Squeezing light at the nanoscale—Ultra-confined light could detect harmful molecules

15.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a new technique to squeeze infrared light into ultra-confined spaces, generating an intense, nanoscale antenna that could be used to detect single biomolecules.

Biological light sensor filmed in action

15.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Using X-ray laser technology, a team led by researchers of the Paul Scherrer Institute PSI has recorded one of the fastest processes in biology. In doing so, they produced a molecular movie that reveals how the light sensor retinal is activated in a protein molecule. Such reactions occur in numerous organisms that use the information or energy content of light – they enable certain bacteria to produce energy through photosynthesis, initiate the process of vision in humans and animals, and regulate adaptations to the circadian rhythm. The movie shows for the first time how a protein efficiently controls the reaction of the embedded light sensor. The images, now published in the journal Science, were captured at the free-electron X-ray laser LCLS at Stanford University in California. Further investigations are planned at SwissFEL, the new free-electron X-ray laser at PSI. Besides the scientists from Switzerland, researchers from Japan, the USA, Germany, Israel, and Sweden took part in this study.

Team develops novel micro-embossing equipment for precision optical microstructures

14.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

The Hong Kong Polytechnic University (PolyU) has developed a novel micro-embossing device for manufacturing precision glass lenses with high image quality. The lenses have the resolution required for state-of-the-art optical instruments and devices in varied fields including astronomy, national defence, medical scanning, and consumer products such as cameras and mobile phones. The invention can emboss ultra-precise optical microstructures in glass in an environmentally friendly way, saving electric power by 60 times and reducing manufacturing cost by two-thirds compared to conventional machines.

Researchers report micro-CT scan of a mouse embryo at unprecedented resolution

13.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

One of the most vital research paths in genetics is the relationship between genes and embryonic growth. Noninvasive, whole-body 3-D imaging of embryos is highly important for establishing these relationships in order to determine the impact of specific genes on development. Mice are a widespread research model in genetics, but capturing 3-D imagery of mouse fetal development requires higher resolution and higher throughput than conventional micro computed tomography (micro-CT) can provide.

Researchers report micro-CT scan of a mouse embryo at unprecedented resolution

13.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

One of the most vital research paths in genetics is the relationship between genes and embryonic growth. Noninvasive, whole-body 3-D imaging of embryos is highly important for establishing these relationships in order to determine the impact of specific genes on development. Mice are a widespread research model in genetics, but capturing 3-D imagery of mouse fetal development requires higher resolution and higher throughput than conventional micro computed tomography (micro-CT) can provide.

Breakthrough in cell imaging could have major impact in crime labs

12.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

A Virginia Commonwealth University researcher has developed a procedure for identifying the source of cells present in a forensic biological sample that could change how cell types are identified in samples across numerous industries.

Multiple lasers could be replaced by a single microcomb

12.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Every time we send an e-mail, a tweet, or stream a video, we rely on laser light to transfer digital information over a complex network of optical fibers. Dozens of high-performance lasers are needed to fill up the bandwidth and to squeeze in an increasing amount of digital data. Researchers have now shown that all these lasers can be replaced by a single device called a microcomb.

Fluorescence microscopy gets the BAMM treatment

08.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

A novel technique developed by researchers at the ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) will help shine new light on biological questions by improving the quality and quantity of information that can be extracted in fluorescence microscopy.

New laser makes silicon ‘sing’

07.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Yale scientists have created a new type of silicon laser that uses sounds waves to amplify light. A study about the discovery appears June 8 in the online edition of the journal Science.

A laser that tracks like a hound

07.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

University of Adelaide researchers have created a laser that can "smell" different gases within a sample.

Transparent, conductive films promising for developing flexible screens

07.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Researchers have demonstrated large-scale fabrication of a new type of transparent conductive electrode film based on nanopatterned silver. Smartphone touch screens and flat panel televisions use transparent electrodes to detect touch and to quickly switch the color of each pixel. Because silver is less brittle and more chemically resistant than materials currently used to make these electrodes, the new films could offer a high-performance and long-lasting option for use with flexible screens and electronics. The silver-based films could also enable flexible solar cells for installation on windows, roofs and even personal devices.

Imaging renders decayed texts visible once more

06.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In the Harry Potter series, a tap of the wand and a whispered incantation transforms a blank roll of parchment into detailed map of Hogwarts castle.

Physicists devise method to reveal how light affects materials

05.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Physicists developed a way to determine the electronic properties of thin gold films after they interact with light. Nature Communications published the new method, which adds to the understanding of the fundamental laws that govern the interaction of electrons and light.

Berkeley Lab paves the way for real-time ptychographic data streaming

05.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

What began nearly a decade ago as a Berkeley Lab Laboratory-Directed Research and Development (LDRD) proposal is now a reality, and it is already changing the way scientists run experiments at the Advanced Light Source (ALS)—and, eventually, other light sources across the Department of Energy (DOE) complex—by enabling real-time streaming of ptychographic image data in a production environment.

Physicists catch light in the eye of the storm

04.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Similar to the eye of a hurricane, physicists of research institute AMOLF, the University of Amsterdam and the University of Texas at Austin, have captured light in the eye of an optical vortex. The research will be published on June 4th in the top journal Nature Photonics.