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Tech Xplore / Seeing beneath the surface during metal additive manufacturing
When we watch a metal part being built by laser-based metal additive manufacturing (AM), we're only seeing part of the story. In one kind of metal AM process, a high-powered laser sweeps across a bed of metal powder, creating ...
Phys.org / Iron hydride enters an exotic state of matter under Earth's inner-core conditions
Earth's inner core, composed primarily of iron with a small percentage of light elements, may enter a superionic state at extreme pressure and temperature, according to experimental results from researchers at Science Tokyo. ...
Phys.org / Q&A: How Brown University is navigating the rise of generative AI use in the classroom
In just a few short years, generative artificial intelligence tools have made a leap from novelties that produce stilted text to genuine societal disruptors that may alter the way people learn, work and even think.
Phys.org / Schools are starting to teach AI literacy. For many, that means helping kids see chatbots' flaws
Artificial intelligence chatbots have become the bane of teachers everywhere, but to prepare for the new school year, a group of educators in Charleston, South Carolina, packed into a high school auditorium and talked about ...
Phys.org / New measurements explain how silicon and diamond achieve extreme reversible stretching
A research team led by Yang Lu from the Department of Mechanical Engineering at the Faculty of Engineering, The University of Hong Kong (HKU), has uncovered the microscopic physical nature of ultralarge elasticity in covalent ...
Phys.org / Hypersonic impact rapidly transforms diamond into graphite, revealing energy-absorbing mechanism
Rice University researchers have developed a way to stabilize diamond during high-temperature and low-pressure processing, creating a strong bulk composite and discovering that high-speed collisions can rapidly transform ...
Phys.org / DNA's physical properties may shape which mutations evolution preserves
Nearly every cell in the human body contains essentially the same genetic information, yet different cells activate different genes. For regulatory proteins to reach these genes, DNA must be accessible. This accessibility ...
Phys.org / Interstellar travel IV: Solar, magnetic, & directed-energy sails
Welcome back to our series on interstellar travel! In our first installment, we examined attempts to realize nuclear propulsion and how the technology could be used to reach the nearest star. In our second, we examined how ...
Tech Xplore / Expert comment: New nuclear capacity won't fix today's energy problems
The Fukushima nuclear disaster on March 11, 2011, triggered by a tsunami and leading to multiple reactor meltdowns, shook confidence in nuclear safety well beyond Japan. In Germany, it was a turning point: Chancellor Angela ...
Phys.org / RNA droplets may have helped start life on Earth
It's one of the origins-of-life chicken-or-egg problems: How could RNA have helped give rise to the first cells before there were cells to contain it?
Phys.org / Universal pattern revealed in quantum matter
When different materials transition from one phase to another, such as water coming to a boil or a magnet losing its ability to attract metals, something remarkable can happen: They begin to behave identically, following ...
Phys.org / Why isn't the accounting profession more diverse? Research points to the real levers of change
For the past few decades, universities, employers and professional organizations worldwide have invested in mentoring programs, scholarships and student support initiatives to diversify careers such as professional accounting. ...
