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May 30, 2021

New state of matter unlocks a secret of perovskite solar cells

Posted by in categories: chemistry, solar power, sustainability

Perovskite solar cells are advancing at a rapid rate, and is drawing interest from scientists working to not just boost their performance but better understand how they offer such incredible, ever-increasing efficiencies. By turning their tools to perovskite crystals scientists have discovered unexpected behavior that represents an entirely new state of matter, which they say can help drive the development of advanced solar cells and other optical and electronic devices.

One of the reasons there is such interest around perovskite solar cells is the counter-intuitive way they are able to offer such excellent performance in spite of defects in their crystal structure. While much research focuses on fixing these defects to boost their efficiency, through chemical treatments, molecular glue or even sprinklings of chili compounds, the fact remains that the material is a far more effective semiconductor than it should be.

“Historically, people have been using bulk semiconductors that are perfect crystals,” says senior author Patanjali Kambhampati, an associate professor in the Department of Chemistry at McGill University. “And now, all of a sudden, this imperfect, soft crystal starts to work for semiconductor applications, from photovoltaics to LEDs. That’s the starting point for our research: how can something that’s defective work in a perfect way?”

May 30, 2021

The urban farmers hoping to save our cities | CNBC Reports

Posted by in categories: employment, materials

In the concrete jungle of Singapore, some people are ditching the comforts of the air-conditioned offices and opting to get their hands dirty instead. CNBC’s Nessa Anwar meets some of the trailblazers marrying traditional jobs with technology.

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May 30, 2021

Ep. 35: Mark Ryan on deep learning with tabular data

Posted by in categories: information science, robotics/AI, transportation

Deep-learning expert weighs in on getting to AGI, assessing algorithmic intelligence, autonomous vehicles,” “Mark Ryan is a Data Science Manager at Intact Insurance and the author of the recently-released “Deep Learning with Structured Data”. He holds a Masters degree in Computer Science from the University of Toronto, and is interested in chatbots and natural language processing.

May 30, 2021

Kellogg’s robot vending machine lets you mix your favorite cereals

Posted by in category: robotics/AI

This is what dreams are made of.

May 30, 2021

AI Weekly: GoodAI aims to fund research on fundamental AI challenge

Posted by in category: robotics/AI

Marek Rosa, a Slovakian entrepreneur and computer programmer, founded GoodAI, a company dedicated to the research and development of general artificial intelligence (AGI). In 2017, he founded the General AI Challenge, pledging $5 million in prize money to tackle critical research problems in “human-level” AI development.

GoodAI, an organization founded by Slovakian entrepreneur Marek Rosa, aims to solve fundamental challenges in AI.

May 30, 2021

4 Things GPT-4 Will Improve From GPT-3

Posted by in category: futurism

Prediction: GPT-4 will be bigger, more skilled, more robust and will have more memory than GPT-3.

May 30, 2021

Israel’s operation against Hamas was the world’s first AI war

Posted by in categories: military, robotics/AI, supercomputing, terrorism

The Israeli military is calling Operation Guardian of the Walls the first artificial-intelligence war. the IDF established an advanced AI technological platform that centralized all data on terrorist groups in the Gaza Strip onto one system that enabled the analysis and extraction of the intelligence.

The IDF used artificial intelligence and supercomputing during the last conflict with Hamas in the Gaza Strip.

May 30, 2021

The Passage of Time and the Meaning of Life | Sean Carroll

Posted by in categories: alien life, evolution, particle physics, quantum physics

What is time? What is humankind’s role in the universe? What is the meaning of life? For much of human history, these questions have been the province of religion and philosophy. What answers can science provide?

In this talk, Sean Carroll will share what physicists know, and don’t yet know, about the nature of time. He’ll argue that while the universe might not have purpose, we can create meaning and purpose through how we approach reality, and how we live our lives.

Continue reading “The Passage of Time and the Meaning of Life | Sean Carroll” »

May 30, 2021

Trials begin on lozenge that rebuilds tooth enamel

Posted by in categories: biotech/medical, genetics

Before too long, you may be able to buy a breath mint that rebuilds your tooth enamel while it whitens your teeth, thanks to a team of University of Washington researchers.

The team is preparing to launch clinical trials of a lozenge that contains a genetically engineered peptide, or chain of amino acids, along with phosphorus and calcium ions, which are building blocks of tooth enamel. The peptide is derived from amelogenin, the key protein in the formation of tooth enamel, the tooth’s crown. It is also key to the formation of cementum, which makes up the surface of the tooth root.

Each lozenge deposits several micrometers of new enamel on the teeth via the peptide, which is engineered to bind to the damaged enamel to repair it while not affecting the mouth’s soft tissue. The new layer also integrates with dentin, the living tissue underneath the tooth’s surface. Two lozenges a day can rebuild enamel, while one a day can maintain a healthy layer. The lozenge – which can be used like a mint – is expected to be safe for use by adults and children alike.

May 30, 2021

Viruses genetically engineered to kill bacteria rescue girl with antibiotic-resistant infection

Posted by in categories: bioengineering, biotech/medical, genetics

Students helped find the viruses, called phages, that treated lung transplant patient, but strategy may be hard to repeat for other infections.