Scientists produce 3-D chemical maps of single bacteria

16.11. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Scientists at the National Synchrotron Light Source II (NSLS-II)—a U.S. Department of Energy (DOE) Office of Science User Facility at DOE's Brookhaven National Laboratory—have used ultrabright x-rays to image single bacteria with higher spatial resolution than ever before. Their work, published in Scientific Reports, demonstrates an X-ray imaging technique, called X-ray fluorescence microscopy (XRF), as an effective approach to produce 3-D images of small biological samples.

Electronic activity previously invisible to electron microscopes revealed

30.10. 2018 Optics & Photonics News - Optics, Photonics, Physics News

The chips that drive everyday electronic gadgets such as personal computers and smartphones are made in semiconductor fabrication plants. These plants employ powerful transmission electron microscopes. While they can see physical structures smaller than a billionth of a meter, these microscopes have no way of seeing the electronic activity that makes the devices function.

Electronic activity previously invisible to electron microscopes revealed

30.10. 2018 Optics & Photonics News - Optics, Photonics, Physics News

The chips that drive everyday electronic gadgets such as personal computers and smartphones are made in semiconductor fabrication plants. These plants employ powerful transmission electron microscopes. While they can see physical structures smaller than a billionth of a meter, these microscopes have no way of seeing the electronic activity that makes the devices function.

Ancient pigment can boost energy efficiency

10.10. 2018 Optics & Photonics News - Optics, Photonics, Physics News

A color developed by Egyptians thousands of years ago has a modern-day application as well – the pigment can boost energy efficiency by cooling rooftops and walls, and could also enable solar generation of electricity via windows.

Nobel-winning physics key to ultra-fast laser research

04.10. 2018 Optics & Photonics News - Optics, Photonics, Physics News

The technique for generating high-intensity, ultra-short optical pulses developed by the 2018 Nobel Prize for Physics winners, Professor Gérard Mourou and Dr. Donna Strickland, provides the basis for important scientific approaches used in Swinburne's research.

Transition metal dichalcogenides could increase computer speed, memory

02.10. 2018 Optics & Photonics News - Optics, Photonics, Physics News

Transition metal dichalcogenides (TMDCs) possess optical properties that could be used to make computers run a million times faster and store information a million times more energy-efficiently, according to a study led by Georgia State University.

Reaction of a quantum fluid to photoexcitation of dissolved particles observed for the first time

02.10. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In his research, Markus Koch, Associate Professor at the Institute of Experimental Physics of Graz University of Technology (TU Graz), concentrates on processes in molecules and clusters which take place on time scales of picoseconds (10-12 seconds) and femtoseconds (10-15 seconds).

Study demonstrates new mechanism for developing electronic devices

26.09. 2018 Optics & Photonics News - Optics, Photonics, Physics News

The prevalence of electronic devices has transformed life in the 21st century. At the heart of these devices is the movement of electrons across materials. Scientists today continue to discover new ways to manipulate and move electrons in a quest for making faster and better functioning devices.

Perovskite semiconductors seeing right through next generation X-ray detectors

21.09. 2018 Optics & Photonics News - Optics, Photonics, Physics News

From observing celestial objects to medical imaging, the sensitive detection of X-rays plays a central role in countless applications. However, the methods used to detect them have undergone an interesting evolution of their own.

Researchers determine absolute duration of photoelectric effect for the first time

20.09. 2018 Optics & Photonics News - Optics, Photonics, Physics News

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.

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.

Antiferromagnetic materials allow for processing at terahertz speeds

25.05. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In high-speed fiber optics, it is often the case that either the bandwidth of the transmission media cannot keep up with the data flow or the data simply cannot be processed fast enough. Then the picture judders or the resolution is temporarily scaled down, and television viewers have to make do with lower resolution images. Soon, such low bandwidth could be a thing of the past. Researchers at the Czech Academy of Sciences, together with their colleagues at Mainz University, have discovered a way to dramatically increase data processing rates by around 100 times up to terahertz speeds.

When nuclei catch up with electrons

17.04. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In an attosecond study of the H2 molecule, physicists at ETH Zurich found that for light atomic nuclei, as contained in most organic and biological molecules, the correlation between electronic and nuclear motions cannot be ignored.

A milestone in petahertz electronics

13.03. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In a semiconductor, electrons can be excited by absorbing laser light. Advances in the past decade have enabled measuring this fundamental physical mechanism on timescales below a femtosecond (10-15 s). Now, physicists at ETH Zurich have resolved the response of electrons in gallium arsenide at the attosecond (10-18 s) timescale, and gained unexpected insights for future ultrafast opto-electronic devices with operation frequencies in the petahertz regime.

Electrons surfing on a laser beam

11.10. 2017 Optics & Photonics News - Optics, Photonics, Physics News

The Large Hadron Collider at CERN in Switzerland, the largest accelerator in the world, has a circumference of around 26 kilometres. Researchers at Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Germany, are attempting to go to the other extreme by building the world's smallest accelerator—one that fits on a microchip. The research team has now taken another step towards achieving this ambition.