Materials – Lifeboat News: The Blog

Dec 8
2015

Flexible Electronics Used to Make Smart, Temperature Responsive Drug Eluting Patch

At MIT, researchers have developed a stretchable bandage-like device capable of sensing skin temperature, delivering drugs transdermally, and containing electronics that include LED lights for displaying information. The various components of the system are designed to work together, for example the drug dispenser activating only when skin temperature is within a certain range and the LEDs lighting up when the drug reservoirs are running low. While this is only a prototype device, it certainly points toward future flexible devices that stay attached to a person’s skin, or even internally, for extended periods of time while providing health data and taking therapeutic actions in an intelligent way.

The device is based on a stretchable hydrogel matrix that reliably holds onto embedded metallic components linked by pliable wires. The hydrogel was made to have a stiffness similar to human soft tissues so that it blends well with the body when attached to it. When wires, drug reservoirs, delivery channels, and electronic components were built-in, the team tested the stretchiness of the final result showing that it maintains functionality even after repeated stress.

flexible-electronic-band-aid

Dec 8
2015

New US space mining law to spark interplanetary gold rush

Flashing some interplanetary gold bling and sipping “space water” might sound far-fetched, but both could soon be reality, thanks to a new US law that legalizes cosmic mining.

In a first, President Barack Obama signed legislation at the end of November that allows commercial extraction of minerals and other materials, including water, from asteroids and the moon.

That could kick off an extraterrestrial gold rush, backed by a private aeronautics industry that is growing quickly and cutting the price of commercial space flight.

Dec 4
2015

3D Printers Can Now Churn Out “Living” Blood Vessels

In a breakthrough that could lead to printable organs and an enhanced understanding of human physiology, researchers from Lawrence Livermore National Labs have 3D-printed functional blood vessels that look and function like the real thing.

3D bioprinters are similar to conventional 3D printers, but instead of using inert materials, they use “bio-ink:” basic structural building blocks that are compatible with the human body.

Dec 4
2015

Here’s a Peek at the First Sodium-ion Rechargeable Battery

Ubiquitous sodium could replace rare lithium in rechargeable batteries, French researchers show. And it could make batteries A LOT cheaper.

Will sodium replace lithium as the material of choice for rechargeable batteries?

Dec 4
2015

Stanford scientists made plastic skin that can actually feel

Dec 4
2015

An organic mixed ion-electron conductor for power electronics

Researchers at Linköping University’s Laboratory of Organic Electronics, Sweden, have developed power paper — a new material with an outstanding ability to store energy. The material consists of nanocellulose and a conductive polymer. The results have been published in Advanced Science.

One sheet, 15 centimetres in diameter and a few tenths of a millimetre thick can store as much as 1 F, which is similar to the supercapacitors currently on the market. The material can be recharged hundreds of times and each charge only takes a few seconds.

It’s a dream product in a world where the increased use of renewable energy requires new methods for energy storage — from summer to winter, from a windy day to a calm one, from a sunny day to one with heavy cloud cover.

Dec 3
2015

Discovery Provides Hope Of More Effective, Safer Cryopreservation

Cryogenics are an old science fiction dream, but today we still struggle to store large tissues without harming them. Now a breakthrough could lead to a safer, more reliable approach.

” This could be an important step toward the preservation of more complex tissues and structures”

Overcoming past challenges

Cryopreservation of biological material is commonplace, but there are remaining challenges. The initial problem with freezing any cell is crystallization, in which ice crystals form and rupture cells. This was overcome by using molecules like ethylene glycol, which essentially act like anti-freeze and prevent crystallization from happening. These are very effective, but they’re also often toxic; damaging or killing some cells in the process. This has made storage of larger tissues very challenging.

Dec 2
2015

Coming to a monitor near you: a defect-free, molecule-thick film

An emerging class of atomically thin materials known as monolayer semiconductors has generated a great deal of buzz in the world of materials science. Monolayers hold promise in the development of transparent LED displays, ultra-high efficiency solar cells, photo detectors and nanoscale transistors. Their downside? The films are notoriously riddled with defects, killing their performance.

Nov 30
2015

Researchers find new phase of carbon, make diamond at room temperature

Researchers from North Carolina State University have discovered a new phase of solid carbon, called Q-carbon, which is distinct from the known phases of graphite and diamond. They have also developed a technique for using Q-carbon to make diamond-related structures at room temperature and at ambient atmospheric pressure in air.

Phases are distinct forms of the same material. Graphite is one of the solid phases of carbon; diamond is another.

“We’ve now created a third solid phase of carbon,” says Jay Narayan, the John C. Fan Distinguished Chair Professor of Materials Science and Engineering at NC State and lead author of three papers describing the work. “The only place it may be found in the natural world would be possibly in the core of some planets.”

Nov 29
2015

Diamond nanothread rivals graphene as the next big wonder material

For some time now, graphene has been the wonder material that scientists have been most excited about using: as it develops, it promises to transform everything from night-vision goggles to energy storage. Now researchers across the globe think they’ve come up with a material to rival it: diamond nanothread.

The clues are in the name. This potentially revolutionary, next-generation material is partly made from diamond and is incredibly thin as well as incredibly strong. Technically speaking, we’re looking at a type of carbon (like graphene) taking the form of a one-dimensional diamond crystal that’s topped with hydrogen. To create the material, benzene molecules were stacked together and pressurised.

It’s too early to say how diamond nanothread could be used — right now scientists are still at the research and simulation stage — but one of the appeals of a material like this is its versatility. And a team of scientists working at the Queensland University of Technology (QUT) in Australia has been looking into the properties of diamond nanothread and think it might be more versatile and robust than originally believed.