Lifeboat Foundation

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 graphene has a zero bandgap (i.e., the energy range in solid materials at which no electronic states can exist). This means that electric current 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.

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]

### INTRODUCTION

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” »

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” »

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.

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.

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

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.

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