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The Lead

Lowering Resistance

December 16, 2014 10:48 am | by Paul Livingstone | Articles | Comments

Magnetic sensing devices are an inextricable part of the global marketplace for electronic products. Nearly 6 billion units are shipped each year, and that number is rapidly growing along with electronics in general. Magnetic sensors have thousands of uses, and product designers can choose from three main types—reed, Hall-effect and magnetoresistive—to provide low-power, high-precision position sensing capability.

Organic electronics could lead to cheap, wearable medical sensors

December 10, 2014 2:19 pm | by Sarah Yang, UC Berkeley | News | Comments

Future fitness trackers could soon add blood-...

'Direct writing' of diamond patterns from graphite a potential technological leap

November 6, 2014 10:00 am | by Emil Venere, Purdue Univ. | News | Comments

What began as research into a method to...

When emotions control objects

October 20, 2014 11:51 am | by Cécilia Carron, EPFL | Videos | Comments

Sensors developed by SmartCardia, a spin-off from EPFL in Switzerland, use various biological...

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The Jefferson Project at Lake George unveils state-of-the-art data visualization laboratory

October 17, 2014 11:47 am | Videos | Comments

A partnership between Rensselaer Polytechnic Institute, IBM, and the FUND for Lake George has developed preliminary models of key natural processes within the watershed. A network of 12 sensor platforms including vertical profilers and tributary monitoring stations are now being deployed in Lake George and its tributaries, providing an unprecedented amount of data for researchers that will be interpreted at a new visualization laboratory.

New sensor uses radio waves to detect subtle changes in pressure

October 10, 2014 2:09 pm | Videos | Comments

Stanford Univ. engineers have invented a sensor that uses radio waves to detect subtle changes in pressure. Already used to monitor brain pressure in laboratory mice as prelude to possible use with human patients, this pressure-sensing technology relies on a specially designed rubber and could lead to touch-sensitive “skin” for prosthetic devices.

Plasmonic paper detects trace amounts of chemicals and molecules

October 10, 2014 12:25 pm | News | Comments

Using a common laboratory filter paper decorated with gold nanoparticles, researchers at Washington Univ. in St. Louis have created a unique platform, known as “plasmonic paper,” for detecting and characterizing even trace amounts of chemicals and biologically important molecules, including explosives, chemical warfare agents, environmental pollutants and disease markers.

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New method helps portable detection of potent “bath salts” drugs

October 1, 2014 11:25 am | News | Comments

Despite being outlawed in 2012 in the U.S., the synthetic drugs known as "bath salts" are still readily available in some retail shops, on the Internet and on the streets. To help law enforcement, scientists are developing low-cost, disposable, mercury-free electrodes that could be the basis for the first portable, on-site testing device for identifying the drugs.

“Smart” bandage emits phosphorescent glow for healing below

October 1, 2014 9:37 am | News | Comments

Inspired by a desire to help wounded soldiers, an international team has created a paint-on, see-through, “smart” bandage that glows to indicate a wound’s tissue oxygenation concentration. Because oxygen plays a critical role in healing, mapping these levels in severe wounds and burns can help to greatly improve the success of surgeries to restore limbs and physical functions.

Graphene flaws key to creating hypersensitive “electronic nose”

September 23, 2014 9:45 am | by Jeanne Galatzer-Levy, Univ. of Illinois Chicago | News | Comments

Researchers have discovered a way to create a highly sensitive chemical sensor based on the crystalline flaws in graphene sheets. The imperfections have unique electronic properties that the researchers were able to exploit to increase sensitivity to absorbed gas molecules by 300 times.

A molecule in an optical whispering gallery

September 23, 2014 9:19 am | News | Comments

Using an optical microstructure and gold nanoparticles, scientists have amplified the interaction of light with DNA to the extent that they can now track interactions between individual DNA molecule segments. In doing so, they have approached the limits of what is physically possible. This optical biosensor for single unlabelled molecules could also be a breakthrough in the development of biochips:

Nanoscience makes your wine better

September 18, 2014 1:13 pm | by Anne-Mette Siem, Aarhus Univ. | News | Comments

One sip of a perfectly poured glass of wine leads to an explosion of flavors in your mouth. Researchers in Denmark have now developed a nanosensor that can mimic what happens in your mouth when you drink wine. The sensor, which uses gold nanoparticles to act as a “mini-mouth”, measures how you experience the sensation of dryness in the wine.

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Tiny laser sensor heightens bomb detection sensitivity

July 21, 2014 7:45 am | by Sarah Yang, Media Relations, UC Berkeley | News | Comments

New technology under development at the Univ. of California, Berkeley could soon give bomb-sniffing dogs some serious competition. A team of researchers has found a way to dramatically increase the sensitivity of a light-based plasmon sensor to detect incredibly minute concentrations of explosives.

“Sensing skin” quickly detects cracks, damage in concrete structures

June 23, 2014 8:10 am | by Matt Shipman, News Services, North Carolina State Univ. | News | Comments

Researchers from North Carolina State Univ. and the Univ. of Eastern Finland have developed new “sensing skin” technology designed to serve as an early warning system for concrete structures, allowing authorities to respond quickly to damage in everything from nuclear facilities to bridges.

Tiny laser-powered sensor-on-a-chip tests chemical composition of liquids

June 11, 2014 7:51 am | News | Comments

Simple solid-state lasers consist of only one material. But quantum cascade lasers are made of a perfectly optimized layer system of different materials so the wavelength of the laser can be tuned. Now a method has been developed in Austria to create a laser and a detector at the same time, on one single chip, in such a way that the wavelength of the laser perfectly matches the wavelength to which the detector is sensitive.

