Physicists at the University of Maryland have developed a powerful new method to detect radioactive material. By using an infrared laser beam to induce a phenomenon known as an electron avalanche breakdown near the material, the new technique is able to detect shielded material from a distance. The method improves upon current technologies that require close proximity to the radioactive material.
Posted on 22 March 2019 | 6:00 pm
Did you know that music and diagnostic imaging have something in common? Sounds have a lower or higher pitch depending on the size of the object that creates them. Tubas and double basses are big and produce deep low-pitch sounds, while flutes and violins are small and produce high-pitched sounds. What's interesting is that the same effect occurs when biological structures like cells or tissues emit sound—the pitch varies with size.
Posted on 22 March 2019 | 4:51 pm
Understanding how chemical reactions happen on tiny crystals in liquid solutions is central to a variety of fields, including materials synthesis and heterogeneous catalysis, but obtaining such an understanding requires that scientists observe reactions as they occur.
Posted on 22 March 2019 | 2:00 pm
DESY and MPSD scientists have created high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.
Posted on 22 March 2019 | 1:40 pm
Researchers have developed a microscope specifically for imaging large groups of interacting cells in their natural environments. The instrument provides scientists with a new tool for imaging neurons in living animals and could provide an unprecedented view into how large networks of neurons interact during various behaviors.
Posted on 21 March 2019 | 2:00 pm
New photonic tools for medical imaging can be used to understand the nonlinear behavior of laser light in human blood for theranostic applications. When light enters biological fluids it is quickly scattered, however, some cell suspensions can induce nonlinear responses in laser beams to self-focus and enhance the penetration of light for biomedical applications as a quantifiable marker of disease. In a recent study now published in Light: Science and Applications, Rekha Gautam and her colleagues at the San Francisco State University and an international team of co-workers showed that a laser beam shining through red blood cell suspensions could become "self-trapped." The process reduced light scattering to retain the power of the beam of laser light within the biological samples.
Posted on 21 March 2019 | 1:30 pm
Light-by-light scattering is a very rare phenomenon in which two photons interact, producing another pair of photons. This process was among the earliest predictions of quantum electrodynamics (QED), the quantum theory of electromagnetism, and is forbidden by classical physics theories (such as Maxwell's theory of electrodynamics).
Posted on 20 March 2019 | 1:01 pm
Researchers at Caltech have designed a way to levitate and propel objects using only light, by creating specific nanoscale patterning on the objects' surfaces.
Posted on 19 March 2019 | 12:40 pm
Researchers at the University of Sydney, Swinburne University of Technology and the Australian National University have collaborated to develop a solar absorbing, ultrathin film with unique properties that has great potential for use in solar thermal energy harvesting.
Posted on 19 March 2019 | 11:50 am
Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way.
Posted on 19 March 2019 | 11:42 am
"Frustration" plus a pulse of laser light resulted in a stable "supercrystal" created by a team of researchers led by Penn State and Argonne National Laboratory, together with University of California, Berkeley, and two other national laboratories.
Posted on 18 March 2019 | 5:33 pm
Lasers play a vital role in everything from modern communications and connectivity to bio-medicine and manufacturing. Many applications, however, require lasers that can emit multiple frequencies—colors of light—simultaneously, each precisely separated like the tooth on a comb.
Posted on 18 March 2019 | 5:27 pm
The mass production of flat optical devices with sub-wavelength structures could soon be a reality, thanks to a metasurface fabrication technique developed by researchers at A*STAR.
Posted on 18 March 2019 | 1:50 pm
The world is now surrounded by many digital devices. People are using different appliances and machines just to ease up their life and save a lot of time. After the invention of video games in around 1950s, the craze of playing it only saw an upward trend. Nowadays, there are games which are present in […]
Posted on 18 March 2019 | 6:22 am
Each belonging in your home even its a plant is valuable in such case protecting it will make sense. Regardless of your resident size, it’s prerequisite to safeguard with a fence. Seriously peeps, fence worth your investment why because it offers topmost privacy. When fence installed in your surrounding then you can set free from […]
Posted on 15 March 2019 | 1:12 pm
Researchers have repurposed an algorithm originally developed for Netflix's 2009 movie preference prediction competition to create a method for acquiring classical Raman spectroscopy images of biological tissues at unprecedented speeds. The advance could make the simple, label-free imaging method practical for clinical applications such as tumor detection or tissue analysis.
