Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: materials – Page 281

A team of Lawrence Livermore National Laboratory researchers has demonstrated the 3D printing of shape-shifting structures that can fold or unfold to reshape themselves when exposed to heat or electricity. The micro-architected structures were fabricated from a conductive, environmentally responsive polymer ink developed at the Lab.

In an article published recently by the journal Scientific Reports (link is external), Lab scientists and engineers revealed a strategy for creating boxes, spirals and spheres from shape memory polymers (SMPs), bio-based “smart” materials that exhibit shape-changes when resistively heated or when exposed to the appropriate temperature.

Read more

Scientists have managed to develop a novel method to grow stable, ultra-long 1D carbon chains of a material that is twice as strong as carbon nanotubes and far stronger than diamonds.

Elemental carbon is extremely versatile, and scientists have long been able to create new carbon allotropes that make for super durable and multi-functioning materials—such as everyone’s favorite material, graphene.

The “carbon family” is one very resourceful family. But even with all these developments, carbyne remained elusive. In fact, it is the only form of carbon that has not been synthesized, even though researchers have been studying its properties for over 50 years.

Read more

Meet the punk rock version of Device making via Q-Dots.

A wide range of materials can now be synthesized into semiconducting quantum dots. Because these materials grow from solutions, there is scope to combine quantum dots into devices by using simple, low-cost manufacturing processes. Kagan et al. review recent progress in tailoring and combining quantum dots to build electronic and optoelectronic devices. Because it is possible to tune the size, shape, and connectivity of each of the quantum dots, there is potential for fabricating electronic materials with properties that are not available in traditional bulk semiconductors.

Science, this issue p. [885][1]

[1]: http://www.sciencemag.org/content/353/6302/885.full

Continue reading “Building devices from colloidal quantum dots” | >

Scientists in Singapore have created a new type of concrete that bends, but is more durable and sustainable than the typical concrete.

Scientists at Nanyang Technological University (NTU)-JTC Industrial Infrastructure Innovation Center have created a new type of concrete that is flexible and more durable than regular concrete. They call it ConFlexPave.

According to its inventors, ConFlexPave can greatly reduce the weight and thickness of precast pavement slabs, making them lighter and easier to transport and install — thus, halving the time needed for road work and new pavement. Also, because it is more sustainable, it requires less maintenance compared to conventional concrete.

Read more

It aims to introduce engineered optical materials (EnMats) and associated design tools for creating innovative optical systems with improved performance, new functionality, and drastically reduced size and weight.

It will do this by finding ways to manipulate light in ways beyond the conventions of classical reflection and refraction, delivering optical systems the size of a sugar cube.

If successful, EXTREME could introduce a new era in optics and imagers for national defense.

Read more

Washington, DC — The creation of a new material has long been either an accident or a matter of trial and error. Steel, for instance, was developed over hundreds of years by people who didn’t know why what they were doing worked (or didn’t work). Generations of blacksmiths observed that iron forged in charcoal was stronger than iron that wasn’t, and iron that was forged in a very high-temperature, charcoal-fired furnace and rapidly cooled was even stronger, and so on.

While we’re still learning things about steel, we now have all kinds of recipes that we can use to make steels with different properties depending on the application, but those recipes took a lot of time, sweat and toil to develop. Wouldn’t it be great if we could skip over all the trials and errors and design new materials from scratch with the exact properties we want?

Read more

3D Printing for the skull.

home

Ceramics are a particularly interesting material in 3D printing, I think. When one thinks of ceramics, one typically thinks of china, pottery, coffee mugs, etc. The material is used in a much wider range of applications than most people realize, though, and the Ceramaker 3D printer has been demonstrating the versatility of ceramics while satisfying customers across multiple industries.

Developed by French company 3DCeram, the Ceramaker first caught our attention when it was displayed at Euromold last year. The printer utilizes pastes made from photopolymers combined with alumina, zirconia or hydroxypatite (HA), and 3DCeram is consistently working on developing new materials – they also offer custom formulations tailored to the needs of customers. Even without extra customization, though, the Ceramaker’s materials almost tailor themselves to a variety of applications in a number of industries.

Continue reading “3DCeram 3D Prints Custom-Designed, Biocompatible Cranial Prostheses” | >

Researchers have developed a liquid material that repairs torn clothes, and it it able to withstand subsequent washes in a washing machine.

Every invention starts with an idea. And a group of researchers at Pennsylvania State University have a rather great idea—making a piece of torn fabric heal itself.

After years of working on the concept, the team is more than pleased to have created a biodegradable liquid material that allows torn fabric to bind to itself back together, sans needles.

Read more