Researchers have shown that it is possible to train artificial neural networks directly on an optical chip. The significant breakthrough demonstrates that an optical circuit can perform a critical function of an electronics-based artificial neural network and could lead to less expensive, faster and more energy efficient ways to perform complex tasks such as speech or image recognition.
Posted on 19 July 2018 | 2:30 pm
A newly developed analysis method can detect hydroxyl radicals (OH) with unprecedented sensitivity. Because OH is a critical component in the combustion processes that power most vehicles, the new approach could advance the development of novel types of engines and fuels that would be more efficient and environmentally friendly.
Posted on 19 July 2018 | 11:23 am
Electron microscopy has allowed scientists to see individual atoms, but even at that resolution not everything is clear.
Posted on 19 July 2018 | 9:40 am
Researchers from the University of North Carolina at Chapel Hill have reached a new milestone on the way to optical computing, or the use of light instead of electricity for computing. They explored a new way to select and send light of a specific color using long silicon wires that are several hundred nanometers in diameter (about 1,000 times smaller than a human hair) and their work enabled a new type of nanoscale "light switch" that can turn on and off the transmission of one color of light over very long distances.
Posted on 17 July 2018 | 4:13 pm
The interaction of traveling waves in dissipative systems, physical systems driven by energy dissipation, can yield unexpected and sometimes chaotic results. These waves, known as dissipative pulses (DSs), are driving experimental studies in a variety of areas that involve matter and energy flows.
Posted on 17 July 2018 | 3:00 pm
A plan to incorporate a third bent waveguide into a silicon-based light splitter led A*STAR researchers to develop a device capable of a 30-fold improvement in splitting efficiency. The novel on-chip light splitter marks a major breakthrough in improving high-performance data transmission systems, as well as applications in quantum computing.
Posted on 16 July 2018 | 12:40 pm
Researchers at the Technion-Israel Institute of Technology have constructed a first-of-its-kind optic isolator based on resonance of light waves on a rapidly rotating glass sphere. This is the first photonic device in which light advancing in opposite directions moves at different speeds.
Posted on 13 July 2018 | 11:53 am
There is no denying that people today are dependent on their phone and other gadgets. When something goes wrong with your phone or your laptop it becomes very difficult for you to manage your daily routine because you are almost dependent on your device for every little thing. Whether it means calling up a near ...
Posted on 12 July 2018 | 2:28 pm
If you want to get the greatest benefit from a beam of light—whether to detect a distant planet or remedy an aberration in the human eye—you need to be able to measure its beam front information.
Posted on 11 July 2018 | 7:33 pm
Terahertz radiation can be used for a wide variety of applications and is used today for airport security checks just as much as it is for material analysis in the lab. The wavelength of this radiation is in the millimetre range, meaning that it is significantly larger than the wavelength of visible light. It also requires specialised techniques to manipulate the beams and get them into the right shape. At TU Wien, shaping terahertz beams is now something of a resounding success: with the help of a precisely calculated plastic screen produced on the 3-D printer, terahertz beams can be shaped as desired.
Posted on 11 July 2018 | 1:00 pm
Mobile games have evolved over the years. Pokémon Go which is a recently launched games has already crossed millions of downloads across the world and is the new craze for everyone. Pokemon-go-hack.de is one of the web links which will give you some smart cheat code to help to go faster and further into the ...
Posted on 11 July 2018 | 12:43 pm
All of you have seen and used a printer and a computer. If you ever paid proper attention then you will see that there are a lot of drivers that are needed to use the printer in the right command. It is really very important that the command given by the computer to the printer ...
Posted on 11 July 2018 | 11:40 am
Technology created by researchers at the Okinawa Institute of Science and Technology Graduate University (OIST) is literally shedding light on some of the smallest particles to detect their presence – and it's made from tiny glass bubbles.
Posted on 11 July 2018 | 10:24 am
Based at the National Research Nuclear University MEPhI (Russia), a research team led by Prof. Yuri Rakovich has developed a tunable micro-resonator for hybrid energy states between light and matter using light to control the chemical and biological properties of molecules. The results have been published in the Review of Scientific Instruments.