Posted on 14 March 2019 | 2:00 pm
Scientists have developed a pioneering new technique that could pave the way for the next generation of optical tweezers.
Posted on 14 March 2019 | 1:59 pm
High-capacity optical communication can be accomplished by multiplexing multiple light-carrying orbital angular momentum (OAM) channels. However, in turbulent environments, optical scattering and 'speckle patterns' occur due to ambient, atmospheric microparticles and significantly decrease the orthogonality between OAM channels, demultiplexing (extracting information) and increasing crosstalk during communication. In a recent study now published in Light: Science & Applications, Lei Gong and co-workers at the departments of optics and optical engineering, medical engineering, electrical engineering and physical sciences in China and the USA developed a 'scattering-matrix-assisted retrieval technique' (SMART) to efficiently recover scattered data from multiplexed OAM channels. In the study, they used 24 OAM channels in parallel, passing through a scattering medium to demultiplex the channels from the scattered optical fields and achieve minimal experimental crosstalk approximating -13.8 dB.
Posted on 14 March 2019 | 1:30 pm
Lawmakers and decision takers have never loved the concept of gambling, in fact they have a much deeper hate for online sports or mobile phone gambling which has been witnessed a lot of times. As the rollouts are all set to legalize gambling, numerous complications are still being faced by the app designers to gambling […]
Posted on 13 March 2019 | 1:51 pm
Antennas catch radio waves, a form of electromagnetic radiation, from the air and convert the energy into electrical signals that feed modern telecommunications. They can also convert electrical signals into radio waves. Without antennas, the world would be a much different place than it is today. Optical engineers and scientists like Anthony J. Hoffman, associate professor in the Department of Electrical Engineering at the University of Notre Dame, are working toward leveraging these devices to control light instead of radio waves.
Posted on 13 March 2019 | 1:21 pm
EPFL scientists have developed a new image-processing method that can capture extremely rapid phenomena using any type of camera. Their method, called the Virtual Frame Technique, delivers better performance than any commercial high-speed camera and is affordable and accessible to anyone.
Posted on 13 March 2019 | 11:31 am
Researchers at the University of Michigan and City University of New York have recently proposed and experimentally validated a transparent, electronically tunable metasurface. This metasurface, presented in a paper published in Physical Review X, can rotate the polarization of an arbitrarily polarized incident wave without changing its axial ratio.
Posted on 12 March 2019 | 1:30 pm
Researchers have developed the first wearable probe that enhances the sense of touch by imaging and quantifying the stiffness and elasticity of biological tissue. The device is being developed to improve the surgical removal of breast cancer and might also be useful for brain and liver surgery and other types of cancer.
Posted on 12 March 2019 | 1:09 pm
A team of University of Maryland bioengineering researchers have developed a microscopy technique that could one day be used to improve LASIK and eliminate the "surgery" aspect of the procedure. Their findings were published today in Physical Review Letters.
Posted on 12 March 2019 | 11:41 am
There are many uses of a corrugated box. Basically, the corrugated box supplier makes it for the shipping purpose. It has to be made to withstand wear and tear and at any cost protect what is inside it. These are even used when fragile objects have to be shipped. It is strong enough that even […]
Posted on 12 March 2019 | 6:58 am
Scientists in the Emergent Photonics Lab (EPic Lab) at the University of Sussex have made a breakthrough to a crucial element of an atomic clock—devices which could reduce our reliance on satellite mapping in the future—using cutting-edge laser beam technology. Their development greatly improves the efficiency of the lancet (which in a traditional clock is responsible for counting), by 80% - something which scientists around the world have been racing to achieve.
