Photonics and LED Lighting News

Researchers determine absolute duration of photoelectric effect for the first time

The photoelectric effect provides the basis for solar energy and global communications; Albert Einstein described it over a century ago. For the first time, scientists from the Technical University of Munich (TUM), the Max-Planck Institute of Quantum Optics (MPQ), and the TU Wien have now measured the absolute duration of the light absorption and of the resulting photoelectron released from a solid body.

Posted on 20 September 2018 | 12:30 pm

Fiber optic sensor measures tiny magnetic fields

Researchers have developed a light-based technique for measuring very weak magnetic fields, such as those produced when neurons fire in the brain. The inexpensive and compact sensors could offer an alternative to the magnetic resonance imaging (MRI) systems currently used to map brain activity without the expensive cooling or electromagnetic shielding required by MRI machines.

Posted on 19 September 2018 | 3:55 pm

Researchers push the boundaries of optical microscopy

The field of optical microscopy research has developed rapidly in recent years. Thanks to the invention of a technique called super-resolution fluorescence microscopy, it has recently become possible to view even the smaller parts of a living cell. Now, by making a smart refinement to that technique, researchers at TU Delft have pushed its boundaries even further. Where previously objects measuring up to 10-20 nanometres could be observed, their method makes it possible to focus on structures of as tiny as 3 nanometres across.

Posted on 19 September 2018 | 1:34 pm

Extremely small and fast: Laser ignites hot plasma

When light pulses from an extremely powerful laser system are fired onto material samples, the electric field of the light rips the electrons off the atomic nuclei. For fractions of a second, a plasma is created. The electrons couple with the laser light in the process, thereby reaching nearly the speed of light. When flying out of the material sample, they pull the atomic cores (ions) behind them. In order to investigate this complex acceleration process experimentally, researchers from the German research center Helmholtz-Zentrum Dresden-Rossendorf (HZDR) have developed a novel type of diagnostics for innovative laser-based particle accelerators. Their results are now published in the journal Physical Review X.

Posted on 19 September 2018 | 11:21 am

New chip-sized device could help manufacturers measure laser power in real time

Lasers play roles in many manufacturing processes, from welding car parts to crafting engine components with 3D printers. To control these tasks, manufacturers must ensure that their lasers fire at the correct power. 

Posted on 18 September 2018 | 12:40 pm

New understanding of light allows researchers to see around corners

Covert sensing of objects around a corner may soon become a reality.

Posted on 17 September 2018 | 6:24 pm

Compact fiber laser may enable wearable tech and better endoscopes

By creating a new twist on fiber optic sensors, researchers in China have developed a smart, flexible photoacoustic imaging technique that may have potential applications in wearable devices, instrumentation and medical diagnostics.

Posted on 17 September 2018 | 6:20 pm

Try Out The Greatest Dating App Today

There are a number of reasons why it is important for you to give a dating or chat app a try. Although some people try to stay away from these applications because they believe that it is only for casual relationships and nothing serious comes out of it, there are a number of apps that ...

Posted on 15 September 2018 | 8:42 am

Near-infrared laser systems for monitoring forest dynamics from space pass final tests

All systems are go for launch in November of NASA's Global Ecosystem Dynamics Investigation (GEDI) mission, which will use high-resolution laser ranging to study Earth's forests and topography from the International Space Station (ISS).

Posted on 15 September 2018 | 8:17 am

Don’t Forget To Invest In Cryptocurrency

There are many people that choose to use cryptocurrency on a regular basis and if you haven’t been able to choose this currency yet or you haven’t been able to understand a lot about it then it’s time for you to research a little more about how cryptocurrency works and in what way it will ...

Posted on 14 September 2018 | 5:02 pm

'Optical rocket' created with intense laser light

In a recent experiment at the University of Nebraska–Lincoln, plasma electrons in the paths of intense laser light pulses were almost instantly accelerated close to the speed of light.

Posted on 14 September 2018 | 2:07 pm

Applying metamaterials to quantum optics paves the way for new interdisciplinary studies

Two teams of scientists from the Technion-Israel Institute of Technology have collaborated to conduct groundbreaking research leading to the development of a new and innovative scientific field: Quantum Metamaterials. The findings are presented in a new joint paper published in the journal Science.

Posted on 14 September 2018 | 10:53 am

Tiny camera lens may help link quantum computers to network

An international team of researchers led by The Australian National University (ANU) has invented a tiny camera lens, which may lead to a device that links quantum computers to an optical fibre network.

Posted on 13 September 2018 | 6:00 pm

Laser sintering optimized for printed electronics

Printed electronics use standard printing techniques to manufacture electronic devices on different substrates like glass, plastic films, and paper. Interest in this area is growing because of the potential to create cheaper circuits more efficiently than conventional methods. A new study by researchers at Soonchunhyang University in South Korea, published in AIP Advances, provides insights into the processing of copper nanoparticle ink with green laser light.