Posted on 10 July 2018 | 10:15 am
Fluorescence-based biosensing and bioimaging technologies are widely used in research and clinical settings to detect and image various biological species of interest. While fluorescence-based detection and imaging techniques are convenient to use, they suffer from poor sensitivity. For example, when a patient carries low levels of antigens in the blood or urine, the fluorescent signal can be feeble, making visualization and diagnosis difficult. For this reason, fluorescence-based detection is not always preferred when sensitivity is a key requirement.
Posted on 9 July 2018 | 8:18 pm
A KAIST research group presented photonic capsules for injectable laser resonators using microfluidic technology. The capsule's diameter is comparable to a human hair and stable in gas and liquid media, so it is injectable into any target volume. The research group, headed by Professor Shin-Hyun Kim in the Department of Chemical and Biomolecular Engineering, applied an interesting optical property from nature.
Posted on 9 July 2018 | 1:20 pm
Cockroaches can be a menace. They are one of the most irritating pests one can have in their houses and to get rid of them is also always a task. Insect repellent is said to be the best roach killer available in the market. No matter how bad is the cockroach infestation in your house, ...
Posted on 8 July 2018 | 2:13 pm
T-shirts come in various colors, designs and patterns. Family shirts are most wanted these days. These t-shirts can never go out of style. They look unique and fashionable. T-shirts can be worn by everybody irrespective of age, sex and gender. It is the most comfortable wear. It can be worn as casual with shorts and ...
Posted on 8 July 2018 | 1:26 pm
When we get into age adolescent we are actually productive and we have no idea how to take our energy and help the body grow. Doing exercise is the ultimate way to help the body to help the body to get full great things about the adolescent age group. This is actually the age which ...
Posted on 7 July 2018 | 1:22 pm
Nowadays the trend of online dating is increasing at a really great rate. Along with this, there is gay dating app that people can use if they are gay to find their right partner. If you remembered some time ago, there was no respect for gays in the society but as the society is developing ...
Posted on 7 July 2018 | 10:59 am
Researchers from Chalmers University of Technology, Sweden, and Tallinn University of Technology, Estonia, have demonstrated a 4000 kilometre fibre-optical transmission link using ultra low-noise, phase-sensitive optical amplifiers. This is a reach improvement of almost six times what is possible when using conventional optical amplifiers. The results are published in Nature Communications.
Posted on 5 July 2018 | 10:47 am
Ever wondered where parrots get their bright plumage? An Otago-led project may have just solved the mystery.
Posted on 5 July 2018 | 9:10 am
So you have decided to join the blogging bandwagon? Congratulations on completing your initial steps and setting up your blog. Before getting too far ahead of yourself, pause and take a deep breath. There are still a lot of things that can go wrong and we will show you exactly how to avoid them. While ...
Posted on 4 July 2018 | 12:53 pm
While ultrasound is one of the most common medical imaging tools, conventional electronic ultrasound devices tend to be bulky and cannot be used at the same time as some other imaging technologies. A new ultrasound system that uses optical, instead of electronic components, could improve performance while giving doctors significantly more flexibility in how they use ultrasound to diagnose and treat medical problems.
Posted on 2 July 2018 | 5:06 pm
In Norse mythology, the Bifrost was the rainbow bridge linking the realm of the gods to Earth. At UC Santa Barbara, it is also the name of the Broadly-tunable Illumination Facility for Research, Outreach, Scholarship, and Training (BIFROST), a laser facility that will provide coherent light throughout the visible and infrared spectrum to 10 laboratories in the campus's Broida Hall, which houses the Department of Physics.
Posted on 2 July 2018 | 4:33 pm
Electronic circuits are miniaturized to such an extent that quantum mechanical effects become noticeable. Using photoelectron spectrometers, solid-state physicists and material developers can discover more about such electron-based processes. Fraunhofer researchers have helped revolutionize this technology with a new spectrometer that works in the megahertz range.
