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Category: materials – Page 332

Engineers Australia : New lab-made diamond at mining’s cutting-edge

Australia getting their QC production lines ready with this advancement. BTW — get ready as the printers are coming soon.

The Australian National University (ANU) has led an international team to create a nano-sized diamond that’s harder than the natural gem and which will be useful for cutting through super-hard mining materials.

ANU Associate Professor Jodie Bradby said her team, including ANU PhD student Thomas Shiell and experts from RMIT, the University of Sydney and the United States, fabricated nano-sized Lonsdaleite, which is a hexagonal diamond only found in nature at meteorite impact sites, such as in Arizona’s Canyon Diablo.

‘This new diamond is not going to be on any engagement rings. You’ll more likely find it on a mining site, but I still think that diamonds are a scientist’s best friend,’ said Assoc Prof Bradby from the ANU Research School of Physics and Engineering.

MIT create adaptive 3D printing process using light

Researchers at MIT have developed a method of altering 3D printed objects once printed. The technique involves using light in order to adapt the chemical structure of a 3D printed material. This allows the creation of more complex objects which could be molded together, softened, or even enlarged.

The university is a hub of 3D printing research. Recently announcement include their Computer Science and Artificial Intelligence Lab creating the ‘photoshop for 3D printing’. The ‘Foundry’ software was developed in order to make use of 3D printing’s advanced capabilities over conventional manufacturing techniques. Also addressing 3D printing technology, MIT researchers looked at using 3D printing to investigate how graphene might create the strongest material ever.

The newly published paper is called ‘Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis’ and available in the ACS Central Science Journal.

Nanowire ‘inks’ enable low-cost paper- or plastic-based printable electronics

Duke University chemists have found that silver nanowire films like these conduct electricity well enough to form functioning circuits without applying high temperatures, enabling printable electronics on materials like paper or plastic. (credit: Ian Stewart and Benjamin Wiley)

By suspending tiny metal nanoparticles in liquids, Duke University scientists can use conductive ink-jet-printed conductive “inks” to print inexpensive, customizable RFID and other electronic circuit patterns on just about any surface — even on paper and plastics.

Printed electronics, which are already being used widely in devices such as the anti-theft radio frequency identification (RFID) tags you might find on the back of new DVDs, currently have one major drawback: for the circuits to work, they first have to be heated to 200° C (392°F) to melt all the nanoparticles together into a single conductive wire.

Scientists Have Found a Drug That Regenerates Teeth, and It Could Reduce the Need for Fillings

Researchers have identified a drug that can regenerate teeth from the inside out, possibly reducing the need for artificial fillings.

The drug was previously used in Alzheimer’s clinical trials, and it now appears to improve the tooth’s natural ability to heal itself. It works by activating stem cells inside the tooth’s pulp centre, prompting the damaged area to regenerate the hard dentin material that makes up the majority of a tooth.

“The simplicity of our approach makes it ideal as a clinical dental product for the natural treatment of large cavities, by providing both pulp protection and restoring dentine,” said lead author Paul Sharpe from King’s College London.

The Biocrystal- Holographic Properties Of DNA

Interesting position.

Anonymous by request.

“The human energy field exists as an array of oscillating energy points that have a layered structure and a definite symmetry and these properties fulfill the definition of a normal crystal in material form” – Marc Vogel.

The human body is a universe onto itself; a vast, intricate system of incredible sensitivity and detail. It has been the subject of wonder, philosophy and scientific study for centuries, yet its most elemental design is still shrouded in mystery. What is the relation of biological life to the Cosmos – to the fabric of space and time itself? Is our body the “earthen machine” of Descartes; an “automaton” of discrete mechanical function? Are we really locked in an endless struggle against the ticking clock of thermodynamic entropy – of increasing disorder – as is the view of contemporary physics? The fractal-holographic model sheds new light on these questions; a unified description of the Cosmos reveals its true relation to Man, a relationship so entangled, so intimate that the two cannot be viewed apart…

Researchers Develop New Porous Graphene Material

Stronger Graphene; can you imagine have a car or SUV that is solid like a Sherman Tank and weighs the same or less than your car or SUV does today; or a commercial jet that it’s fuselage remains intact when it crashes while protecting others inside; or a building that does not get ripped apart in a tornado? With this form of graphene it may be possible.

Now a team of researchers at MIT have developed a computer model that simulates fusing flakes of graphene into three-dimensional configurations.

According to the researchers, Graphene is a strong material. As such, the porous graphene material can be used in the construction industry by creating strong and light materials.

This also suggests that other strong and lightweight materials can be made stronger as well by taking on similar geometric features. They were mechanically tested for their tensile and compressive properties, and their mechanical response under loading was simulated using the team’s theoretical models.

Biotech Breakthrough: Engineers Made a New Material That Can Be Programmed

In Brief

  • Researchers have created a 3D bulk material from silk fibroin that can be programmed to activate specific tasks when exposed to conditions like temperature or infrared light.
  • The material could be used to create everything from hormone-emitting orthopedics to surgical pins that change color when they near their mechanical limits.

Engineers from Tufts University have just created a new, versatile material that could be optimized for a number of purposes, particularly within the medical field. The material was constructed out of special proteins called silk fibroins, and it can be programmed for specific biological, chemical, or mechanical tasks. The study was published online in Proceedings of the National Academy of Sciences (PNAS).

The team used water-based fabrication methods inspired by protein self-assembly to produce 3D bulk materials from silk fibroin. Fibroin, the structural protein that gives silk its durability, was chosen because it allowed for the easiest manipulation of the resulting substance’s form, as well as smoother modification of function. It’s also completely biodegradable.

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