Novel lenses enable X-ray microscopy with record resolution

07.12. 2017 Optics & Photonics News - Optics, Photonics, Physics News

Scientists at DESY have developed novel lenses that enable X-ray microscopy with record resolution in the nanometre regime. Using new materials, the research team led by DESY scientist Sasa Bajt from the Center for Free-Electron Laser Science (CFEL) has perfected the design of specialised X-ray optics and achieved a focus spot size with a diameter of less than ten nanometres. A nanometre is a millionths of a millimetre and is smaller than most virus particles. The researchers report their work in the journal Light: Science and Applications. They successfully used their lenses to image samples of marine plankton.

Innovative system images photosynthesis to provide picture of plant health

07.12. 2017 Optics & Photonics News - Optics, Photonics, Physics News

Researchers have developed a new imaging system that is designed to monitor the health of crops in the field or greenhouse. The new technology could one day save farmers significant money and time by enabling intelligent agricultural equipment that automatically provides plants with water or nutrients at the first signs of distress. With further development, the system has the potential to be used aboard unmanned aerial vehicles to remotely monitor crops.

Seeing through walls of unknown materials

07.12. 2017 Optics & Photonics News - Optics, Photonics, Physics News

Researchers at Duke University have devised a way to see through walls using a narrow band of microwave frequencies without any advance knowledge of what the walls are made out of. Besides having obvious applications in the realm of security, the approach could lead to inexpensive devices to help construction workers easily locate conduits, pipes and wires.

Microscope using UV instead of visible light emerging as diagnostic tool

05.12. 2017 Optics & Photonics News - Optics, Photonics, Physics News

MUSE image of sebaceous glandA microscope using ultraviolet light to illuminate samples enables pathologists to assess high-resolution images of biopsies and other fresh tissue samples for disease within minutes, without requiring the time-consuming preparation of conventional slides or destroying the tissue.

Ultrasound imaging needle to transform heart surgery

01.12. 2017 Optics & Photonics News - Optics, Photonics, Physics News

Heart tissue can be imaged in real-time during keyhole procedures using a new optical ultrasound needle developed by researchers at UCL and Queen Mary University of London (QMUL).

Squeezing light into a tiny channel brings optical computing a step closer

30.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

By forcing light to go through a smaller gap than ever before, researchers have paved the way for computers based on light instead of electronics.

A space-time sensor for light-matter interactions

30.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.

Scientists develop a new sensor for future missions to the moon and Mars

30.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

A team of scientists from the Faculty of Physics of Lomonosov Moscow State University and their colleagues developed a compact spectral polarimeter for carrying out mineralogical investigations on the surfaces of astronomical bodies. The description of the device and the results of prototype testing were published in Optics Express.

Scientists make transparent materials absorb light

30.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

A group of physicists from Russia, Sweden and the U.S. has demonstrated a highly unusual optical effect. They managed to "virtually" absorb light using a material that has no light-absorbing capacity. The research findings, published in Optica, break new ground for the creation of memory elements for light.

Thinner photodiode with higher stability and performance

30.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

A research team of at DGIST has unveiled a new high-performance photodiode that reduces thickness to one-sixth of conventional silicon photodiodes. According to the researchers, they worked to develop a technology to increase the stability and performance of photodiodes using cubic perovskite nanocrystals. Applying this technology to future photodiodes will contribute to the fields that require high accumulation and resolution.

Innovative microscope poised to propel optogenetics studies

29.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

A newly developed microscope is providing scientists with a greatly enhanced tool to study how neurological disorders such as epilepsy and Alzheimer's disease affect neuron communication. The microscope is optimized to perform studies using optogenetic techniques, a relatively new technology that uses light to control and image neurons genetically modified with light-sensitive proteins.

Microwave-based test method can help keep 3-D chip designers’ eyes open

28.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

Researchers at the National Institute of Standards and Technology (NIST) have invented a new approach to testing multilayered, three-dimensional computer chips that are now appearing in some of the latest consumer devices. The new method may be the answer the semiconductor industry needs to quickly assess the reliability of this relatively new chip construction model, which stacks layers of flat circuitry atop one another like floors in a building to help make chips ever-faster and packed with features.

DIY: Scientists release a how-to for building a smartphone microscope

28.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

Add one more thing to the list of tasks your smartphone can perform. University of Houston researchers have released an open-source dataset offering instructions to people interested in building their own smartphone microscope.

Ultrathin and flat graphene metalenses gain more properties

27.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

On the quest for miniaturization, scientists at the Center for Integrated Nanostructure Physics, within the Institute for Basic Science (IBS, South Korea), in collaboration with researchers from the University of Birmingham and the Korea Advanced Institute of Science and Technology (KAIST), develop credit card-thick, flat lenses with tunable features. These optical devices, made of graphene and a punctured gold surface, could become optical components for advanced applications, such as amplitude tunable lenses, lasers (i.e. vortex phase plates), and dynamic holography.

Imaging technique unlocks the secrets of 17th century artists

21.11. 2017 Optics & Photonics News - Optics, Photonics, Physics News

The secrets of 17th century artists can now be revealed, thanks to 21st century signal processing. Using modern high-speed scanners and the advanced signal processing techniques, researchers at the Georgia Institute of Technology are peering through layers of pigment to see how painters prepared their canvasses, applied undercoats, and built up layer upon layer of paint to produce their masterpieces.