Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog – Page 9180

The high resolution and wealth of data provided by an experiment at Diamond can lead to unexpected discoveries. The piezoelectric properties of the ceramic perovskite PMN-PT (0.68Pb(Mg1/3Nb2/3)O3–0.32PbTiO3) are widely used in commercial actuators, where the strain that is generated varies continuously with applied voltage. However, if the applied voltage is cycled appropriately then there are discontinuous changes of strain. These discontinuous changes can be used to drive magnetic switching in a thin overlying ferromagnet, permitting magnetic information to be written electrically. An international team of researchers used beamline I06 to investigate a ferromagnetic film of nickel when it served as a sensitive strain gauge for single-crystal PMN-PTheir initial interpretation of the results suggested that ferroelectric domain switching rotated the magnetic domains in the film by the expected angle of 90°, but a closer examination revealed the true picture to be more complex.

Their work, recently published in Nature Materials, shows that the ferroelectric domain switching rotated the in the film by considerably less than 90° due to an accompanying shear strain. The findings offer both a challenge and an opportunity for the design of next-generation data storage devices, and will surely be relevant if the work is extended to explore the electrically driven manipulation of more complex magnetic textures.

Some develop electrical charge in response to an applied . This piezoelectric effect means that certain crystals can be used to convert into electricity or vice-versa, and piezoelectric materials are used in a variety of technologies, including the automatic focusing of cameras in mobile phones. For these applications, the strain varies continuously with applied voltage, but cycling the applied voltage can lead to discontinuous changes of strain due to ferroelectric domain switching. These discontinuous changes in strain can be used to drive magnetic switching in a thin ferromagment film, such that data can be written electrically, and stored magnetically.

Read more | >

To guarantee high quality pharmaceuticals, manufacturers need not only to control the purity and concentration of their own products, but also those of their suppliers. Researchers at the Fraunhofer Institute for Applied Solid State Physics IAF have developed a measuring system capable of identifying a wide variety of chemical and pharmaceutical substances remotely and in real time. It is perfect for the use in the pharmaceutical, chemical and food industry.

Especially for pharmaceutical and food productions a continuous control of ingredients is indispensable. Usually, this would be done by a sampling and a laboratory analysis via chromatography or spectrometers. However, such a process is time-consuming and allows only for spot checks. At Fraunhofer IAF, researchers have developed a measuring system capable of a quality control in real time. It identifies even smallest amounts of based on their molecular composition.

Read more | >

On October 3, 2018, cell phones across the United States received a text message labeled “Presidential Alert.” The message read: “THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed.”

It was the first trial run for a new national alert system, developed by several U.S. government agencies as a way to warn as many people across the United States as possible if a disaster was imminent.

Now, a new study by researchers at the University of Colorado Boulder raises a red flag around these alerts—namely, that such emergency alerts authorized by the President of the United States can, theoretically, be spoofed.

Read more | >

Nuclear magnetic resonance (NMR) spectroscopy is one of the most important methods of physicochemical analysis. It can be used to determine precise molecular structures and dynamics. The importance of this method is also evidenced by the recognition of ETH Zurich’s two latest Nobel laureates, Richard Ernst and Kurt Wüthrich, for their contributions to refining the method.

The technique is based on , which takes advantage of the fact that certain atomic nuclei interact with a magnetic field. A key factor here is nuclear spin, which can be compared with the spinning of a child’s top. Similar to a top that begins to wobble, a phenomenon called precession, nuclear spins that are exposed to a magnetic field begin to precess. This generates an electromagnetic signal that can be measured using an induction coil.

Read more | >

Exercise really does influence how we age, and a new study shows how regular exercise in later life can help offset the decline of NAD+ and NAMPT, two important molecules that facilitate cellular energy production, in skeletal muscle.

NAD+ and mitochondria

The mitochondria are the power stations of the cell and provide the energy that our cells need in order to function. As we age, our mitochondria become increasingly dysfunctional and inefficient, and they produce excessive waste in the form of free radicals, which bounce around the interior of the cell, striking and damaging the cellular machinery within.

Read more | >

The next five years will mark a dramatic enterprise shift toward the edge of networks, where emerging technologies can be harnessed to radically improve user experiences, transform business models, and generate vast revenue opportunities, according to a new book by Fast Future in collaboration with Aruba, a Hewlett Packard Enterprise company.

Opportunity at the Edge: Change, Challenge, and Transformation on the Path to 2025, developed by Fast Future in collaboration with Aruba, reports that edge technologies – those which process and analyze user data where people connect to a network – will revolutionize corporate strategies, create more dynamic, responsive, and personalized customer and employee experiences, enable powerful business and revenue models, and even catalyze the growth of entirely new industries. To unlock these opportunities, the book argues that enterprises must embrace fundamental change, engaging in widespread strategic, structural, and leadership transformation.

Morten Illum, VP EMEA at Aruba, comments: “The findings in this book highlight the vast commercial potential for enterprises utilizing edge technologies, if companies are willing and able to enact the considerable organizational changes needed. The edge represents a dramatic overhaul in how companies understand, service, and meet the needs of their customers and employees. It will be a world defined by dynamic, immediate, and personalized services.”

Key Themes and Findings

Commissioned to explore the scale of possibilities presented by edge technologies in the next 3–5 years, the book features insights from 19 leading global CIOs, technology leaders, industry experts and futurists, and a perspectives survey of 200 future thinkers from across the globe. It explores the edge technologies that are driving change, the use cases and businesses opportunities these are creating, and the ways in which organizations can adapt to take advantage. Key trends that emerged include:

  • The edge of the network holds the key to industry transformation: The edge is designed to enable and capitalize on modern digital experiences at the convergence of people, apps, and things – allowing customer and ecosystem partners to take these actionable insights to then create “experiences” for employees and customers. This is making it possible for businesses and organizations in various industries to leverage data and insights from the edge to deliver new and immersive experiences to consumers and end customers. It is driving sectors from education and retail to healthcare and hospitality to rethink how they act today. New types of experiences such as location-aware mobile engagement, digitally assisted patient care, and user-aware meeting rooms can give organizations a competitive advantage.

STOP. THINK. REFLECT. S Science has made it abundantly clear that the world around us is an extremely dynamic place, and the secret of our existence – the secret of life itself – is change: All living organisms must either adapt to the changes taking place around them or perish. Science has also…

Read more | >

Physicists have spotted the highest-energy light ever seen. It emanated from the roiling remains left behind when a star exploded.

This light made its way to Earth from the Crab Nebula, a remnant of a stellar explosion, or supernova, about 6,500 light-years away in the Milky Way. The Tibet AS-gamma experiment caught multiple particles of light — or photons — from the nebula with energies higher than 100 trillion electron volts, researchers report in a study accepted in Physical Review Letters. Visible light, for comparison, has just a few electron volts of energy.“This energy regime has not been accessible before,” says astrophysicist Petra Huentemeyer of Michigan Technological University in Houghton, who was not involved with the research. For physicists who study this high-energy light, known as gamma rays, “it’s an exciting time,” she says.

Read more | >