Researchers at Vienna University of Technology have discovered why sometimes spectacular micro-explosions occur and other times ultra-thin layers of material remain almost intact when charged particles are shot through them. It may seem like magic that some materials can withstand being shot thro
Scientists have developed a model that allows for the accurate prediction of hole formation based on the electron mobility of the material and the charge state of the projectile. This model enables a better understanding of the conditions under which holes will form and those in which they will not.
The model developed at the Vienna University of Technology explains why tiny holes – only a few nanometers in size – are formed in some two-dimensional materials when they are bombarded with highly charged ions, but not in others. The effect of nano-hole formation can be exploited to produce novel sieves for certain molecules.
“This results in completely different effects depending on the material,” says Anna Niggas, an experimental physicist at the Institute of Applied Physics “Sometimes the projectile penetrates the material layer without any noticeable change in the material as a result. Sometimes the material layer around the impact site is also completely destroyed, numerous atoms are dislodged and a hole with a diameter of a few nanometers is formed.
“We have now been able to develop a model that allows us to estimate very well in which situations holes are formed and in which they are not – and this depends on the electron mobility in the material and the charge state of the projectile,” says Alexander Sagar Grossek, first author of the publication in the journalThe model also explains the surprising fact that the atoms knocked out of the material move relatively slowly: The high speed of the projectile does not matter to them; they are...
Philippines Latest News, Philippines Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
1 year post-fire, questions linger about distribution of Marshall fire funds from Boulder Community FoundationThe majority of funds for Marshall fire victims (about $20 million of the $43 million raised) is being allocated to homeowners who are rebuilding. But it’s still unclear what those who don’t rebuild will receive.
Read more »
Dallas Fire-Rescue responds to 3-alarm fire at abandoned warehouseHappening now: At 5:28 a.m., Dallas Fire-Rescue say they responded to multiple 911 calls reporting a fire coming from a warehouse located at 9306 West Jefferson Boulevard.
Read more »
Exhausted Warner retires on 200 in magical 100th testShort of runs and under pressure, David Warner entered the Boxing Day test against South Africa issuing a reminder to the doubters never to underestimate the fight of a 'housing commission boy' living the dream.
Read more »
Willow Releases Magical New Character Profile Key Art PostersWith a new episode hitting DisneyPlus this week, Lucasfilm released new key art posters for the WarwickDavis & JoanneWhalley-starring Willow.
Read more »
2022 Ram 1500 TRX Earned Its KeepOur 702-hp Ram pickup seemingly did it all during its 40,000-mile test.
Read more »
Did Orwell Write That People Who Elect Corrupt Politicians Are 'Accomplices'?To figure out the truth behind this popular quote that's often misattributed to George Orwell, we reached out to a number of experts at the Orwell Society — whose patron is Richard Blair, Orwell's adopted son — and The Orwell Foundation.
Read more »