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Dec 3, 2022

Researchers realize perovskite-based phase heterojunction solar cells

Posted by in categories: solar power, sustainability

Over the past few decades, engineers and material scientists have created increasingly advanced and efficient solar technologies. Some of these technologies are based on photovoltaics with a so-called heterojunction structure, which entails the integration of two materials with distinct optoelectronic properties.

Researchers at Technische Universität Dresden have recently realized a different type of , referred to as phase heterojunction (PHJ) solar cells. These cells, introduced in a paper published in Nature Energy, were fabricated using two polymorphs (i.e., structural forms) of the same material, the perovskite CsPbI3, instead of two entirely different semiconductors.

“The realization of a PHJ requires the ability to fabricate two different phases of the same perovskite composition on top of each other,” Yana Vaynzof, lead author of the paper, told TechXplore. “While the fabrication of CsPbI3 perovskite by solution-processing is well established in the literature, we needed to develop a method to deposit a perovskite without dissolving the underlying layer, so we decided to use thermal evaporation for this purpose.”

Dec 3, 2022

Brain mapping in mice may explain why pain makes us lose our appetite

Posted by in categories: chemistry, food, mapping, neuroscience

Examinations using microscopes confirmed that these neurons were active in the mice with chronic pain. When the researchers used chemicals to stop the neuronal activity in this cortex, the mice’s appetites improved.

Similarly, when the researchers used chemicals to activate these neurons in mice that weren’t in pain, the animals ate less, even if they had been deprived of food before the experiment.

This is the first time that researchers have traced the brain mechanisms behind pain-related appetite loss, the researchers wrote.

Dec 3, 2022

Scientists Just Caught Bacteria Using a Never-Before-Seen Trick to Avoid Antibiotics

Posted by in categories: biotech/medical, health

Researchers have just caught bacteria sidestepping antibiotic treatment with a never-before-seen trick.

Bacteria’s troublesome talent for developing resistance against antibiotics is a rapidly growing health threat. This ability has ancient origins and allows drug-resistant bacterial infections like MRSA and gonorrhea to kill 1.3 million people globally each year.

Continue reading “Scientists Just Caught Bacteria Using a Never-Before-Seen Trick to Avoid Antibiotics” »

Dec 3, 2022

Has Sweden Invented Green Steel?

Posted by in category: media & arts

This new type of steel is a big deal.
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Continue reading “Has Sweden Invented Green Steel?” »

Dec 3, 2022

In Space/China-In-orbit Rotation/Return

Posted by in category: space

Dongfeng Landing Site, Inner Mongolia, north China — Recent (CCTV — No access Chinese mainland) 10. Various of workers in preparation for Shenzhou-14 crew’s return 11. Fast motion of ground radar equipment; vehicles.

In Space — Recent (China Manned Space Agency — No access Chinese mainland) 12. Space station view taken by Tianhe panoramic camera c 13. Fast motion of space station.

The Shenzhou-14 crew, after staying at China’s space station for half a year and performing rotation with their Shenzhou-15 colleagues, is scheduled to return to Earth on Sunday.

Dec 3, 2022

Cathie Wood — Investing in disruptive innovation | SingularityU ExFin South Africa Summit

Posted by in categories: innovation, singularity

We learnt from investment expert Catherine Wood, Founder and CEO at ARK Invest, as she discussed Investing in disruptive innovation at the Exponential Financ…

Dec 3, 2022

Mapping the hidden connections between diseases

Posted by in categories: biotech/medical, education, health

A new study led by UCL researchers has identified patterns in how common health conditions occur together in the same individuals, using data from 4 million patients in England.

With advancing age, millions of people live with multiple conditions—sometimes referred to as multimorbidity—and the proportion of people affected in this way is expected to rise over the next decades. However, and training, , clinical guidelines and research have evolved to focus on one disease at a time.

The Academy of Medical Sciences and the UK Chief Medical Officer (CMO) have recognized this problem and set out a challenge of investigating which diseases co-occur in the same individuals and why.

Dec 3, 2022

Germ-Killing Spray Protects Surfaces for Months

Posted by in category: biotech/medical

It’s hard to keep surfaces clean in public spaces, but what if they could be protected with a spray that eliminates illness-causing microorganisms? Now, a new antimicrobial option is in the works.

Dec 3, 2022

Interesting to me how many of the ChatGPT takes are either “this is AGI” (obviously not close, lol) or “this approach can’t really go that much further

Posted by in category: robotics/AI

Trust the exponential. flat looking backwards, vertical looking forwards.

Dec 3, 2022

Updated version of my GPT3 powered iOS shortcut

Posted by in category: futurism

Now you can also follow up questions. Cc @bentossell