Lifeboat Foundation

Terahertz radiation, or T-rays, can do some really incredible stuff. It can be used to scan for tumors and bombs build ultrafast wireless networks and see through solid objects. As an imaging technology, however, T-ray cameras have always had a resolution limitation. Well, they used to. Researchers at the University of Exter has developed a new terahertz camera that can see at a microscopic level — and they want to use it to find defects in microchips.

This breakthrough kind of changes the game for terahertz imaging. The radiation has always been able to look through solid objects without damaging them — which is why it’s frequently used in the art world to look past the surface layer of various masterpieces — but resolution limitations kept it from being used to diagnose broken computer chips.

Project lead Rayko Stantchev says his team has effectively doubled the technology’s resolution, creating a proof-of-principle prototype that can see a microscopic image printed on a circuit board obscured by a thick silicon wafer. “With our device you could test the quality of microchips that have buried under optically-opaque materials,” Stantchev says. “Allowing you to tell if a hidden chip is broken without having to open it up.”

Continue reading “Researchers use T-rays to look inside of broken microchips” »

Nice!

Metal organic vapor phase deposition on etched 4-inch-diameter sapphire wafers is used to create low-defect-density gallium nitride templates.

Continue reading “Scalable semipolar gallium nitride templates for high-speed LEDs” »

Patents filed on many pre-existing 3D printing processes are about to expire. As this occurs, it will bring on a new era in 3D printing. Machinery and material costs will plummet, and the quality of prints will increase.

An important shift is occurring in the 3D printing world: patents are expiring. Patents filed on pre-existing industrial printing processes, especially those filed at the turn of the century, have already expired or are set to expire in the coming years.

Take, for example, the case of Fused Deposition Modeling (FDM). The patent on FDM expired in 2009. As a result, prices for FDM printers dropped from over $10,000 to less than $1,000, which caused consumer-friendly 3D printer manufacturers– like MakerBot and Ultimaker– to pop up.

Scientists in California are testing a spongy material made with the key ingredient of baking soda as means of capturing carbon emissions.

Researchers at MIT are seeking to redesign concrete — the most widely used human-made material in the world — by following nature’s blueprints.

In a paper published online in the journal Construction and Building Materials, the team contrasts cement paste — concrete’s binding ingredient — with the structure and properties of natural materials such as bones, shells, and deep-sea sponges. As the researchers observed, these biological materials are exceptionally strong and durable, thanks in part to their precise assembly of structures at multiple length scales, from the molecular to the macro, or visible, level.

From their observations, the team, led by Oral Buyukozturk, a professor in MIT’s Department of Civil and Environmental Engineering (CEE), proposed a new bioinspired, “bottom-up” approach for designing cement paste.

Continue reading “Finding a New Formula for Concrete” »

https://www.facebook.com//videos/496701823842355/

Say ‘Goodbye’ to Cracks, Self-Healing Concrete Has Arrived.

A new cheaper way in creating magnets.

US researchers have created a powerful permanent magnet out of iron and nitrogen, two plentiful cheap materials, as part of a programme to cut the need for ‘rare earth’ metals.

It is only a tiny sample, a film 500nm thick, but it is the real thing.

Continue reading “Rare-earth-free magnet made from cheap materials” »

New graphene transistor makes for a faster processor.

Scientists have developed a new type of graphene-based transistor and using modelling they have demonstrated that it has ultralow power consumption compared with other similar transistor devices. The findings have been published in a paper in the journal Scientific Reports. The most important effect of reducing power consumption is that it enables the clock speed of processors to be increased. According to calculations, the increase could be as high as two orders of magnitude.

“The point is not so much about saving electricity — we have plenty of electrical energy. At a lower power, electronic components heat up less, and that means that they are able to operate at a higher clock speed — not one gigahertz, but ten for example, or even one hundred,” says the corresponding author of the study, the head of MIPT’s Laboratory of Optoelectronics and Two-Dimensional Materials, Dmitry Svintsov.

“We have developed a hydrogel based rapid E. coli detection system that will turn red when E. coli is present,” says Professor Sushanta Mitra, Lassonde School of Engineering. “It will detect the bacteria right at the water source before people start drinking contaminated water.”

The new technology has cut down the time taken to detect E. coli from a few days to just a couple of hours. It is also an inexpensive way to test drinking water (C$3 per test estimated), which is a boon for many developing countries, as much as it is for remote areas of Canada’s North.

“This is a significant improvement over the earlier version of the device, the Mobile Water Kit, that required more steps, handling of liquid chemicals and so on,” says Mitra, Associate Vice-President of Research at York U. “The entire system is developed using a readily available plunger-tube assembly. It’s so user-friendly that even an untrained person can do the test using this kit.”