Interactions between light and matter are a fundamental unit of modern physics, but recently researchers have started to look beyond the standard textbook interactions.
Posted on 22 August 2017 | 10:18 am
Researchers at The Hong Kong University of Science and Technology (HKUST) have developed a new generation of microscope, which not only could capture 3D live cell videos, but the resulted images are also of much higher quality, greatly enhancing the accuracy and the scope of research on cell biology.
Posted on 21 August 2017 | 12:00 pm
Using four low-cost smartphone cameras and some simple colored backlighting, KAUST researchers have dispensed with expensive research-grade camera equipment and dangerous lasers to construct a tomographic particle image velocimetry (PIV) system that is capable of quantitative flow visualization. The proof-of-concept study demonstrates the research power of everyday devices, and puts a state-of-the-art tool within easy reach of a broader group of researchers and educators.
Posted on 21 August 2017 | 11:52 am
Researchers at Tokai University describe in Advanced Materials how wrapping biological tissue in a nanosheet of a particular organic material results in high-quality microscopy images. Application of the wrap prevents the sample from drying out, and hence from shrinking, enabling larger image-recording times.
Posted on 21 August 2017 | 11:10 am
A new approach to optical imaging makes it possible to quickly and economically monitor multiple molecular interactions in a large area of living tissue—such as an organ or a small animal; technology that could have applications in medical diagnosis, guided surgery, or pre-clinical drug testing. The method, which is detailed in Nature Photonics, is capable of simultaneously tracking 16 colors of spatially linked information over an area spanning several centimeters, and can capture interactions that occur in mere billionths of a second.
Posted on 18 August 2017 | 9:52 pm
Chemists at ITbM, Nagoya University have developed a super-photostable fluorescent dye called PhoxBright 430 (PB430) to visualize cellular ultra-structure by super-resolution microscopy. The exceptional photostability of this new dye enables continuous STED imaging. With its ability to tag proteins with fluorescent labels, PB430 demonstrates its use in the 3-D construction and multicolor imaging of biological structures.
Posted on 18 August 2017 | 10:51 am
Researchers have developed a new terahertz imaging approach that, for the first time, can acquire micron-scale resolution images while retaining computational approaches designed to speed up image acquisition. This combination could allow terahertz imaging to be useful for detecting early-stage skin cancer without requiring a tissue biopsy from the patient.
Posted on 17 August 2017 | 2:00 pm
X-rays make the invisible visible: they permit the way materials are structured to be determined all the way down to the level of individual atoms. In the 1950s it was x-rays which revealed the double-helix structure of DNA. With new x-ray sources, such as the XFEL free-electron laser in Hamburg, it is even possible to "film" chemical reactions. The results obtained from studies using these new x-ray sources may be about to become even more precise. A team around Kilian Heeg from the Max Planck Institute for Nuclear Physics in Heidelberg has now found a way to make the spectrum of the x-ray pulses emitted by these sources even narrower. In contrast to standard lasers, which generate light of a single colour and wavelength, x-ray sources generally produce pulses with a broad spectrum of different wavelengths. Sharper pulses could soon drive applications that were previously not feasible. This includes testing physical constants and measuring lengths and times even more precisely than can be achieved at present.
Posted on 17 August 2017 | 12:29 pm
Scientists at the Department of Energy's SLAC National Accelerator Laboratory recently upgraded a powerful optical laser system used to create shockwaves that generate high-pressure conditions like those found within planetary interiors. The laser system now delivers three times more energy for experiments with SLAC's ultrabright X-ray laser, providing a more powerful tool for probing extreme states of matter in our universe.
Posted on 17 August 2017 | 11:00 am
Researchers are on the lookout for rapid, reliable and affordable switches for the opto-electronics of the future. An Empa team now presents a potential solution: dye droplets measuring just a few sub-micrometers in diameter.
Posted on 16 August 2017 | 12:40 pm
Conventional particle accelerators can range from large room-sized devices to facilities multiple kilometers across. One of the ways that scientists have looked to reduce the size and expense of future accelerators is by developing laser -driven plasma acceleration. Such accelerators, however, are growing in size and complexity in order to maintain relevance for one of their applications—high energy physics. However, there are many applications that can use a lower energy and higher repetition rate accelerated beam. For the first time, scientists have observed the production of relativistic electrons driven by low-energy, ultrashort mid-infrared laser pulses. A research team at the University of Maryland, USA, with support from the Technical University of Vienna, Austria, will present their group's findings at Frontiers in Optics + Laser Science APS/DLS (FIO + LS), held 17-21 September 2017 in Washington, DC.
