—and 3D printing techniques to produce high-impact multilayered coatings that can protect soldiers against bullets, lasers, toxic gas and other dangers.

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