Amazing Chip

Remarkable new chip is fast enough to send the whole internet’s traffic once every second

If true this is mind-boggling

By Joshua Hawkins

Published Oct 29th, 2022 10:09 AM EDT

Researchers from the Technical University of Denmark and Chalmers University of Technology have created a superfast optical chip capable of transmitting the entirety of the internet in a single second. The chip, which is detailed in a new paper published in the journal Nature Photonics, is part of new experiments to push optical fiber communications to the next level.

The engineers were able to create a superfast optical chip that transmits data at a terrifyingly fast rate of 1.84 petabits (Pbits) per second. For reference, the entirety of the internet is believed to be a little lower than 1 Pbit a second, which means that it could all be transmitted using this new chip.

Additionally, 1.84 Pbits a second is more than 20 times faster than ESnet6, which scientific networks are just now upgrading to. For even more context, the fastest internet available to the public right now is 10 gigabits, but most places aren’t even able to constantly offer one-gigabit speeds in most places. But a petabit is one million gigabits, so the advances the optic chip offers are clear.

The new chip is so powerful it could transmit the entire internet in just one second.

What’s even more impressive, though, is that this superfast optic chip delivers these amazing speeds using just a single light source, as well as a single optical chip. The researchers created the chip by using an infrared laser that beams into what is known as a frequency comb. This is then split into hundreds of different light frequencies and colors.

It can then encode data on these various light streams before recombining them into a singular beam and transmitting it through the optical fiber. This design allows the superfast optical chip to be as powerful and fast as it is.                                                  With some companies pushing to put Wi-Fi on the Moon, as well as internet companies pushing to offer faster speeds, having tech that utilizes a super-fast optic chip like this could literally change how we access the internet and transmit data around the world.

Scientists make super-efficient heat pump with almost 100% of efficiency




July 21, 2023

The demonstrator shown here achieves an electrical efficiency of 99.75%. Credit: Fraunhofer IAF.

In a groundbreaking project named ElKaWe, researchers at Fraunhofer Institute for Applied Solid State Physics IAF in Germany have developed a new kind of heat pump that promises to be more efficient and environmentally friendly.

This heat pump technology uses what’s known as ‘electrocaloric’ effects and does not need any refrigerants, making it a great alternative to the current compressor-based heat pumps.

Heat pumps work by moving heat from one place to another and are very effective at producing heat. But the current models can only achieve about 50% of the maximum theoretical efficiency.

The researchers in the ElKaWe project aim to develop a heat pump that can theoretically reach up to 85% efficiency.

Now, you might be wondering what ‘electrocaloric’ is. Well, it’s quite fascinating!

When you apply an electric voltage to certain materials like special ceramics or polymers, they heat up.

If you remove the voltage, they cool down again, and this process is nearly completely reversible. In each cycle of applying and removing the voltage, heat is pumped from one place to another.

An important factor determining how efficient these heat pumps are is the power electronics in the system. This is where the Fraunhofer team has made a significant achievement.

They developed an ultra-efficient circuit design for voltage converters using a material called gallium nitride (GaN). These circuits reached a whopping 99.74% electrical efficiency, setting a new global benchmark.

This new converter significantly outperforms the previous ones, which had a conversion efficiency of less than 90%.

So, why is this important? Higher efficiency of the power electronics means that the entire heat pump system can perform better. Before, the efficiency of the electrocaloric heat pump systems was limited by the losses in the electronics.

But with this new, ultra-efficient converter, the heat pumps can perform much closer to their maximum theoretical efficiency.

Dr. Stefan Mönch, a researcher at Fraunhofer IAF, is quite hopeful about this development. He says, “Our ultra-efficient power electronics make it realistic for the first time to achieve well over 50% of the maximum theoretical efficiency with electrocaloric heat pumps, even at the system level.

There is still a lot of research to be done, but in [the] future this technology could become a more efficient and completely emission-free solution for heating and cooling.”

Six Fraunhofer Institutes are working together on the ElKaWe project, which aims to develop electrocaloric heat pumps for heating and cooling without the need for compressor technology and refrigerants.

They hope this work will show how this technology can be a game-changer for efficient, emission-free heating and cooling in the future. So, who knew heat could be so cool!

The study was published in the IEEE Journal of Emerging and Selected Topics in Power Electronics.