A Solar cell you can Bend and Soak in,Water

image of waterproof and flexible device
Waterproof and flexible organic photovoltaic film developed in this study

Researchers from the RIKEN Center for Emergent Matter Science and collaborators have developed an organic photovoltaic film that is both waterproof and flexible, allowing a solar cell to be put onto slothes and still function correctly after being rained on or even washed.

One of the potential uses of organic photovoltaics is to create wearable electronics — devices that can be attached to clothing that can monitor medical devices, for example, without requiring battery changes.

However, researchers have found it challenging to achieve waterproofing without the use of extra layers that end up decreasing the flexibility of the film.

Now, in work published in Nature Communications, a group of scientists ha...

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Sleeping Supermassive Black Holes Awakened briefly by Shredded Stars

An illustration of the formation of CSOs.
This illustration shows how Compact Symmetric Objects, or CSOs, likely form. When a single, massive star wanders too close to a black hole (left), it is devoured. This causes the black hole to shoot out an ultrafast, bipolar jet (center). The jet extends outward and its hot ends glow with radio emissions (right).Credit: B. Saxton/NRAO/AUI/NSF

Radio observations of Compact Symmetric Objects (CSOs) provide new window on black holes. Astronomers have concluded that an obscure class of galaxies known as Compact Symmetric Objects, or CSOs, are not young as previously thought but rather lead relatively short lives.

A new investigation into an obscure class of galaxies known as Compact Symmetric Objects, or CSOs, has revealed that these objects are not entirely what they seem...

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Consistently Exercising 2–3 times a week over the Long Term linked to Lower Current Insomnia Risk

active vs lazy
Credit: Unsplash/CC0 Public Domain

Consistently exercising 2–3 times a week over the long term is linked to a lower current risk of insomnia as well as the ability to clock up the recommended 6–9 hours of shut-eye every night, suggests an international 10-year study published in the open access journal BMJ Open.

Regular exercise is associated with better overall health, and several studies have suggested that physical activity promotes better quality sleep and may improve symptoms of chronic insomnia, note the researchers.

But it’s not entirely clear how much gender, age, weight (BMI), overall fitness, general health, and exercise type contribute to this association, they add.

To explore this further, the researchers assessed the frequency, duration, and intensity of weekl...

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Researchers Send Data 4.5 million times Faster than Average Broadband

Aston University researchers send data 4.5 million times faster than average broadband
Dr. Ian Phillips with the wavelength management device. Credit: Dr. Ian Phillips

Aston University researchers have sent data at a speed that is 4.5 million times faster than the average home broadband. The rate is the fastest ever sent by opening up specific new wavelength bands that are not yet used in fiber optic systems.

As part of an international collaboration, the academics transferred data at a rate of 301 terabits or 301,000,000 megabits per second, using a single, standard optical fiber.

That’s compared to Ofcom’s UK home broadband performance report published in September 2023, which stated that the average broadband speed is just 69.4 Mbit/s megabits per second.

Professor Wladek Forysiak from Aston Institute of Photonic Technologies and Dr...

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