Everything around us is made of atoms, but it turns out that the building blocks of the Universe are far stranger than that.
Category: particle physics – Page 659
A second ‘Big Bang’ could end our universe in an instant — and it’s all because of a tiny particle that controls the laws of physics
Our known universe may end the same way it was created: With a big, sudden bang.
That’s according to new research from a group of Harvard physicists, who found that the destabilization of the Higgs Boson — a tiny quantum particle that gives other particles mass — could lead to a huge explosion of energy that would consume everything in the known universe.
The energy released by the event would destabilize the laws of physics and chemistry.
Study reveals more than 100 tiny plastics in every meal
We could be swallowing more than 100 tiny plastic particles with every main meal, a Heriot-Watt study has revealed.
The plastic, which can come from soft furnishings and synthetic fabrics, gets into household dust which falls on plates and is consumed.
The university academics made the discovery after putting Petri dishes containing sticky dust traps on the table next to dinner plates in three homes at meal times.
Excitement Mounts As The Large Hadron Collider Is Switched On Again And Begins A New Year Of Experiments
This marks the seventh year that the particle accelerator has been in operation.
At 12:17 p.m. on Friday, March 30, the Large Hadron Collider at CERN was switched on once again, making 2018 the seventh year that the world’s largest particle accelerator has been in operation. It is also excitingly the fourth year running now that the LHC will have achieved 13 TeV collision energy.
Over the past four months, much maintenance has been conducted on the LHC, but with the work now completed the ATLAS experiment has begun a glorious new year as the Large Hadron Collider is now back in the business of circulating proton beams, as ATLAS report.
Scientists mix the unmixable to create ‘shocking’ nanoparticles
Making a giant leap in the ‘tiny’ field of nanoscience, a multi-institutional team of researchers is the first to create nanoscale particles composed of up to eight distinct elements generally known to be immiscible, or incapable of being mixed or blended together. The blending of multiple, unmixable elements into a unified, homogenous nanostructure, called a high entropy alloy nanoparticle, greatly expands the landscape of nanomaterials—and what we can do with them.
This research makes a significant advance on previous efforts that have typically produced nanoparticles limited to only three different elements and to structures that do not mix evenly. Essentially, it is extremely difficult to squeeze and blend different elements into individual particles at the nanoscale. The team, which includes lead researchers at University of Maryland, College Park (UMD)’s A. James Clark School of Engineering, published a peer-reviewed paper based on the research featured on the March 30 cover of Science.
“Imagine the elements that combine to make nanoparticles as Lego building blocks. If you have only one to three colors and sizes, then you are limited by what combinations you can use and what structures you can assemble,” explains Liangbing Hu, associate professor of materials science and engineering at UMD and one of the corresponding authors of the paper. “What our team has done is essentially enlarged the toy chest in nanoparticle synthesis; now, we are able to build nanomaterials with nearly all metallic and semiconductor elements.”
A Material World – Building a Future from the Atoms Up: Rob Moore Public Lecture
Wednesday Apr. 4, 2018 at 7 PM ET
The live webcast will appear on this page.
From the Stone Age to the Silicon Age, nothing has had a more profound influence on the world than our understanding of the materials around us. The Industrial Revolution of the 19th century and the Information Revolution of the 20th were fueled by humankind’s ability to understand, harness, and control materials.
IBM Scientists First to Demo Rocking Brownian Motors for Nanoparticles
Today, our IBM Research team published the first real world demonstration of a rocking Brownian motor for nanoparticles in the peer-review journal Science. The motors propel nanoscale particles along predefined racetracks to enable researchers to separate nanoparticle populations with unprecedented precision. The reported findings show great potential for lab-on-a-chip applications in material science, environmental sciences or biochemistry.
No More Fairy Tales
Do you remember the Grimm version of Cinderella when she had to pick peas and lentils out of the ashes? Now imagine that instead of peas and lentils you have a suspension of nanoparticles, which are only 60 nanometer (nm) and 100 nm in size — that’s 1,000 times smaller than the diameter of a human hair. Using previous methods, one could separate them with a complicated filter or machines, however these are too bulky and complex to be integrated into a handheld lab-on-a-chip.
CERN Researchers Think They Saw Rare Particle Decay That Could Lead to New Physics
Physicists in Switzerland are on a subatomic hunt that, they hope, will reveal some entirely new results beyond the limits of their theories.
An experiment at CERN in Geneva, called NA62, is designed to let scientists watch a rare kind of particle decay. The team, using a whole new method, may have finally spotted what they’re looking for.
You’ve probably heard of quarks, the building blocks of other subatomic particles. There are six: the common up and down quark, the strange and charm quarks, and the rarest top and bottom quarks. Protons and neutrons contain only up and down quarks.
Richard Taylor, Stanford physicist who won Nobel, dies
Shortly after learning he’d won the Nobel Prize in physics, Richard Taylor stared at his reflection in a mirror.
“Murray Gell-Mann is smart. Dick Garwin is smart,” he told himself, referring to two pioneering 20th century physicists. “You are lucky.”
The self-effacing Taylor, a Stanford University professor emeritus of physics who shared the Nobel in 1990 for his role in the discovery of quarks, died Feb. 22 at his home on the Stanford campus. He was 88.