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Metal organic vapor phase deposition on etched 4-inch-diameter sapphire wafers is used to create low-defect-density gallium nitride templates.
Continue reading “Scalable semipolar gallium nitride templates for high-speed LEDs” »
Riding the coattails of cold atomic physics, researchers have demonstrated the ability to steer cold molecules into desired quantum states.
Ultracold atoms have become a favorite tool in physics because they can be precisely placed in a quantum state using optical and magnetic fields. This quantum control has been crucial for understanding fundamental quantum-mechanical behavior and for creating metrological devices such as the atomic clocks that keep time for GPS systems. Current efforts are devoted to using these controllable systems to simulate, for example, superconductivity, but this and other future applications will likely require that the particles within the system interact with each other. Ultracold atoms do not interact very strongly, so an obvious alternative is to turn to molecules. As opposed to atoms, molecules can have an electric dipole, which lets them naturally interact strongly with each other through dipole forces. But molecules are not a straight substitute for atoms. They are much more complicated and thus significantly harder to cool and control than atoms.
A beautiful thought — can you imagine your auto protecting you from criminals?
CAMBRIDGE, Mass. — While much of the media attention around autonomous vehicle technology has been focused on fully self-driving cars, consumers shouldn’t expect cars that act like chauffeurs any time soon.
The vast majority of mainstream vehicles adopting autonomous driving features will be controlled by advanced driver assistance systems (ADAS) or “guardian angels” that learn over time, Gil Pratt, CEO Toyota Research Institute, told reporters and analysts last week.
Continue reading “A.I. guardian-angel vehicles will dominate auto industry, says Toyota exec” »
“HoloLens … is not just a headset. It’s also an API – called Windows Holographic — built by Microsoft to let developers code programs from the HoloLens itself. The company’s announcement that it’s opening Windows Holographic to partners means that they, too, will be able to build devices for its API platform. Anything that’s developed using that API should work as well on partner devices as on the HoloLens itself.”
Following a controversial top-secret meeting last month, a group of scientists have announced that they’re working on synthesizing human genes from scratch. The project, currently titled HGP-Write, has the stated aim of reducing the cost of gene synthesis to “address a number of human health challenges.” As the group explains, that includes growing replacement organs, engineering cancer resistance and building new vaccinations using human cells. But in order for all of that to happen, the scientists may have to also work on developing a blueprint for what a perfect human would look like.
In some ways, the concept is just an extension of current gene editing (CRISPR) techniques that are proving their worth by saving lives. CRISPR has already been used to save the life of a one-year-old girl with a terminal case of drug-resistant leukemia. Other initiatives using the system involve curing hemophilia and HIV, although the latter has proven capable of fighting back against attempts to kill it. This new project, meanwhile, will devote time and resources to examining the ethics and economics of how far we should go with gene editing.
HGP-Write is being led by DNA pioneer George Church, a Harvard biologist who is already working on various projects to tweak humanity. In a profile, Stat revealed that the scientist published a paper in 2014 pushing “de novo synthesis,” the concept of creating perfect genes from scratch. In early 2015, he used CRISPR to implant wooly mammoth DNA into a living Asian elephant as the first step toward bringing extinct animals back from the dead. Which, when you write it down like that, makes him sound like a less plausible version of John Hammond, the fictional creator of Jurassic Park.
Continue reading “Scientists want to perfect humanity with synthetic DNA” »
When you think about the headliners at a music festival, it’s unlikely that the first person to pop into your head would be Martine Rothblatt—the founder of Sirius XM, the one-time highest-paid female CEO in the world who made a robot clone of her wife, and the founder of the Terasem religion, which believes we’ll live forever by uploading our consciousness to the cloud. But Moogfest, a four-day citywide festival of music and technology in Durham, North Carolina, was not the average music festival. Unlike other festivals that make cursory overtures to technology, Moogfest dedicated as much time to explaining how technology influences creativity as to the creative output itself, even listing headline ‘technologists’ alongside its top-billed musical acts.
On the festival’s second day, Friday 20 May, Rothblatt took the stage to talk to a packed house at Durham’s Carolina Theater, in an atmosphere that felt far more like a TED talk than a music fest. Rothblatt, who is transgender, discussed the contentious North Carolina HB2 law, which bans transgender people from using public bathrooms of the gender they identify with; the idea that creativity would be better encouraged by free college tuition; and how she got to a point where she and her company, United Therapeutics, can actually think about 3D printing new body parts, and leaving our bodies behind—if we want. “You want to win more than you want to live,” she told the rapt crowd. “You yell ‘Geronimo’ as you jump crazily into monopolistic opposition.”
Quartz sat down with Rothblatt after her talk to chat more about her thoughts on AI, living forever, free education, and what happens to the soul once we’ve made digital copies of ourselves.
A very interesting press release appeared yesterday morning that was brought to our attention. A startup company, Gravitomagnetism, LLC, was granted a patent that enables it a multitude of applications ranging from energy generation to teleportation.
The new approach has the potential to open a powerful avenue in cellular manipulation. Whereas DNA editing makes permanent changes to the genome of a cell, the CRISPR-based RNA-targeting approach may allow researchers to make temporary changes that can be adjusted up or down, and with greater specificity and functionality than existing methods for RNA interference.
In a study published today in Science, Feng Zhang and colleagues at the Broad Institute and the McGovern Institute for Brain Research at MIT, along with co-authors Eugene Koonin and his colleagues at the NIH, and Konstantin Severinov of Rutgers University-New Brunswick and Skoltech, report the identification and functional characterization of C2c2, an RNA-guided enzyme capable of targeting and degrading RNA.
The findings reveal that C2c2—the first naturally-occurring CRISPR system that targets only RNA to have been identified, discovered by this collaborative group in October 2015—helps protect bacteria against viral infection. They demonstrate that C2c2 can be programmed to cleave particular RNA sequences in bacterial cells, which would make it an important addition to the molecular biology toolbox.