Posted on 13 September 2018 | 3:42 pm

Enhanced 3-D imaging poised to advance treatments for brain diseases

Researchers have developed a combination of commercially available hardware and open-source software, named PySight, which improves rapid 2-D and 3-D imaging of the brain and other tissues. By seamlessly enabling integration of the fastest 3-D imaging solution available today, the advance in microscopy could help scientists to better understand brain dynamics and discover new treatments for health problems such as stroke, epilepsy and dementia.

Posted on 13 September 2018 | 2:00 pm

You Will Find Your Partner In No Time

At the beginning of your relationship through a dating app, you and your partner both may have taken efforts to indulge in what the other thought was fun. However, if your list of fun and your partner’s list of fun are completely different now and neither of you make an effort to do what the ...

Posted on 13 September 2018 | 9:52 am

Treat This Tan With Ease

If you suffer from skin conditions or skin problems then you need to understand that it is important for you to get the right treatment so that you are able to treat and keep the skin condition under control. Tan is a common problem that occurs in many people and in case you are suffering ...

Posted on 13 September 2018 | 9:01 am

Finding A Date Is Now Very Easy

Over a period of time relationships become comfort relationships where you just let yourself go. If your ex partner had fallen in love with your witty sense of humour through a dating app, your capacity to hold an intellectual discussion or debate and so on, reignite those old qualities of yours. Be the person that ...

Posted on 13 September 2018 | 6:14 am

Researchers optically trap, move and analyze living cells with laser/microscope combo

A new instrument lets researchers use multiple laser beams and a microscope to trap and move cells and then analyze them in real-time with a sensitive analysis technique known as Raman spectroscopy. The instrument could allow scientists to learn more about how infections take hold or the formation of antibiotic-resistant bacterial biofilms.

Posted on 12 September 2018 | 6:22 pm

Pristine quantum light source created at the edge of silicon chip

The smallest amount of light you can have is one photon, so dim that it's pretty much invisible to humans. While imperceptible, these tiny blips of energy are useful for carrying quantum information around. Ideally, every quantum courier would be the same, but there isn't a straightforward way to produce a stream of identical photons. This is particularly challenging when individual photons come from fabricated chips.

Posted on 11 September 2018 | 12:50 pm

First use of microscopic sound waves to study cell abnormalities

A University of Nottingham academic has won a prestigious five-year fellowship to explore the use of harmless sound waves to view deep inside living cells to aid early diagnose in diseases such as cancer.

Posted on 11 September 2018 | 12:30 pm

Holography, light-field technology combo could deliver practical 3-D displays

While most interaction with digital content is still constrained to keyboards and 2-D touch panels, augmented and virtually reality (AR/VR) technologies promise ever more freedom from these limitations.

Posted on 7 September 2018 | 5:46 pm

Experiment obtains entanglement of six light waves with a single laser

Austrian physicist Erwin Schrödinger (1887-1961), one of the giants of contemporary science, considered entanglement the most interesting property in quantum mechanics. In his view, it was this phenomenon that truly distinguished the quantum world from the classical world. Entanglement occurs when groups of particles or waves are created or interact in such a way that the quantum state of each particle or wave cannot be described independently of the others, however far apart they are. Experiments performed at the University of São Paulo's Physics Institute (IF-USP) in Brazil have succeeded in entangling six light waves generated by a simple laser light source known as an optical parametric oscillator.

Posted on 7 September 2018 | 12:35 pm

Tuning terahertz beams with nanoparticles

For years, scientists have dismissed terahertz radiation. Why? There were few ways to control this line-of-sight, nonionizing radiation. However, they saw its potential. For example, it could be used for short-range, high-bandwidth communications for tiny medical and environmental sensors. Now, researchers have developed a way to magnetically control terahertz beams using specially designed nanoparticles. By controlling the strength and direction of the applied magnetic field, the nanoparticles dynamically tuned a terahertz beam's phase and amplitude.

Posted on 6 September 2018 | 1:55 pm

Fish-eye lens may entangle pairs of atoms

Nearly 150 years ago, the physicist James Maxwell proposed that a circular lens that is thickest at its center, and that gradually thins out at its edges, should exhibit some fascinating optical behavior. Namely, when light is shone through such a lens, it should travel around in perfect circles, creating highly unusual, curved paths of light.

Posted on 6 September 2018 | 1:30 pm

Physicists produce extremely short and specifically shaped electron pulses for materials studies

Matter is made up of atoms and electrons. Although seeing atoms is now possible, for example with modern electron microscopes, tracking atomic movements requires ultrashort measurement periods in the femtosecond and attosecond range, as well. Such extremely fast "camera shutter speeds" can be reached through ultrashort electron pulses, which are shorter than the time scale of the motion. The shorter the pulse, the higher the resolution. Equally important for experiments, however, is a special shaping of the electron pulses in space and time, adjusted to the properties of the substance in question.

Posted on 4 September 2018 | 3:08 pm

Boosting gravitational wave detectors with quantum tricks

A group of scientists from the Niels Bohr Institute (NBI) at the University of Copenhagen will soon start developing a new line of technical equipment in order to dramatically improve gravitational wave detectors.

