single atom
The power of motifs as inductive bias for learning molecular distributions
Sommer, Johanna, Hetzel, Leon, Lüdke, David, Theis, Fabian, Günnemann, Stephan
Machine learning for molecules holds great potential for efficiently exploring the vast chemical space and thus streamlining the drug discovery process by facilitating the design of new therapeutic molecules. Deep generative models have shown promising results for molecule generation, but the benefits of specific inductive biases for learning distributions over small graphs are unclear. Our study aims to investigate the impact of subgraph structures and vocabulary design on distribution learning, using small drug molecules as a case study. To this end, we introduce Subcover, a new subgraph-based fragmentation scheme, and evaluate it through a two-step variational auto-encoder. Our results show that Subcover's improved identification of chemically meaningful subgraphs leads to a relative improvement of the FCD score by 30%, outperforming previous methods. Our findings highlight the potential of Subcover to enhance the performance and scalability of existing methods, contributing to the advancement of drug discovery. Generative models for molecules offer a way to create new compounds with specific properties, which can be useful in various fields, including drug discovery, material science, and chemistry (Bian & Xie, 2021; Choudhary et al., 2022; Hetzel et al., 2022; Zhu et al., 2022; Du et al., 2022).
Quantum brain: The hidden answers to the open questions in AI
In a recent report published on Nanotechnology, physicists at Radboud University stated that they have moved a crucial step ahead in developing a "quantum brain." This means an entirely new generation of computers can become possible with an intelligent material that learns by a physical change in itself, similar to a human brain. This can open up a new area of challenges for AI professionals. An intelligent human brain learns by changing itself at the physical level. Thus, it can be clearly explained by applying quantum mechanical theories such as superposition and entanglement.
Scientists capture MRI scan of a single ATOM using a microscopic needle
Sometimes the smallest breakthroughs are actually the most pivotal. In an unprecedented demonstration, researchers from the U.S. and South Korea were able to use a technology that's nearly identical to today's full-size magnetic resonance imaging (MRI) machines to take a miniature snapshot of sub-cellular life. The method involves the use of a highly specialized device called a scanning and tunneling microscope, which is able to take images of atomic structures by scanning a sharp metal tip over a surface. Using a novel new technique, researchers were able to get a snapshot of a single atom. The scans (shown) reveal the varying strengths of the atom's magnetic field Using a new type of MRI technique, scientists were able to take a snapshot of an individual atom. Using a special device called a scanning and tunneling microscope researchers probed a piece of iron and titanium with a needle that was just a few atoms wide.
Scientists Are Using AI to Painstakingly Assemble Single Atoms
Forget ruby-encrusted swords or diamond-tipped chainsaws. The scanning probe microscope is, quite literally, the sharpest object ever made. Hidden under its bulky silver exterior is a thin metal wire, as fine as a human hair. Scientists wield the wire not as a weapon, but as an intricate paintbrush--using its needlelike tip to position single atoms on a tiny semiconductor canvas. Ever since scientists at IBM invented the scanning probe microscope some 35 years ago, researchers have used it to create designs both goofy and groundbreaking.
Scientists Are Using AI to Painstakingly Assemble Single Atoms
Forget ruby-encrusted swords or diamond-tipped chainsaws. The scanning probe microscope is, quite literally, the sharpest object ever made. Hidden under its bulky silver exterior is a thin metal wire, as fine as a human hair. Scientists wield the wire not as a weapon, but as an intricate paintbrush--using its needlelike tip to position single atoms on a tiny semiconductor canvas. Ever since scientists at IBM invented the scanning probe microscope some 35 years ago, researchers have used it to create designs both goofy and groundbreaking.
Beauty of science revealed by EPSRC photo contest winners
An image of a single atom of the metal strontium suspended in electric fields has won a prestigious science photography prize. David Nadlinger's photo, Single Atom In An Ion Tap, was captured through the window of a vacuum chamber in an Oxford University laboratory, using an ordinary digital camera on a long exposure shot. Two metal electrodes, two millimetres apart, held the strontium almost motionless as it was illuminated with a blue-violet-coloured laser. The image beat more than 100 entries to claim first place overall in the 2018 Engineering and Physical Sciences Research Council (EPSRC) science photography competition. Mr Nadlinger said: 'The idea of being able to see a single atom with the naked eye had struck me as a wonderfully direct and visceral bridge between the minuscule quantum world and our macroscopic reality.
What if Quantum Computers Used Hard Drives Made of DNA?
You've heard the hype: The quantum computer revolution is coming. Physicists say these devices will be fast enough to break every encryption method banks use today. Their artificial intelligence will be so advanced that you could load in the periodic table and the laws of quantum mechanics, and they could design the most efficient solar cell to date. And they'll be here soon: Writing in Nature earlier this month, Google researchers said they anticipate the first commercial quantum computers in five years, and the company wants to build and test a 49-qubit--that's "quantum bit"--quantum computer by the end of this year. Some experts say that a 50-qubit computer could outperform any conventional computer.
IBM scientists create magnetic atom that could store information
March 12, 2017 --In traditional computers, the smallest units of information exists in one of two states: 1 and 0, or on and off. Long strings of 1s and 0s can store increasingly complex information that can be used use to perform useful tasks, but that information storage is limited by the size of those individual bits of information in a computer's hard drive. But now, researchers have figured out a way to magnetically store information on the smallest unit possible: a single atom. There's a long way to go before atom-sized information storage technology can make it to your home computer or smartphone, but now researchers have proven that it is possible to store information on an incredibly small level. Theoretically, this new technology could lead to massive data storage capacities on an impressive scale – even in the smallest of devices.
The End of Digital Tyranny: Why the Future of Computing Is Analog
Most of us rarely think about it, but when we turn on our smartphones and PCs, we're giving ourselves over to machines that reduce every single task to a series of 1s and 0s. But according to Doug Burger, a researcher with Microsoft's Extreme Computing Group, this may be coming to an end. Burger thinks we could be entering a new era where we don't need digital accuracy. To hear him tell it, the age of really big data may well be an age of slightly less-accurate computing. We could drop the digital straightjacket and write software that's comfortable working on hardware that sometimes makes errors.