Harvard Creates First Solid Metallic Hydrogen; Experts Not Convinced
More 80 years since it was theorized, researchers at Harvard revealed they have created the very first solid metallic hydrogen on Earth. This is considered a wonder material which can be used in many applications such as super-powerful rocket fuels. However, it looks like some scientists are not convinced with their findings.
Metallic hydrogen first theorized by Eugene Wigner and Hillard Bell Huntington in 1935. It is a type of degenerate matter and in this phase, hydrogen behaves as an electrical conductor. There are speculations of presence of metallic hydrogen in gravitationally compressed interiors of Jupiter, Saturn, and other exoplanets.
Creating Metallic Hydrogen
In a study published in the journal, Science, on Thursday, Jan. 26, Harvard scientists revealed they used an anvil fitting inside a cryostat to cool a hydrogen sample just above absolute zero. They also found a way to remove irregularities in the diamonds and turned the pressure to up to 495 billion pascals which is about 5 million times higher than sea level atmospheric pressure.
They then squeezed their hydrogen gas at high pressure and it started to accumulate to a shiny material. Prof Isaac Silvera of Harvard University revealed that it became a reflective material which they believed was solid metallic hydrogen. The material they got has a reflectivity of 90 percent, which is equivalent to that of aluminium mirror.
Doubts And Criticisms
Some experts are not convinced with their findings. Alexander Goncharov, a geophysicist at the Carnegie Institution for Science questioned their methods saying the material might not be hydrogen. Paul Loubeyre, a physicist at France's Atomic Energy Commission in Bruyères-le-Châtel urged the researchers to redo their measurements of the pressure.
"I don't think the paper is convincing at all," Loubeyre told Nature. "If they want to be convincing, they have to redo the measurement, really measuring the evolution of pressure. Then they have to show that, in this pressure range, the alumina is not becoming metallic," he added. Meanwhile, Eugene Gregoryanz, a physicist at the University of Edinburgh shares the same opinion as Loubeyre, He described the paper on solid metallic hydrogen as "complete garbage," cited The BBC.
Time Crystals: New Phase Of Matter Revealed By Scientists
Scientists revealed a new, non-equilibrium phase of matter. The atom lattice of time crystals repeat in time.
First Human-Pig Chimera Created Using Stem Cell
Scientists inject human stem cells to pig embryos to create human-pig chimeras. Their ultimate goal is to grow human organs from stem cells in animal hosts.
This Method Can Stop Tsunamis Before It Hit Shorelines
A new study proposed a method that can minimize the damage or possible stop tsunamis -- by firing acoustic-gravity waves to reduce the amplitude or height of oncoming tsunami.
Aliens Send Mysterious Signals To Earth, Harvard Claims
Scientists claim that mysterious radio signals are actually alien messages to humans. Harvard scientists are currently exploring the possibilities of receiving messages emanating from alien technology.
Controversial Superconductor Breakthrough! Scientists Create 'Metallic' Hydrogen
Scientists from Harvard claim that they have succeeded in creating metallic hydrogen. This breakthrough has wide range of applications - some even claim this could probably get us to Mars!
MORE IN ITECHPOST
Three Steps to Avoid Geographic Restrictions on the Internet
More and more websites and apps use geolocation for different purposes. Knowing the location from which users access their services allow service and solutions providers to deliver targeted content, specific features, and even a unique user experience. On a very basic level, geolocation can be used to automatically customize the language and currency of an e-commerce site.
New Retroreflective Material Could be Used in Nighttime Color-Changing Road Signs
BUFFALO, N.Y. -- A thin film that reflects light in intriguing ways could be used to make road signs that shine brightly and change color at night, according to a study that will be published on Aug. 9 in Science Advances.
Top 5 Video Games to Play for a Truly Unique First Date
Video games have a way of taking us outside of ourselves and live in a fantasy world. It's even better when you're playing a game with someone special!