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Friday, May 12 2017

A Golden Cure: Market for Gold Nanoparticles Expected to Hit $8 Billion in Next Five Years

According to the market research firm Global Market Insights, the market size for gold nanoparticles is projected to reach $8 billion by 2022. As Forbes recently reported, gold’s increasing use in the healthcare industry will drive that growth. Gold nanoparticals are used in a wide range of medical applications, including imaging, diagnosis, drug delivery, photo-thermal therapy, and even as a coating for titanium-based dental implants.

In the most recent development, researchers have discovered gold nanoparticles can serve as a vehicle to deliver cancer medication directly into cancer cells. The drug shuts down a molecule called telomerase. This process keeps malignant cells from rejuvenating and growing out of control.

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Wednesday, April 26 2017

The formation of gold deposits in South Africa

The Witwatersrand basin in South Africa hosts the largest known gold repository on Earth -- but how was it formed? Scientists were able to figure out how parts of the Earth's largest gold deposits formed about three billion years ago. Crude oil and hot hydrothermal fluids played a major role.

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Friday, April 21 2017

Graphene and gold make a better brain probe

The electrode starts with a thin gold base. Attached to the base are tiny zinc oxide nanowires, which are coated in a thin layer of gold, and then a layer of conducting polymer called PEDOT. These combined materials increase the probe's effective surface area, conducting properties, and strength of the electrode, while still maintaining flexibility and compatibility with soft tissue.

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Fusion efficiency boosted by exploding a tiny gold shell from the inside

The key to inertial confinement fusion is that the laser crushes a pellet of nuclear fuel, increasing the pressure and temperature to the point where fusion can occur. This works if you can get a set of laser beams that illuminate the pellet from all sides at once, delivering an even and clean crushing force.

But, what would happen if, instead of applying the force from the outside, the force was applied from the inside and directed outward?

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Friday, April 7 2017

Gold-plated crystals set new standard for natural gas detectors

Materials scientists and engineers have developed a sensor that is fast, sensitive and efficient enough to detect specific wavelengths of electromagnetic energy while on the move. The technology could actively scan areas for methane or natural gas leaks, monitor the health of vast fields of crops or quickly sort plastics for recycling.

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Saturday, April 1 2017

Painting fingernails with silver and gold

Since ancient times, people have used lustrous silver, platinum and gold to make jewelry and other adornments. Researchers have now developed a new way to add the metals to nail polish with minimal additives, resulting in durable, tinted and potentially antibacterial nail coloring.

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Super Strong Stretchy Silver

But Sansoz and a team of other scientists have made a discovery that may change that. Working with silver at a vanishingly small scale—nanowires just a few hundred atoms thick—they discovered that they could make wires that were both super strong “and stretchy like gum,” he says.

This kind of silver wire could be fashioned into a mesh that conducts current, allows light to shine through—and bends so easily “you might be able to tie your smartphone into a knot,” he says.

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