PerkinElmer launches new real-time air quality sensor network

June 10, 2014 7:52 am | News | Comments

PerkinElmer, Inc., has announced the launch of Elm, an innovative air monitoring service providing local air quality analysis for individuals, smart cities and sustainable communities. The Elm service enables the visualization and understanding of relevant real-time air quality detail, providing data that can be immediately accessed, both online and on mobile devices.

Photonics experts build world's most sensitive thermometer

June 5, 2014 7:51 am | by Jack Baldwin, The Lead | News | Comments

Researchers at the Univ. of Adelaide in South Australia have created a thermometer three times more precise than any existing device, able to measure temperature to 30 billionths of a degree. Using the phenomenon called a “whispering gallery”, which projects sounds, the scientists have designed a crystalline disk that concentrates and reinforces light, allowing them to track a minute difference in speed between red light and green light.

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Detecting trace amounts of explosives with light

May 8, 2014 11:12 am | News | Comments

Research in Australia may help in the fight against terrorism with the creation of a sensor that can detect tiny quantities of explosives with the use of light and special glass fibers. The researchers have created a new optical fiber sensor which can detect explosives in concentrations as low as 6.3 ppm (parts per million). It requires an analysis time of only a few minutes.

Self-healing smart beads detect and repair corrosion

May 2, 2014 2:41 pm | News | Comments

Scientists at Battelle have developed a tiny bead that not only detects corrosion but delivers a payload to help heal the microscopic cracks that rust creates. Called the Battelle Smart Corrosion Detector, the beads look like a fine, whitish powder that can be mixed with coatings used to protect pipelines and other critical infrastructure subject to corrosion. Self-activating, they release a proprietary chemical that fills cracks.

Flexible pressure-sensor film shows how much force a surface “feels”

April 30, 2014 11:43 am | News | Comments

A newly developed pressure sensor could help car manufacturers design safer automobiles and even help Little League players hold their bats with a better grip, scientists report. The study describing their high-resolution sensor, which can be painted onto surfaces or built into gloves, appears in Nano Letters.

Label-free, sequence-specific, inexpensive fluorescent DNA sensors

April 28, 2014 8:03 am | by Karen McNulty Walsh, Brookhaven National Laboratory | News | Comments

Using principles of energy transfer more commonly applied to designing solar cells, scientists at Brookhaven National Laboratory have developed a new highly sensitive way to detect specific sequences of DNA, the genetic material unique to every living thing. The method is considerably less costly than other DNA assays and has widespread potential for applications in forensics, medical diagnostics and the detection of bioterror agents.

Nanoreporters tell ‘sour’ oil from ‘sweet’

April 21, 2014 8:38 am | by Mike Williams, Rice Univ. | News | Comments

Scientists at Rice Univ. have created a nanoscale detector that checks for and reports on the presence of hydrogen sulfide in crude oil and natural gas while they’re still in the ground. The nanoreporter is based on nanometer-sized carbon material developed by a consortium of Rice labs led by chemist James Tour, R&D’s 2013 Scientist of the Year.  

Hybrid technology could make Star Trek-style tricorder a reality

April 8, 2014 11:29 am | News | Comments

In the fictional Star-Trek universe, the tricorder was used to remotely scan patients for a diagnosis. A new device under development in the U.K. could perform that function through the use of chemical sensors on printed circuit boards. This would replace the current conventional diagnostic method, which is lengthy and is limited to single point measurements.

Tiny, wireless sensing device remotely alerts users to tell-tale vapors

April 4, 2014 2:52 pm | News | Comments

A research team has developed a small electronic sensing device that can alert users wirelessly to the presence of chemical vapors in the atmosphere.                              

Researchers change coercivity of material by patterning surfaces

March 17, 2014 9:29 am | by Matt Shipman, News Services, North Carolina State Univ. | News | Comments

Researchers from North Carolina State Univ. have found a way to reduce the coercivity of nickel-ferrite (NFO) thin films by as much as 80% by patterning the surface of the material, opening the door to more energy efficient high-frequency electronics, such as sensors, microwave devices and antennas.

The end of full-body scanners?

February 26, 2014 11:04 am | News | Comments

Standing in a full-body scanner at an airport isn’t fun, and the process adds time and stress to a journey. It also raises privacy concerns. But researchers now report making several key advances in terahertz wave sensor technology to create a more precise and direct method for using these waves to detect explosives from greater distances.

Artificial hand feels what you touch

February 6, 2014 12:23 pm | by Lauran Neergaard, AP Medical Writer | News | Comments

It's not quite the bionics of science fiction, but European researchers have created a robotic hand that gave an amputee a sense of touch he hadn't felt in a decade. The experiment lasted only a week, but it let the patient feel if different objects were hard or soft, slim or round, and intuitively adjust his grasp.

Vanadium dioxide research opens door to spintronic smart sensors

February 5, 2014 8:12 am | News | Comments

Research from a team led by North Carolina State Univ. is opening the door to smarter sensors by integrating the smart material vanadium dioxide onto a silicon chip and using lasers to make the material magnetic. The advance paves the way for multifunctional spintronic smart sensors for use in military applications and next-generation spintronic devices.

Weight loss program for infrared cameras

February 3, 2014 8:56 am | News | Comments

Infrared sensors can be employed in a wide range of applications, such as driver assistance systems for vehicles or thermography for buildings. However, IR detectors need to be permanently cooled, resulting in cameras that are large, heavy and energy-intensive. Researchers are now developing IR sensors for the far-infrared region that can operate at room temperature and a new prototype camera is providing a test bed for development.

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