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Blog – Page 1391

NYU Abu Dhabi researchers have unveiled a novel 2D material improving optical modulation for advanced systems and communications.

Responding to the increasing demand for efficient, tunable optical materials capable of precise light modulation to create greater bandwidth in communication networks and advanced optical systems, a team of researchers at NYU Abu Dhabi’s Photonics Research Lab (PRL) has developed a novel, two-dimensional (2D) material capable of manipulating light with exceptional precision and minimal loss.

Tunable optical materials (TOMs) are revolutionizing modern optoelectronics, electronic devices that detect, generate, and control light. In integrated photonics circuits, precise control over the optical properties of materials is crucial for unlocking groundbreaking and diverse applications in light manipulation. Two-dimensional materials like Transition Metal Dichalcogenides (TMDs) and graphene exhibit remarkable optical responses to external stimuli. However, achieving distinctive modulation across a short-wave infrared (SWIR) region while maintaining precise phase control at low signal loss within a compact footprint has been a persistent challenge.

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If you’re still rinsing your teeth with water after brushing them, it may be time to stop. There are actually some benefits to leaving that extra bit of toothpaste on your teeth. I used to rinse after brushing my teeth — and even went back over them with a wet toothbrush — to remove any remnants of toothpaste left in my mouth. But then I found out from a dentist’s TikTok video that doing that isn’t the most effective method of keeping your chompers in good shape.

Instead, I now spit out as much toothpaste as I can without swishing with water, so I can allow the toothpaste to do its job just a little longer. However, I wasn’t sure why I was doing this — or what the benefits were — until I spoke with an expert.

I talked to Dr. Edmond Hewlett, consumer advisor for the American Dental Association and a professor at UCLA School of Dentistry, to find out why you shouldn’t rinse your mouth with water after brushing your teeth. Here’s the answer. For more tips, here’s why you should floss before brushing your teeth.

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Tesla has released a new video of a prototype of Optimus, its humanoid robot, and it created some controversy as some disagree about how impressive it is.

Last month, Elon Musk gave an update on the timing for the rollout of Optimus. The CEO says that Optimus is already performing factory tasks inside its lab. He believes that Optimus will be used to perform real tasks inside actual Tesla factories by the end of the year.

Furthermore, Musk said that he believes Tesla could start selling its Optimus humanoid robot to customers outside of the company by the end of 2025.

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Chemistry, with its intricate processes and vast potential for innovation, has always been a challenge for automation. Traditional computational tools, despite their advanced capabilities, often remain underutilized due to their complexity and the specialized knowledge required to operate them.

Now, researchers with the group of Philippe Schwaller at EPFL have developed ChemCrow, an AI that integrates 18 expertly designed tools, enabling it to navigate and perform tasks within chemical research with unprecedented efficiency. Their research is published in Nature Machine Intelligence.

“You might wonder why a crow?” asks Schwaller. “Because crows are known to use tools well.”

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A research team led by Dr. Serge Krasnokutski from the Astrophysics Laboratory at the Max Planck Institute for Astronomy at the University of Jena had already demonstrated that simple peptides can form on cosmic dust particles. However, it was previously assumed that this would not be possible if molecular ice, which covers the dust particle, contains water—which is usually the case.

Now the team, in collaboration with the University of Poitiers, France, has discovered that the presence of water molecules is not a major obstacle for the formation of peptides on such dust particles. The researchers report on their finding in the journal Science Advances.

Chemistry in the icy vacuum “We have replicated conditions similar to those in outer space in a vacuum chamber, also adding substances that occur in so-called molecular clouds,” explains Krasnokutski. These substances include ammonia, atomic carbon, and carbon monoxide. “Thus, all the chemical elements needed for simple peptides are present,” adds the physicist.

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