Lifeboat Foundation

Physicists and materials scientists have developed a compact optical device containing vertically stacked metasurfaces that can generate microscopic text and full-color holograms for encrypted data storage and color displays. Yueqiang Hu and a research team in Advanced Design and Manufacturing for Vehicle Body in the College of Mechanical and Vehicle Engineering in China implemented a 3D integrated metasurface device to facilitate miniaturization of the optical device. Using metasurfaces with ultrathin and compact characteristics, the research team designed optical elements by engineering the wavefront of light at the subwavelength scale. The metasurfaces possessed great potential to integrate multiple functions into the miniaturized optoelectronic systems. The work is now published on Light: Science & Applications.

Since existing research on multiplexing in the 2-D plane remains to fully incorporate capabilities of metasurfaces for multi-tasking, in the present work, the team demonstrated a 3D integrated metasurface device. For this, they stacked a hologram metasurface on a monolithic Fabry-Pérot (FP) cavity-based color filter microarray to achieve simultaneous cross-talk, polarization-independent and highly efficient full-color holography and microprint functions. The dual function of the device outlined a new scheme for data recording, security, encryption color displays and information processing applications. The work on 3D integration can be extended to establish flat multi-tasking optical systems that include a variety of functional metasurface layers.

Metasurfaces open a new direction in optoelectronics, allowing researchers to design optical elements by shaping the wavefront of electromagnetic waves relative to size, shape and arrangement of structures at the subwavelength. Physicists have engineered a variety of metasurface-based devices including lenses, polarization converters, holograms and orbital angular momentum generators (OAM). They have demonstrated the performance of metasurface-based devices to even surpass conventional refractive elements to construct compact optical devices with multiple functions. Such devices are, however, withheld by shortcomings due to a reduced efficiency of plasmonic nanostructures, polarization requirements, large crosstalk and complexity of the readout for multiwavelength and broadband optical devices. Research teams can therefore stack 3D metasurface-based devices with different functions in the vertical direction to combine the advantages of each device.

What appears to be a dazzling meteor lit up the sky over northeast China on Friday (Oct. 11), appearing as a brilliant fireball in surveillance videos of the event.

The meteor occurred at about 12:16 a.m. Beijing Time, turning night into day and casting dark shadows as it streaked through the sky, according to the state-run CCTV. Videos of the fireball were captured by surveillance cameras in the city of Songyuan in the province of Jilin, as well as by many residents across northeast China, CCTV reported.

The meteor also visible from Heilongjiang Province, the news agency reported.

Razer has announced a new iteration of its Blade 15 Advanced gaming laptop. Its new, clickier keyboard might be the biggest change. Otherwise, much of what this configuration offers isn’t new for Razer.

I am chronically old, but I am not old. I was on dancing with the stars. This is the new way to age. It’s not that old paradigm that says you wrinkle, frail, hunch over, have heart and other illnesses, be in a nursing home. No, there is a new paradigm. I’m the new paradigm. The older I get, the stronger and better my brain gets. I fully expect to be on the Vegas stage when I am 80.

Sync Media Network
SyncMediaNetwork.com
JTIppolito.com
MediaMarketingMgmt.com lw… https://www.youtube.com/watch?v=SaydPEfdWjk

We now have information that this sub-250-grams DJI Mavic Mini launch date will be very soon. As soon as October 30th. No information on any possible…

Scientists develop fully autonomous robots that could end the need for workers to scale dangerously-tall wind turbines.

Quantum computers have the potential to someday far outperform our traditional machines, thanks to their ability to store data on “qubits” that can exist in two states at once. That sounds good in theory, but in practice it’s hard to make materials that can do that and stay stable for long periods of time. Now, researchers from Johns Hopkins University have found a superconducting material that naturally stays in two states at once, which could be an important step towards quantum computers.

Our current computers are built on the binary system. That means they store and process information as binary “bits” – a series of ones and zeroes. This system has worked well for us for the better part of a century, but the general rate of computing progress has started to slow down in recent years.

Quantum computers could turn that trend on its head. The key is the use of qubits, which can store data as either a one, a zero or both at the same time – much like Schrödinger’s famous thought experiment with the cat that’s both alive and dead at the same time. Using that extra power, quantum computers would be able to outperform traditional ones at tasks involving huge amounts of data, such as AI, weather forecasting, and drug development.

https://www.ncbi.nlm.nih.gov/pubmed/25301715

What happens in the brain and body in the moments after cardiac arrest?

Many Fermilab followers are aware that Fermilab’s Office of Partnerships & Technology Transfer licensed the laboratory’s electromagnetic oil spill remediation technology to Natural Science LLC in 2015. This agreement enabled Natural Science, led by physicist and inventor Arden Warner, to design and develop a novel electromagnetic technology for cleaning oil spills. A key milestone of the agreement was to produce the first prototype and then move toward commercialization.

That prototype is now here. The concept that started as demonstrations with water, oil and magnetite in a 9-ounce cup has developed into a full-scale device. With Natural Science’s permission, we are sharing some images of this full-scale prototype below.

As you can see, the technology has come a long way from the permanent magnet demonstration videos you may have seen years ago when this was a mere concept. The system includes a scalable string of floating solenoid modules feeding a magnetic ramp and separator apparatus. Much engineering has gone into making these components work together as an oil spill solution.