In today’s fast-paced markets, engineers are continuously challenged to deliver products that meet market demand, improve operational efficiency and exceed customer expectations. Multiphysics simulation is an essential component of the product design workflow for creating innovative designs, especially when building prototypes becomes impractical or when taking actual measurements is not possible.
Researchers in California have created, for the first time, compounds made from mixtures of calcium hexaboride, strontium and barium hexaboride. They also demonstrated that these ceramic materials could be manufactured using a simple, low-cost manufacturing method known as combustion synthesis.
When considering potential drug delivery vehicles, liposomes are an important option and have already been approved for use with a number of therapeutic formulations. Liposomes are comprised of phospholipids and may be single- or multi-layered, can be produced in different sizes and have a hydrophilic interior and hydrophobic shell. They are biodegradable, non-toxic and capable of encapsulating both hydrophilic and hydrophobic materials.
Following an upgrade of the Continuous Electron Beam Accelerator Facility at the Thomas Jefferson National Accelerator Facility, the accelerator delivered the highest-energy electron beams it has ever produced into a target, recording the first data of the 12 GeV era. The machine sent electrons around the racetrack three times, resulting in 6.11 GeV electrons at 2 nanoAmps average current for more than an hour.
Nanotechnology has unlocked new pathways for targeted drug delivery, including the use of nanocarriers that can transport cargoes of small-molecule therapeutics to specific locations in the body. Researchers have recently demonstrated that processing can have significant influence on the size of nanocarriers for targeted drug delivery. It was previously assumed that once a nanocarrier is created, it maintains its size and shape anywhere.
Thirty years have passed since 3-D printers first appeared, but only recently have they hinted at a new era of manufacturing. The first working 3-D printer was created in 1984 by Chuck Hull of 3D Systems Corp. This early device, based on stereolithography, gave way to the first truly practical 3-D printing, or “3DP”, technology patented by the Massachusetts Institute of Technology in 1993.
Few areas of instrumentation have prompted as much development or efforts toward innovation as spectroscopy. Without sophisticated approaches to handling light, spectrometers as we know them would not function, and we would be without a deep understanding of the chemical nature of the world around us.
Driven by rapid growth in forensics, biotechnology, disease diagnostics and environmental regulations, chromatography systems have become a laboratory staple. Used for the separation of complex mixtures, detection of illicit drugs and the production of pharmaceuticals, the biotechnology and pharmaceutical industries are the prime users of chromatography techniques.
The unique properties of engineered nanoparticles have created intense interest in their environmental behavior. Due to the increased use of nanotechnology in consumer products, industrial applications and health care technology, nanoparticles are more likely to enter the environment. For this reason, it’s not only important to know the type, size and distribution of nanoparticles, but it’s also crucial to understand their impact.
A space station cargo ship will remain Earthbound for a while longer. With just over an hour remaining, the Space X company called off Monday's planned launch because of a rocket leak. A new launch date was not set; the next opportunity would be Friday. Officials said a helium leak in the first-stage of the unmanned Falcon rocket forced the postponement. The launch already had been delayed a full month for various reasons.
Recent research using free-electron laser sources has enhanced the understanding of the interface of two materials, where completely new properties can arise. For instance, two insulators and non-magnetic materials can become metallic and magnetic at their interface. The breakthrough was the discovery of a discrepancy in the number of charge carriers of two promising electronic materials.
One of the great problems in physics is the detection of electromagnetic radiation—that is, light—which lies outside the small range of wavelengths that the human eye can see. Think x-rays, for example, or radio waves. Now, researchers have discovered a way to use existing semiconductors to detect a far wider range of light than is now possible, well into the infrared range.
In a recent demonstration by researchers in Europe, miniaturized optical frequency comb sources allow for transmission of data streams of several terabits per second over hundreds of kilometers. The results, which showed a data rate of 1.44 TB/sec over 300 km, may contribute to accelerating data transmission in large computing centers and worldwide communication networks.
Biological samples bend light in unpredictable ways, returning difficult-to-interpret information to the microscope. Using a form of adaptive optics, Janelia Farm Research Campus scientists have developed a microscopy technique that can rapidly correct for distortions and sharpen high-resolution images over large volumes of tissue.
A house window that doubles as a solar panel could be on the horizon, thanks to recent quantum dot work by Los Alamos National Laboratory researchers in collaboration with scientists from Univ. of Milano-Bicocca, Italy. Their project demonstrates that superior light-emitting properties of quantum dots can be applied in solar energy by helping more efficiently harvest sunlight.
It is well known that inorganic carbon in the form of carbon dioxide, CO2, is reduced in a light driven process known as photosynthesis to organic compounds in the chloroplasts. Less well known is that inorganic carbon also affects the rate of the photosynthetic electron transport. Researchers in Sweden have recently found that its ionic form bicarbonate, has a regulating function in the splitting of water in photosynthesis.
For more than a quarter of a century, high-temperature superconductors have perplexed scientists who seek to understand the physical phenomena responsible for their unique properties. Thanks to a new study by Argonne National Laboratory, researchers have identified and solved at least one paradox in the behavior of high-temperature superconductors.
Scientists at Yale Univ. have devised a dramatically faster way of identifying and characterizing complex alloys known as bulk metallic glasses (BMGs), a versatile type of pliable glass that's stronger than steel. Using traditional methods, it usually takes a full day to identify a single metal alloy appropriate for making BMGs.
NASA is pressing ahead with Monday's planned launch of a supply ship despite a critical computer outage at the International Space Station, promising the situation is safe. Mission managers decided Sunday to proceed with the countdown for the SpaceX capsule, Dragon, already a month late in delivering more than 2 tons of cargo.
As yet, no one has found supersymmetry in our universe, including at the Large Hadron Collider. This absence of empirical evidence hasn’t stopped physicist Tarun Grover from being able to provide definitive mathematical evidence for supersymmetry in a condensed matter system. Sought after in the realm of subatomic particles by physicists for several decades, supersymmetry describes a unique relationship between particles.
For optical communication to happen, it is essential to convert electrical information into light, using emitters. On the other end of the optical link, one needs to translate the light stream into electrical signals using detectors. Current technologies use different materials to realize these two distinct functions, but this might soon change thanks to a new discovery by researchers at IBM.
For nearly a century, electrophoretic deposition (EPD) has been used as a method of coating material by depositing particles of various substances onto the surfaces of various manufactured items. Since its earliest use, EPD has been used to deposit a wide range of materials onto surfaces. This process works well, but is limited. EPD can only deposit material across the entire surface and not in specific, predetermined locations, until now.
A Purdue Univ. experiment that will test how plant cells sense and respond to different levels of gravity is scheduled to launch aboard the SpaceX Falcon 9 rocket from Cape Canaveral, Fla., on Monday (April 14). Understanding how gravity impacts plants is key for determining the conditions necessary to grow plants in space.
Lots of apps claim they can help you fight jet lag. Now Michigan researchers say mathematical formulas suggest it's possible to adjust to new time zones a bit faster than previously thought, and they created their own free app to help. Doctors have long said exposure to light is key. But how much, and when?
The U.N.'s expert panel on climate change is under pressure this week as it considers whether geoengineering should be part of the tool-kit that governments use to keep global warming in check. Drafts leaked before the conference only mentioned one of the proposed options, removing carbon dioxide from the air and storing it underground. But some countries support solar radiation management as well.