Time Scale Stretching For Improving Prediction Of Extreme Events

A technique currently applied in the field of photonics could help predict rogue wave events on the ocean surface, along with other extreme natural phenomena. Stretching time scales to explore extreme events in nature is possible, according to a team from the Institut FEMTO-ST, which used an innovative measurement technique enabling the capture of such events in real time. This research was conducted in collaboration with teams from Finland, Ireland, and Canada, [Read More]

Femtosecond Laser Pulse Control Of Electron Microscope Nanotips

A method of controlling electron emissions with higher precision than ever before has been developed by researchers at Vienna University of Technology, together with colleagues from the FAU Erlangen-Nürnberg in Germany. In an electron microscope, electrons are emitted by pointy metal tips, so they can be steered and controlled with high precision. Recently, such metal tips have also been used as high precision electron sources for generating X-rays. With the help of two laser pulses, it is now possible to switch the flow of electrons on and off on extremely short time scales. [Read More]

Light Can Mold and Move Hydrogels

Using only light, hydrogels and be moved around and re-shaped, computer simulations done at the University of Pittsburgh have shown. Animals like the octopus and cuttlefish that transform their shape depending on their environment have long been the subject of interest for researchers. This is because mimicking similar biological responses in non-living organisms would have considerable implications in the medical arena. Using hydrogels, which are the materials that constitute most contact lenses and microfluidic or fluid-controlled technologies, such a biomimetic response has now been demonstrated. [Read More]

Multifocal Car Side Mirror without Blind Spots or Distortions

A new optical design for motor vehicle side-view mirrors may end the famous “blind spot” in traffic. And all without distorting the perceived distance of cars approaching from behind, making it easier to judge distance and speed. The idea was proposed by researchers Hocheol Lee and Dohyun Kim at Hanbat National University in Korea and Sung Yi of Oregon’s Portland State University. Modern cars use two kinds of mirrors, one for the driver side and one for the passenger side. [Read More]