Posted on 15 August 2017 | 3:27 pm
(Phys.org)—Brain-machine interfaces (BMIs) are basically gimmicks. The reason you don't hear so much about them these days is because, in the fullness of time, significant tangible benefit to a user has flat out failed to materialize. Simply stated, neither prickly microelectrode arrays, harrowing optogenetic reworks to our physiology, nor tattooing our brains with toxic fluorescents WILL ever give us what we need. On the other hand, if you can watch native spikes bubble unmolested through axon tracts from afar, sans any of the aforementioned hazards, you might be onto something.
Posted on 15 August 2017 | 1:20 pm
Physicists from Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Deutsches Elektronen-Synchrotron (DESY, Hamburg) have developed a method to improve the quality of X-ray images over conventional methods. The technique, incoherent diffractive imaging (IDI), could image individual atoms in nanocrystals or molecules faster and with a much higher resolution.
Posted on 15 August 2017 | 9:19 am
Scientists from ITMO University and Tampere University of Technology have improved computational imaging of optical signals in lensless microscopes. By employing special algorithms, they increased the resolution of obtained images without any changes in the technical characteristics of microscopes.
Posted on 15 August 2017 | 9:19 am
No single microscope can image all aspects of a sample at the same time and so the use of two or more imaging methods to study a sample - correlative imaging - is common-place.
Posted on 14 August 2017 | 2:10 pm
In a recent paper in Light: Science & Applications, University of Rochester researchers Jannick Rolland and Jacob Reimers describe an optical device with potential applications ranging from improved satellite and diagnostic imagery to more precisely matching the paint color on a living room wall.
Posted on 14 August 2017 | 11:10 am
A new system developed by UCLA researchers could make it easier and less expensive to diagnose chronic diseases, particularly in remote areas without expensive lab equipment.
Posted on 14 August 2017 | 8:22 am
It's long been thought that two's company and three's a crowd. But electrical and systems engineers at Washington University in St. Louis and their collaborators have shown that the addition of a third nanoscatterer, complementing two "tuning" nanoscatterers, to a photonics resonator makes for a fascinating physics party.
Posted on 10 August 2017 | 2:08 pm
Standard light-emitting diodes (LEDs) used for home lighting can now transmit data more rapidly between electronic devices, thanks to new research from A*STAR.
Posted on 10 August 2017 | 1:17 pm
(Phys.org)—Two independent teams working on research aimed at improving optical sensing have used techniques that involve coupling two or more modes of light such that their modes and their corresponding frequencies coalesce, resulting in more sensitivity. In the first effort, a team from Washington University in St. Lois and Otto-von-Guericke University Magdeburg, in Germany, connected three traditional sensors for more precise tuning. In the second effort, a team from the University of Central Florida and Michigan Technological University used just one resonator but coupled light traveling in both directions around it. Both teams have published papers describing their efforts and results in the journal Nature. Mikael Rechtsman with the Pennsylvania State University offers a News & Views piece outlining optical sensing techniques and the work done by the two teams in the same journal issue.
Posted on 10 August 2017 | 1:11 pm
The image is on a canvas as wide as a human hair, its colours never fade, and they can be edited and erased on demand.
Posted on 10 August 2017 | 11:25 am
Multiplexing, the ability to send multiple signals through a single channel, is a fundamental feature of any voice or data communication system. An international research team has demonstrated for the first time a method for multiplexing data carried on terahertz waves, high-frequency radiation that may enable the next generation of ultra-high bandwidth wireless networks.
Posted on 10 August 2017 | 9:00 am
Researchers have demonstrated, for the first time, that an optical analysis method can reveal weak areas in ceramic thermal barrier coatings that protect jet engine turbines from high temperatures and wear. The technique could be used to predict how long coatings would last on an airplane and might eventually lead to new thermal barrier coatings, making engines more efficient and cutting both the cost and pollution of air travel.
Posted on 9 August 2017 | 5:55 pm
Terahertz radiation—the band of the electromagnetic spectrum between microwaves and visible light—has promising applications in medical and industrial imaging and chemical detection, among other uses.
Posted on 8 August 2017 | 6:51 pm
A visit to the optometrist often involves optical coherence tomography. This imaging process uses infrared radiation to penetrate the layers of the retina and examine it more closely in three dimensions without having to touch the eye at all. This allows eye specialists to diagnose diseases such as glaucoma without any physical intervention. However, this method would have even greater potential for science if a shorter radiation wavelength were used, thus allowing a higher resolution of the image. Physicists at Friedrich Schiller University Jena (Germany) have now achieved just that and they have reported their research findings in the latest issue of the specialist journal Optica.
