sensors

An atom-based magnetic sensor the size of a sugar cube has successfully measured human brain activity, a milestone that could ultimately lead to advancing our understanding of a wide range of neurological conditions and diseases, according to researchers at the National Institute of Standards and Technology (NIST).

We first reported on an earlier iteration of the sensor, which has been in development since 2004, back when the team was first able to use the sensor to track a human heartbeat in 2010.

This week, the researchers report in the journal Biomedical Optics Express that their tiny sensor -- which consists … Read more

Like something out of George Orwell's "Nineteen Eighty-Four" where "Big Brother is watching you," Google is trying to patent technology that could pick up on background noise during mobile-phone calls and then promote related ads.

The title of the patent application is "Advertising Based on Environmental Conditions," and it was first reported today by tech-news site The Next Web. Apparently, the technology will be able to listen in on background noise, like rain, music, or a baseball game, and then serve related ads, such as a spot for an umbrella, a new album, … Read more

Affordable paper sensors aren't exactly new. Think home pregnancy tests. But researchers out of the University of Texas at Austin are pushing (or is it folding?) the envelope with their origami-inspired 3D paper sensor that, thanks to strategic folding, can identify more substances in more complex tests.

Able to be printed at less than a dime a sensor using an ordinary office printer and less than a minute of folding, the origami Paper Analytical Device (which they've dubbed oPAD) "is about medicine for everybody," said Richard Crooks, a chemistry professor who built the sensor with doctoral student Hong Liu, in a school news release.

Liu was first inspired to use origami when he read a paper by Harvard chemist George Whitesides, who is the first to build a 3D microfluidic paper sensor to target biological agents.… Read more

Sigma has radically repriced its SD1 camera, saying manufacturing improvements let it lower the unusual SLR's cost by two-thirds to $3,300.

Sigma introduced the SD1 in 2011 with a premium price of $9,700--chiefly for its Foveon sensor, given that other specifications were ordinary. Although the sensor is small, about the size of those on mainstream SLRs from Nikon and Canon, it has the unusual ability to capture red, green, and blue light values for each pixel, not just a single color as with conventional sensors.

The Foveon design therefore can produce better detail, at least theoretically, … Read more

The image sensor group that beleaguered photography company Eastman Kodak sold last November has been named Truesense Imaging.

Platinum Equity, which bought the Kodak image-sensor group shortly before Kodak filed for bankruptcy protection, announced the new name yesterday.

Getting a name is a cosmetic detail, but it's an important one for a former business group trying to set up shop as a business. The company sells image sensors for industrial and professional applications such as high-end medium-format cameras and video equipment with high frame rates.

"As an independent company, we now have a great opportunity to expand our … Read more

Scientists and engineers have built a monitor that tracks heart rate, respiration, and movement--without requiring direct contact with skin.

The "life and activity" monitor, developed at Oregon State University, is wearable and non-invasive. The team worked with researchers at the University of California at San Diego to develop a noncontact sensor that is essentially an electric field sensor for tracking the heart rate through materials such as clothing.

The sensor also includes a 5-axis inertial measurement unit that allows for ongoing and simultaneous monitoring of movement, heart rate, and respiration. Imagine adhering such a device to your pants … Read more

Prepare to see another giant leap in smartphone picture-taking quality this year.

Sony announced today three new back-illuminated stacked CMOS image sensors optimized for bright and low-light conditions. The new compact sensors are faster, consume less power than previous versions, and will be available in 8- to 13- megapixel flavors. Most notably, the sensors feature new "RGBW Coding" and "High Dynamic Range (HDR) Movie" abilities baked directly onto the hardware. The iPhone 4S features a Sony 8-megapixel sensor, and it's possible that this may be a preview of the camera sensor inside the iPhone 5.

You might recognize the RGB acronym, as it stands for red-green-blue; the new sensor adds white pixels to the mix that pumps up the sensor's light sensitivity. It is possible that a future smartphone with this sensor will have little problem shooting pictures in dark rooms (or at night), as evidenced in the example picture above. Another benefit to the RGBW coding is that no changes to signal processing are required to support this updated technology, making it easy to implement. Surprisingly, Kodak has been shopping around something like this technology since at least 2007. … Read more

Regardless of the condition of your OS installation, if your system's hardware is not working properly then you will undoubtedly see undesired behavior that can stem from slowdowns and hangs to full system crashes and data corruption.

Because of the importance of having working hardware, Apple includes a hardware test routine on all of its new Mac systems, some of which are on the boot drive of your Mac, an others that are on the included OS X installation DVDs that came with older systems.

If you experience problems with your system crashing, hanging, or overheating with no change … Read more

Engineers at Japan's Advanced Institute of Industrial Technology have developed a system that can recognize individuals by measuring how they apply pressure on a seat when sitting down.

Nikkei reports that a team led by professor Shigeomi Koshimizu is working to commercialize the system as a "highly reliable" anti-theft system. The timeline? Two to three years, if an automaker signs on.

It's the car seat of the future. Or perhaps the airplane seat of the future--no need to show your ticket or appeal to a flight attendant to boot someone out of your coveted window seat. … Read more