Posted on 11 March 2019 | 5:14 pm
Discovery allows scientists to look at how 2-D materials move with ultrafast precision.
Posted on 11 March 2019 | 4:57 pm
Technology originally developed for CERN's Large Hadron Collider and then flown in space by ESA is now being used to analyse historic artworks, helping to detect forgeries.
Posted on 11 March 2019 | 11:48 am
Search engine optimization (SEO) is extremely important these days to draw attention to your websites or web pages. No matter what quality of content you produce if your page is not SEO friendly people will most probably not even get to have a look at it. Here are a few tips you can try out […]
Posted on 11 March 2019 | 11:10 am
Battle games have always been our favorite! And when it comes to high graphics and extraordinary plot, how can we even forget about Block City Wars? Well, there are so many things that we fall in love with, but there are only a few that stay forever. The amusement, thrill, craziness, and twists in this […]
Posted on 11 March 2019 | 9:12 am
Watching TV and other media is very good entertainment for people of all age groups. With all new channels and programs coming up, IPTV or the Internet Protocol Television, is becoming very popular and very widely used. In some cases, to stream some programs using an IPTV, you may need to use a VPN. A […]
Posted on 11 March 2019 | 9:11 am
Researchers of the Laboratory for Attosecond Physics at LMU and the Max Planck Institute for Quantum Optics have developed a microscope that tracks the motion of electrons.
Posted on 8 March 2019 | 12:36 pm
There's an entire world our eyes miss, hidden in the ranges of light wavelengths that human eyes can't see. But infrared cameras can pick up the secret light emitted as plants photosynthesize, as cool stars burn and batteries get hot. They can see through smoke and fog and plastic.
Posted on 7 March 2019 | 6:06 pm
There are a number of reasons why it is always a good idea to play some sort of game on your smartphone. This is something that will always keep you busy and you won’t need to worry about getting bored no matter where you are. While there are a number of games that you can […]
Posted on 7 March 2019 | 5:34 pm
Researchers have developed a new imaging method that can capture images at speeds of up to 1.5 million frames per second using standard imaging sensors typically limited to 100 frames per second. This new technology will make it possible to capture extremely fast events for applications such as biomedical research or slow-motion scenes in a film.
Posted on 7 March 2019 | 3:50 pm
A team of researchers from the University of St Andrews has achieved a breakthrough in the measurement of lasers which could revolutionise the future of fiber-optic communications.
Posted on 7 March 2019 | 1:38 pm
Digital holographic microscopy is an imaging modality that can digitally reconstruct the images of 3-D samples from a single hologram by digitally refocusing it through the entire 3-D sample volume. In comparison, scanning through a sample volume with a conventional light microscope requires using a mechanical stage to shift the sample and taking multiple images at various depths, which sets a constraint on the achievable imaging speed and throughput. Moreover, holographic imaging can be performed at a fraction of the size and cost of a conventional bright-field microscope, also covering a much larger field of view. This has enabled a myriad of hand-held devices powered by holography for bio-medical diagnostics and environmental sensing applications. Despite these advantages, the resulting images of a holographic microscope in general suffer from light interference related spatial artifacts, which can limit the achievable contrast in the reconstructed hologram.
Posted on 7 March 2019 | 11:39 am
Many types of cancer could be more easily treated if they were detected at an earlier stage. MIT researchers have now developed an imaging system, named "DOLPHIN," which could enable them to find tiny tumors, as small as a couple of hundred cells, deep within the body.
Posted on 7 March 2019 | 9:31 am
All types of people are following different types of work schedules. It does not matter which kind of work you are doing, the intense work is always lead to back pain. If you are facing high pain in the back, then you should check out joe o’toole reviews. The reviews can help you in getting […]
Posted on 6 March 2019 | 7:06 pm
Health is the real wealth of a person and it is very crucial to ensure a healthy life. With the problems arising due to junk and fast food, people are very prone to overweight, obesity and health issues. There are many risks for people who suffer from overweight. It increases the chances of many health-related […]
Posted on 6 March 2019 | 7:48 am