Menu

Blog

Archive for the ‘materials’ category: Page 275

Aug 25, 2016

Building devices from colloidal quantum dots

Posted by in categories: materials, quantum physics

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]

Continue reading “Building devices from colloidal quantum dots” »

Aug 22, 2016

New Lighter, Tougher, and Bendable Concrete Aims to Revolutionize Roads

Posted by in categories: materials, sustainability

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.

Continue reading “New Lighter, Tougher, and Bendable Concrete Aims to Revolutionize Roads” »

Aug 17, 2016

DARPA’s EXTREME Program will Manipulate Light to Strengthen US National Security

Posted by in categories: materials, security

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.

Continue reading “DARPA’s EXTREME Program will Manipulate Light to Strengthen US National Security” »

Aug 17, 2016

Revolution by Design: The Materials Genome Initiative

Posted by in categories: biotech/medical, materials

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

Aug 16, 2016

3DCeram 3D Prints Custom-Designed, Biocompatible Cranial Prostheses

Posted by in categories: 3D printing, materials

3D Printing for the skull.


home

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

Aug 15, 2016

Self-Healing Textile: Welcome to the Age of Clothes That Can Heal Themselves

Posted by in categories: innovation, materials

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.

Continue reading “Self-Healing Textile: Welcome to the Age of Clothes That Can Heal Themselves” »

Aug 13, 2016

Scientists are closing in on turning hydrogen into a metal

Posted by in category: materials

Metallic hydrogen could be the room temperature superconductor we’ve been waiting for.

Read more

Aug 13, 2016

Self-healing textiles not only repair themselves, but can neutralize chemicals

Posted by in categories: biological, materials

UNIVERSITY PARK, Pa. — Someday, chemically protective suits made of fabric coated in self-healing, thin films may prevent farmers from exposure to organophosphate pesticides, soldiers from chemical or biological attacks in the field and factory workers from accidental releases of toxic materials, according to a team of researchers.

“Fashion designers use natural fibers made of proteins like wool or silk that are expensive and they are not self-healing,” said Melik C. Demire l, professor of engineering science and mechanics. “We were looking for a way to make fabrics self-healing using conventional textiles. So we came up with this coating technology.”

Continue reading “Self-healing textiles not only repair themselves, but can neutralize chemicals” »

Aug 11, 2016

Forget concrete and cement. DARPA thinks skin and bone make better building blocks

Posted by in categories: futurism, materials

Have you ever seen the movie called “The Haunting” with Liam Neeson and Catherine Zeta-Jones? If you have; you will appreciate this article. A living building.


The US’s Defense Advanced Research Projects Agency (DARPA) is attempting to build living, self-healing, programmable buildings.

DARPA’s Engineered Living Materials (ELM) program imagines that materials like bone, skin, bark and coral could form future building blocks as they provide advantages over non-living materials built with today, in that they can be grown where needed, self-repair when damaged and respond to changes in their surroundings.

Continue reading “Forget concrete and cement. DARPA thinks skin and bone make better building blocks” »

Aug 10, 2016

Photon Upconversion at Crystalline Organic–Organic Heterojunctions

Posted by in category: materials

How to turn green light blue.


Previous article in Early View: High-Performance Photovoltaic Polymers Employing Symmetry-Breaking Building Blocks.

Read more