Posted on 8 August 2017 | 9:40 am
Energy loss due to scattering from material defects is known to set limits on the performance of nearly all technologies that we employ for communications, timing, and navigation. In micro-mechanical gyroscopes and accelerometers, such as those commonly found in cellphones today, microstructural disorder impacts measurement drift and overall accuracy of the sensor, analogous to how a dirty violin string might impact one's enjoyment of beautiful music. In optical fiber communication systems, scattering from material defects can reduce data fidelity over long distances thereby reducing achievable bandwidth. Since defect-free materials cannot be obtained, how can we possibly improve on the fundamental technological limits imposed by disorder?
Posted on 7 August 2017 | 9:02 pm
Two research teams have made structures that could help conceal objects from daylight – taking the next step towards making the visible, invisible. Recent progress draws on advances in so-called metamaterials, which are microscopic structures that bend light in unnatural directions.
Posted on 7 August 2017 | 4:50 pm
A research team at the University of Central Florida has demonstrated the fastest light pulse ever developed, a 53-attosecond X-ray flash.
Posted on 7 August 2017 | 4:19 pm
In materials research, chemistry, biology, and medicine, chemical bonds, and especially their dynamic behavior, determine the properties of a system. These can be examined very closely using terahertz radiation and short pulses. KIT's FLUTE accelerator will be used for the development of new accelerator technologies for compact and powerful terahertz sources that are supposed to serve as efficient research and application tools.
Posted on 7 August 2017 | 1:20 pm
Engineers at Stanford University and the University of California San Diego have developed a camera that generates four-dimensional images and can capture 138 degrees of information. The new camera—the first-ever single-lens, wide field of view, light field camera—could generate information-rich images and video frames that will enable robots to better navigate the world and understand certain aspects of their environment, such as object distance and surface texture.
Posted on 7 August 2017 | 10:30 am
LED screens are now very common as business carrier in cities. And the LED display in Mall Taman Anggrek Jakarta, Indonesia is the largest in the world by now. [Read more...]
Posted on 13 May 2015 | 10:09 am
Sanan Optoelectronics Co., Ltd disclosured its first quarter report in 21th evening April, that the company achieved revenues of 927 million yuan (about US$ 149.58 million dollar), an increase of 12.65% as the same period of last year's 823 million yuan (about US$ 132.80 million dollar). [Read more...]
Posted on 22 April 2015 | 3:36 am
American Lighting manufacturers Global Lighting Technologies (GLT) has developed ultra-thin LED panel light which adopts light guiding panel. The size of the lighting panel is 4 inches (about 10cm), thickness is 3.5mm, and the luminous efficiency is 115lm/W,which is in high level among the light guiding panel. [Read more...]
Posted on 18 April 2015 | 9:38 am
In Warsaw Poland, to enhance people's awareness of environmental protection, Luzinterruptus held a 12-hour charity called Recycling Sunday by using plastic bags, the activity brought thousands of luminous plastic bags which scattered in the square. [Read more...]
Posted on 17 April 2015 | 7:14 am
Samsung Display split the LCD panel and OLED business into two divisions again, it seems that Samsung want to assign professionals for the two departments, and boost marketing capabilities, the market rumors that Samsung intends to rebuild its OLED TV business. [Read more...]
Posted on 6 April 2015 | 10:00 am
Recently, Philips revealed its intelligent lighting "Hue" series will add a new member - "Hue Go". This new product with bowl shapes, but it not only a bowl, same with the previous Hue series, it can be connected to the phone associated with the APP. [Read more...]
Posted on 5 April 2015 | 8:07 am
Philips officially announced on 31st March that 80.1% of the Lumileds shares have been acquired by GO Scale Capital, Philips will retain the remaining 19.9% stake. GO Scale Capital is a new investment fund sponsored by GSR Ventures and Oak Investment Partners. The consortium partners are Asia Pacific Resource Development, Nanchang Industrial Group and GSR Capital. [Read more...]
Posted on 2 April 2015 | 8:19 am
The United States, Canada and Australia always provide comfortable environment for Children's Hospitals, and the Oklahoma hospital installed a kite LED lamps to provide cozy lighting for little patient. [Read more...]
Posted on 27 March 2015 | 10:26 am
Recently, Samsung intends to merge LED production lines "Line 3" and "SR line" together to "Line 5" which is located in Gyeonggi-do. Line 5 was originally responsible for production of Samsung's semiconductor products, but the company decides to convert it to LED chip production line, it mainly produces 4-inch and 8-inch products. [Read more...]
Posted on 18 March 2015 | 9:21 am
P Narayana, the Minister of Municipal Administration Department said at the LED manufacturing National Conference that "Chief Minister N Chandrababu Naidu set a goal to install energy-efficient LED lighting systems in 110 streets and private companies at the end of June." [Read more...]
Posted on 13 March 2015 | 3:56 am