Archive for the ‘quantum physics’ category: Page 793
May 9, 2016
How Quantum Entanglement Can Help You Understand Many-Worlds
Posted by Karen Hurst in categories: materials, quantum physics
Quantum Entanglement by Orzel part 2.
Entanglement is weird, but also provides a nice, concrete experimental framework that can ground an explanation of how decoherence hides the existence of other branches of the wavefunction.
May 9, 2016
Samsung’s Quantum Dot TV Tech to Find Medical Applications
Posted by Karen Hurst in categories: bioengineering, chemistry, electronics, food, nanotechnology, quantum physics
Samsung get into the cancer treatment space with their own Q-Dot technology? Another reason for the FDA to show up in tech’s backyard; lookout for all those future federal and state regs & compliance training that will be coming that eats up 20 hours each month of your scientists and engineering talent’s time.
For a lot of users, Samsung might be known best for their smartphones and other mobile devices, but the company is so much more than that. Many of you reading this might have one of Samsung’s Super HD TV sets, a curved Samsung TV or some other model of theirs. Next to smartphones one of their more popular consumer electronics is of course of TVs, and with the advent of new technology such as Quantum Dot, Samsung is getting even better at producing a great image. One area that you might expect to find this Quantum Dot technology being used is for medical uses, but that’s just what researchers have been exploring recently.
Explaining a Quantum Dot can become quite tricky, but to cut a long story short, they are semiconductors that are so small they register at the nanoscale side of things. In terms of Quantum Dots used in television displays, it’s their ability to precisely tune to a specific and exact part of the color spectrum that makes them so attractive, not to mention their much lower power draw. Now, Kim Sung-jee, a professor of the Chemistry department at Pohang University of Science and Technology (POSTECH), has said that “when combining protein which clings to cancer cells and quantum dots, it can be used to seek out cancer cells in the body”. It’s reasoned that the potential for these Quantum Dots to be so precise in terms of color reproduction can help physicians track down certain cancer cells.
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May 9, 2016
First single-enzyme method to produce quantum dots revealed
Posted by Karen Hurst in categories: engineering, particle physics, quantum physics, solar power, sustainability
Creating Q-Dots/ QDs (Acronym seems to depend on which reference book, article that you read) more cheaply and efficiently too.
Quantum dots (QDs) are semiconducting nanocrystals prized for their optical and electronic properties. The brilliant, pure colors produced by QDs when stimulated with ultraviolet light are ideal for use in flat screen displays, medical imaging devices, solar panels and LEDs. One obstacle to mass production and widespread use of these wonder particles is the difficulty and expense associated with current chemical manufacturing methods that often requiring heat, high pressure and toxic solvents.
But now three Lehigh University engineers have successfully demonstrated the first precisely controlled, biological way to manufacture quantum dots using a single-enzyme, paving the way for a significantly quicker, cheaper and greener production method. Their work was recently featured in an article in The New York Times called “A curious tale of quantum dots.”
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May 9, 2016
The Quantum Experience: Feynman’s vision comes into focus
Posted by Karen Hurst in categories: computing, quantum physics
Great article about a mad-scientist whose vision caused the world to look cross-eyed. Many of us have been there before some time in our lives.
In 1981, Richard Feynman urged the world to build a quantum computer. In his own words.
“Nature isn’t classical, dammit, and if you want to make a simulation of nature, you’d better make it quantum mechanical, and by golly it’s a wonderful problem, because it doesn’t look so easy.”
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Communication Quantum Style!
https://www.sciencenews.org/article/communicating-covertly-goes-quantum
Researchers are working to make quantum messages that are undetectable.
May 9, 2016
Researchers Making Progress With Quantum Computing
Posted by Karen Hurst in categories: computing, governance, government, internet, particle physics, quantum physics
I personally can confirm that QC is not being worked on and advance by just a couple groups such as D-Wave and IBM. The questions/bumps in the road that we will all face is threefold:
1) how do we standardize the QC? right now (like most innovation) is done in siloes and limited cross-collaboration across government, labs & universities, and commercial companies. 2) governance and compliance; how will these need to change across multiple areas 3) id & mitigate all impacts instead of after deployment (don’t be reactive) because we will not have that luxury due to hackers.
There is a temptation to lump quantum computing in with technologies such as fusion power in the sense that both have been proposed for decades with the promise of tremendous leaps in performance.
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May 9, 2016
Neutrons tap into magnetism in topological insulators at high temperatures
Posted by Karen Hurst in categories: computing, particle physics, quantum physics
I know that I reported on this a few weeks ago; however, this article shares some additional insights on how this new method will enable more efficient smaller devices including promoting stabilization in Quantum Computing (QC)…
A multi-institutional team of researchers has discovered novel magnetic behavior on the surface of a specialized material that holds promise for smaller, more efficient devices and other advanced technology.
Researchers at the Department of Energy’s Oak Ridge National Laboratory, Massachusetts Institute of Technology and their collaborators used neutron scattering to reveal magnetic moments in hybrid topological insulator (TI) materials at room temperature, hundreds of degrees Fahrenheit warmer than the extreme sub-zero cold where the properties are expected to occur.
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May 9, 2016
Quantum Swing: a pendulum that moves forward and backwards at the same time
Posted by Karen Hurst in categories: particle physics, quantum physics
One of those freaky states of Quantum. Wild.
Two-quantum oscillations of atoms in a semiconductor crystal are excited by ultrashort terahertz pulses. The terahertz waves radiated from the moving atoms are analyzed by a novel time-resolving method and demonstrate the non-classical character of large-amplitude atomic motions.
The classical pendulum of a clock swings forth and back with a well-defined elongation and velocity at any instant in time. During this motion, the total energy is constant and depends on the initial elongation which can be chosen arbitrarily. Oscillators in the quantum world of atoms and molecules behave quite differently: their energy has discrete values corresponding to different quantum states. The location of the atom in a single quantum state of the oscillator is described by a time-independent wavefunction, meaning that there are no oscillations.
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May 7, 2016
New study looks into the everyday miracle that is water
Posted by Karen Hurst in category: quantum physics
Whatever the truth about claims that cloud-seeding was responsible for the floods in March, one thing is certain – during the downpours, thousands of people in the UAE were exposed to a bizarre quantum substance at the focus of intense scientific research.
Colourless and odourless, its behaviour is unlike that of any other known compound. While most shrink when they freeze, this stuff expands. It’s very hard to be heated up but once turned into liquid, it’s extremely resistant to pressure.
Exposure to it in any form can be fatal. Its liquid form is responsible for dozens of deaths each year in the UAE.
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