Posted on 4 September 2018 | 2:15 pm

Human eye capable of seeing 'ghosted' images

A team of researchers in the U.K. has found that the human eye and brain are together capable of seeing "ghosted" images. The researchers have published a paper describing their work on the arXiv preprint server.

Posted on 4 September 2018 | 12:30 pm

Terahertz spectroscopy enters the single-molecule regime

The interaction of light with matter is the basis of spectroscopy, a set of techniques lying at the heart of physics and chemistry. From infrared light to X-rays, a broad sweep of wavelengths is used to stimulate vibrations, electron transitions, and other processes, thus probing the world of atoms and molecules.

Posted on 4 September 2018 | 10:49 am

Difference between the types of vacuum cleaners

Vacuum cleaners are the necessary thing for the domestic purpose, and it is the good home appliance for cleaning the house. There are varieties of gadgets available in the market to clean the home. You can pick any of the best vacuums in 2018 to make your job easy. No one has enough time to ...

Posted on 31 August 2018 | 10:39 am

Research could lead to security scanners capable of detecting explosives

Using a single pixel camera and Terahertz electromagnetic waves, a team of Physicists at the University of Sussex have devised a blueprint which could lead to the development of airport scanners capable of detecting explosives.

Posted on 30 August 2018 | 2:46 pm

Boron nitride separation process could facilitate higher efficiency solar cells

A team of semiconductor researchers based in France has used a boron nitride separation layer to grow indium gallium nitride (InGaN) solar cells that were then lifted off their original sapphire substrate and placed onto a glass substrate.

Posted on 30 August 2018 | 2:12 pm

Sparkling Clean Home By Cleaning Services In San Diego

If your house has tons of mess and you cannot clean it up by yourself, you should definitely hire the best cleaning services in San Diego. Reliable and professional cleaning services have all what it takes to clean any messy house, thus giving you the assurance of having best results after they work. What do ...

Posted on 30 August 2018 | 12:00 am

Light programmable guidance of direct current fields in Laplacian metadevices

To enable negative refraction and related optical illusions, metamaterials are artificially engineered with unique properties that result from their internal physical structures, rather than their chemical composition. The concept is credited to an experiment conducted by the Soviet scientist Victor Veselago in 1968 to show that negatively refracting materials (as opposed to the typically observed positive refractive index) to create a negative index 'superlens' could be achieved when both electric permittivity (ε) and magnetic permeability (µ) of a material were negative. Thirty-three years after the conceptual proposal, the pioneering work of physicist John Pendry enabled the development of metamaterials as Veselago imagined—a composite material with negative refractive index providing greatly improved resolution.

Posted on 29 August 2018 | 1:40 pm

Get The Best Pool Today

There are a number of people who have a lot of space in their backyard but they do not manage to construct an in ground pool in the backyard mainly because of the amount of money that is involved in this construction. If you have a lot of space in your backyard but you are ...

Posted on 29 August 2018 | 11:28 am

Vacuum cleaning- tips for cleaning

There are many sources which come to clean the house and the other things also. Vacuum cleaners are one among them. It is a famous question among people about the tips for cleaning by the vacuum cleaners. In the post, we will break out the tips of cleaning by the vacuum cleaner. For more information, ...

Posted on 29 August 2018 | 10:50 am

Researchers developing novel biomedical imaging system

Purdue University researchers are developing a novel biomedical imaging system that combines optical and ultrasound technology to improve diagnosis of life-threatening diseases.

Posted on 28 August 2018 | 5:58 pm

New compact hyperspectral system captures 5-D images

Researchers have developed a compact imaging system that can measure the shape and light-reflection properties of objects with high speed and accuracy. This 5D hyperspectral imaging system—so-called because it captures multiple wavelengths of light plus spatial coordinates as a function of time —could benefit a variety of applications including optical-based sorting of products and identifying people in secure areas of airports. With further miniaturization, the imager could enable smartphone-based inspection of fruit ripeness, or personal medical monitoring.

Posted on 28 August 2018 | 3:36 pm

First published results from new X-ray laser

With the publication of the first experimental measurements performed at the facility, the European X-ray Free-Electron Laser (EuXFEL) has passed another critical milestone since its launch in September 2017. It is the first of a "next generation" of XFELs that offer much more rapid data collection than was possible before. As the EuXFEL delivers X-ray pulses at the almost unbelievable rate of one million pulses per second, experimental measurements can be completed more quickly, allowing more experiments to be carried out per year. It was not obvious however, that current measurement techniques would be able to handle this deluge of X-ray pulses. Researchers at the Max Planck Institute for Medical Research in Heidelberg and from Rutgers University in Newark, USA, working with an international team of collaborators and scientists from DESY and the EuXFEL, have now demonstrated that not only can this be done, but also that high quality structural information on biological molecules is obtained. This is a breakthrough for the facility and for structural biologists using XFELs worldwide.

Posted on 28 August 2018 | 2:59 pm

Patch Clothes That Look Classy

There are a number of people who love to wear bright clothes that are stylish and classy, then patch clothing is something that will suit your style. While there are various places that you will find these clothes, if you are a fan of patch clothing then you must check out UltraPatches because this is ...

Posted on 28 August 2018 | 10:18 am