Self-healing and other smart properties of the products of tomorrow (Authentise Weekly News-In-Review – #108)

Material sciences is one of the greatest contributors for the awe-inspiring new papers that are being released in recent times. Not only are we discovering fundamental new properties of established materials, but new meta-materials are also shining a new light on the possibilities ahead. Coatings that are capable of self-repair after scratches or cracks, textiles that change the knitting density based on humidity and more. 3D printing is also playing an interesting part here because it is both player and beneficiary of these discoveries: in some applications, the materials are born out of 3D printing’s ability to combine different materials in one new compound, in others these materials solve some of the technology’s major hurdles, like overhand printing or structural performance.

 

Fluid-inspired material self-heals before your eyes

Engineers have developed a new coating strategy for metal that self-heals within seconds when scratched, scraped or cracked. The novel material could prevent these tiny defects from turning into localized corrosion, which can cause major structures to fail.

Read more about it here.

 

Using 3D Printing, Researchers Combine Graphene Oxide, Seaweed- Derived Material to Create Smart Hydrogel

Researchers from Brown University are utilizing graphene oxide to strengthen alginate—a natural material derived from seaweed—and create a unique hydrogel that will become stiffer and softer in response to different chemical treatments. This innovation could be used in several applications, including to make more robust smart materials that react to their surroundings in real time.

Read the full article here.

 

Smart fabric changes thermal properties based on environment

The new fabric being developed by University of Maryland scientists. Credit: Faye Levine, University of Maryland.

For the first time, scientists have devised a fabric that can dynamically alter its thermal properties in response to the environment. The automatic thermal regulation means people would no longer have to take off clothes when it’s hot or put clothes on when it’s too cold. The breakthrough lies in cleverly engineering the fabric with two different types of synthetic yarn — one absorbs water, while the other repels it.

Read more on ZME Science.

 

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Week in Review: September 19th to 26th – AM Materials’ Expansion

Hello, welcome to another week in review brought to you by Authentise.

This week got a lot of buzz going for breakthroughs and materials bringing excitement to the world of AM: we got 3D printed cemented carbide tools courtesy of Fraunhofer Institute for Ceramic Technologies’ (IKTS) new binderjetting technique, bioengineered plastic spitting bacteria to supply future space missions and a whopping AM breakthrough in flexible thermoelectric devices which promises plummeting prices for coming IoT clothing and more.

Let us begin.

 

Fraunhofer IKTS develops 3D printed carbide tools with adjustable mechanical properties

Fraunhofer IKTS will present 3D printed cemented carbide (hard metal) tools at the World PM2016 Congress & Exhibition… IKTS scientists used a binder jetting 3D printing method to produce the tools. According to the researchers, these 3D printed tools are of comparable quality to those produced using conventional methods, and can be made into more complex shapes.

Read the full article here.

 

Bioengineered bacteria could be used to 3D print food and tools on Mars

cosmocrops d printing best picture the martian

A Danish research team is working on a synthetic biology project called CosmoCrops, which hopes to use bacteria to make it possible to 3D print everything needed for a respectable space mission, using a cutting-edge co-culturing system. To this end, the team has designed a special kind of bioreactor and has bioengineered bacteria that can be used to produce the necessary 3D-printing materials.

Read more at Digital Trend.

 

Nano Dimension paves way for wearables by 3D printing conductive patterns onto fabric

Israeli PCB 3D printing pioneer Nano Dimension has just successfully 3D printed conductive patterns made from silver nanoparticles onto specially treated fabric. This achievement, realized in collaboration with an unnamed leading European functional textiles company, paves the way for sensors and electronics that are actually part of your clothing. It proves that even functional and ‘smart’ fabrics, packed with sensors, are realistic possibilities and do not need to be limited by movement, folding or wearing.

Read the full article here.

 

Research explores thermoelectric screen printing

In work led by professor Yanliang Zhang at Boise State University, high-performance and low-cost flexible thermoelectric films and devices were fabricated by an innovative screen-printing process that allows for direct conversion of nanocrystals into flexible thermoelectric devices. Based on initial cost analysis, the screen-printed films can realize thermoelectric devices at 2-3 cents per watt, an order of magnitude lower than current state-of-the-art commercial devices.

Read more about the breakthrough at ScienceDaily.

 

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