Archive for the ‘electronics’ category: Page 10

Feb 25, 2023

Electrodes build themselves inside the bodies of live fish

Posted by in categories: chemistry, electronics

Substance that transforms into a conductive polymer using the body’s own chemistry could improve implantable electronics.

Feb 22, 2023

Some Wearable Gadgets Could Interfere With Cardiac Electronic Devices, Study Suggests

Posted by in categories: electronics, wearables

Previous studies recommended keeping electronics at a six-inch distance from implantable cardiac devices.

Feb 21, 2023

These underwater cables can improve tsunami detection

Posted by in category: electronics

Telecom companies have long resisted letting scientific sensors piggyback on their subsea cables—until now.

Feb 20, 2023

First Wearable Device for Vocal Fatigue Senses When Your Voice Needs a Break

Posted by in categories: electronics, wearables

Summary: A newly developed sensor tracks a person’s vocal use and alerts them to overuse before vocal fatigue and potential injury occur.

Source: Northwestern University.

Northwestern University researchers have developed the first smart wearable device to continuously track how much people use their voices, alerting them to overuse before vocal fatigue and potential injury set in.

Feb 14, 2023

‘Sphere’ is 25 and coming to TV soon. Here’s why Michael Crichton’s mind-bending sci-fi tale is still awesome

Posted by in categories: alien life, electronics

Scientists investigate an underwater alien orb in this costly adaptation of Michael Crichton’s 1987 bestseller.

Feb 11, 2023

New photodiode with extremely low excess noise for optical communication and long range LIDAR

Posted by in category: electronics

Optical pulses, which appear as a flash of light, are used to transmit information in high speed optical fibers, and are increasingly used in Light Detection And Ranging (LIDAR) for 3-dimensional imaging. Both of these applications demand light sensors or photodiodes that are capable of detecting very low levels of light intensity down to a few photons, where a single photon is the quantized energy unit of light.

A newly published paper, “Extremely low excess noise avalanche photodiode with GaAsSb absorption region and AlGaAsSb avalanche region,” in Applied Physics Letters, details a discovery by a Sheffield research team that has the capability to transform a single electron at its input to a cascade of electrons at its output.

This multiplication process is commonly known as avalanche breakdown, while a photodiode incorporating this process is called avalanche photodiode (APD). Though the application of reverse voltage, avalanche photodiodes (often referred to as APDs) have internal gain, which means that when compared to PIN-photodiodes they typically have a higher signal-to–.

Feb 4, 2023

This Tiny Sensor is About to Make Smartphone Photography Way Better

Posted by in categories: electronics, mobile phones

A new compact multispectral sensor is able to dramatically improve the accuracy of a smartphone camera’s color reproduction.

Feb 4, 2023

Samsung Pro SSD reliability questioned as longtime partner shifts to Sabrent

Posted by in categories: computing, electronics

Samsung has earned a strong reputation among PC enthusiasts when it comes to solid-state storage. Its Pro series of SSDs are often among reviewers’ top recommendations for users seeking high-speed storage for large work files, apps, and boot drives. Over the past year, though, reliability concerns around Samsung’s 980 Pro and most recent 990 Pro have marred this reputation. It has become so notable that custom PC-maker Puget Systems, a top proponent of Samsung SSDs since the SATA days, has pulled 1TB and 2TB Samsung drives from its lineup.

For Puget, problems with Samsung SSDs, which the 22-year-old boutique PC shop sells in its custom-built systems, started with the 980 Pro that came out in September 2020. On January 31, Puget wrote a blog noting it received a surprising number of reports of failing Samsung drives, specifically with the 2TB version of the 980 Pro.

The most common failure mode that we have found is that the drives are suddenly locked into read-only mode, rendering the drive unusable. If the failed drive is the primary drive, then the system becomes unbootable until the drive is replaced and the OS is reinstalled, Chris Newhart, a Tier 2 repair technician at Puget, wrote.

Feb 3, 2023

New Faraday Cages Can Be Switched Off and On

Posted by in categories: electronics, materials

Advanced new Faraday cages—the metal mesh enclosures that can block wireless signals—can also be switched on and off for reversible protection against noise, a new study finds.

In addition, these new shields can be easily fabricated through a technique akin to spray-painting, which could help them find use in electronics, researchers say.

Built out of a novel material called MXene, these cages could block and allow signals as desired.

Jan 31, 2023

Curious bear takes 400 selfies with wildlife motion capture camera

Posted by in category: electronics

Of the camera’s 580 photos, 400 were bear selfies.

The City of Boulder Open Space and Mountain Parks (OSMP) team in Colorado reported this week in a Tweet that an adorable bear was eager to strike a pose for wildlife motion capture cameras.

Making headlines around the world.

Continue reading “Curious bear takes 400 selfies with wildlife motion capture camera” »

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