Posted on 2 July 2018 | 12:25 pm
Nowadays, Gift cards are playing an important role, and you can get great benefits with the help of Gift Cards. There is some Gift Card Rebel that is just as simple as a Gift card generator to use. This is just the same, and you can get to use some free gift cards from many ...
Posted on 2 July 2018 | 10:02 am
Every year, we give out gift to friends and family on numerous occasions from birthdays to Christmas and anytime we feel like they need a bit of cheering up. Of course with the passing years, it has become increasingly difficult to think of a new gift. When all else fail, we highly suggest turning to ...
Posted on 1 July 2018 | 7:06 pm
Researchers and engineers have long sought ways to conceal objects by manipulating how light interacts with them. A new study offers the first demonstration of invisibility cloaking based on the manipulation of the frequency (color) of light waves as they pass through an object, a fundamentally new approach that overcomes critical shortcomings of existing cloaking technologies.
Posted on 28 June 2018 | 3:30 pm
Scientists have discovered a new property of wave propagation that leads to a new way to improve the resolution of virtually all optical technologies, including microscope lenses, telecommunications, laser-based lithography, biological and astronomical imaging. All these systems transmit information and energy through wave propagation. Researchers at the Institute for Basic Science have discovered that if light passes through asymmetric apertures, astigmatism arises and can degrade image resolution. Having identified this previously unsuspected problem, the researchers showed how to remedy it.
Posted on 28 June 2018 | 1:21 pm
A multicolor laser pointer you can use to change the color of the laser with a button click—similar to a multicolor ballpoint pen—is one step closer to reality thanks to a new tiny synthetic material made at Sandia National Laboratories.
Posted on 28 June 2018 | 1:17 pm
Tiny, nano-sized crystals of salt encoded with data using light from a laser could be the next data storage technology of choice, following research by Australian scientists.
Posted on 28 June 2018 | 11:25 am
Just like merry people at a party, photons perform random walks through white paint; but their density remained out of control. Recently, scientists at the University of Twente in the Netherlands have managed to control the photon energy density inside opaque materials such as white paint.
Posted on 28 June 2018 | 11:16 am
Okayama University researchers describe in the journal Optics Express the use of Terahertz (THz) chemical microscopy to measure the pH of water-based solutions with a volume as small as 16 nL. The findings are important to be able to measure pH concentrations in small-volume solutions for clinical and environmental analyses.
Posted on 28 June 2018 | 11:16 am
Speed limits apply not only to traffic. There are limitations on the control of light as well, in optical switches for internet traffic, for example. Physicists at Chalmers University of Technology now understand why it is not possible to increase the speed beyond a certain limit—and know the circumstances in which it is best to opt for a different route.
Posted on 28 June 2018 | 6:43 am
A team headed by the TUM physicists Alexander Holleitner and Reinhard Kienberger has succeeded for the first time in generating ultrashort electric pulses on a chip using metal antennas only a few nanometers in size, then running the signals a few millimeters above the surface and reading them in again a controlled manner. The technology enables the development of new, powerful terahertz components.
Posted on 27 June 2018 | 11:05 am
Researchers have scaled up a powerful fluorescence imaging technique used to study biological processes on the cellular level. Previously limited to samples just millimeters in area, the expanded approach can analyze samples with areas up to 4 square centimeters. With further development the new approach could find use in the clinic as a sensitive and precise method for identifying the edges of tumors during surgery.
Posted on 26 June 2018 | 5:03 pm
In the photoelectric effect, a photon ejects an electron from a material. Researchers at ETH have now used attosecond laser pulses to measure the time evolution of this effect in molecules. From their results they can deduce the exact location of a photoionization event.
Posted on 22 June 2018 | 11:40 am
Modern microscopy has given scientists a front-row seat to living, breathing biology in all its technicolor glory. But access to the best technologies can be spotty.
Posted on 21 June 2018 | 4:22 pm
A new microscope system can image living tissue in real time and in molecular detail, without any chemicals or dyes, report researchers at the University of Illinois.
Posted on 20 June 2018 | 4:14 pm