Archive for the ‘electronics’ category: Page 31

May 1, 2021

Pissing Match: Is the World Ready for the Waterless Urinal?

Posted by in categories: business, electronics

Circa 2010

In a laboratory 10 miles east of downtown Los Angeles, a mechanical penis sputters to life. A technician starts a timer as a stream of water erupts from the apparatus’s brass tip, arcing into a urinal mounted exactly 12 inches away. James Krug smiles. His latest back-splatter experiment is under way.

Krug is an unusual entrepreneur. Twenty years ago, he was a rising star in the film and television business. He served as a vice president of the Disney Channel in the 1980s and ran a distribution company with members of the Disney family in the ’90s. But 11 years ago, Krug became convinced that the world did not need another TV show. What it needed was a better urinal.

Apr 15, 2021

Researchers identify a strategy to achieve large transport gap modulation in graphene

Posted by in categories: electronics, materials

Over the past decade or so, the semimetal graphene has attracted substantial interest among electronics engineers due to its many advantageous qualities and characteristics. In fact, its high electron mobility, flexibility and stability make it particularly desirable for the development of next-generation electronics.

Despite its advantageous properties, large-area has a zero bandgap (i.e., the energy range in solid materials at which no electronic states can exist). This means that in graphene cannot be completely shut off. This characteristic makes it unsuitable for the development of many electronic devices.

Researchers at Tsinghua University in China recently devised a design strategy that could be used to attain a larger bandgap in graphene. This strategy, introduced in a paper published in Nature Electronics, entails the use of an electric field to control conductor-to-insulator transitions in microscale graphene.

Apr 9, 2021

Striatal dopamine mediates hallucination-like perception in mice

Posted by in categories: electronics, neuroscience

There has not been enough progress in our understanding of the basic mechanisms underlying psychosis. Studying psychotic disorders in animal models is difficult because the diagnosis relies on self-reported symptoms that can only be assessed in humans. Schmack et al. developed a paradigm to probe and rigorously measure experimentally controlled hallucinations in rodents (see the Perspective by Matamales). Using dopamine-sensor measurements and circuit and pharmacological manipulations, they demonstrated a brain circuit link between excessive dopamine and hallucination-like experience. This could potentially be useful as a translational model of common psychotic symptoms described in various psychiatric disorders. It may also help in the development of new therapeutic approaches based on anatomically selective modulation of dopamine function.

Science, this issue p. see also p. [33][2]


Apr 1, 2021

How Metaphors Shape Our Ideas About Education

Posted by in categories: education, electronics

An interview with Dr. Yulia Turchaninova on What would be your take on that?

Many parents employ a “job” metaphor for school. But as a parent, do you bring your work home every night? Do it over the weekend? Take it with you on vacation? And if you do, are you still eager to work on it when the whole family sits down to chat, play and watch TV after dinner? And how many direct bosses do you have above you? How about six to eight different ones a day, each with their own quirks? Do they replace each other at the ring of the bell, demanding that you instantly and completely switch to the new assignment, regardless of whether you have completed the previous one, and do it in their idiosyncratic way? And if you do, is this the kind of life that you would wish for your children?

Brodsky: So, what would be a better way of treating our metaphors?

Continue reading “How Metaphors Shape Our Ideas About Education” »

Mar 29, 2021

Energy-harvesting card treats 5G networks as wireless power grids

Posted by in categories: electronics, mobile phones

A team from Georgia Tech has just announced a world-first: a 3D-printed rectifying antenna the size of a playing card that can harvest electromagnetic energy from 5G signals and use it to power devices, turning 5G networks into wireless power grids.

Wireless communications put a lot of energy into the air, and over the years we’ve covered a number of efforts to harvest that energy. Short-range Wi-Fi signals have been the target of several projects, TV broadcasts and radio signals have been the focus of others. One device even hopes to increase the life of a smartphone’s battery by 30 percent just by harvesting some of the radio waves the phone itself is generating.

Continue reading “Energy-harvesting card treats 5G networks as wireless power grids” »

Mar 27, 2021

These Are the Riskiest ‘Smart City’ Technologies, Cybersecurity Experts Say

Posted by in categories: cybercrime/malcode, electronics

Technology like sensors built into infrastructure and emergency alerts has possible benefits, but in a new study dozens of experts weigh in on where some of the more significant pitfalls may lie.

Mar 22, 2021

Breakthrough in electronic display fabrics could help pave the way for smart clothing

Posted by in categories: electronics, innovation

The fabric is about as bright as the average flat-screen TV. The researchers noted their prototype was also significantly more durable than conventional thin-film flexible displays, making it more suitable for practical use. The performance for most of the display remained stable after 1000 cycles of bending, stretching and pressing, and 100 cycles of washing and drying.

Mar 19, 2021

Why Does SpaceX’s Camera Cut Out During Landings?

Posted by in categories: electronics, space travel

We all love watching SpaceX landing the Falcon 9, so why is it so difficult to get footage of it?

Mar 12, 2021

‘Camera-in-a-pill’ helps to spot cancer

Posted by in categories: biotech/medical, electronics

The NHS in England has begun trials of a new miniature camera device that a patient can swallow, to check if they have bowel cancer, as an alternative to traditional colonoscopy.

Mar 7, 2021

Cameras on 32 Interplanetary Spacecraft

Posted by in categories: electronics, space travel

Read about the cameras on 32 interstellar spacecraft that have been launched from earth in recent decades.

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