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‘Smart necklace’ biosensor may track health status through sweat

Study tested ability of device to track glucose levels during exercise

26-Jul-2022

Researchers have successfully tested a device that may one day use the chemical biomarkers in sweat to detect changes in a person’s health. In a new study, a team from The Ohio State University demonstrated a battery-free, wireless biochemical sensor that detected the blood sugar – or glucose – ...

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Smoke Detector “Sniffs out” Causes of Fire

Alarm Before There Is Even a Fire

13-Jul-2022

INNOspace Masters is an annual ideas competition that showcases new ideas for space and earth applications. A team from ZARM and IWT at the University of Bremen, in collaboration with the Institute for Physical and Theoretical Chemistry at the University of Tübingen, has now won the DLR Design ...

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Tears instead of Blood

Sensor with separation capability: diagnosing jaundice using tear fluids

28-Jun-2022

Human tear fluids contain many proteins, metabolites, and other molecules whose concentrations change significantly with certain diseases. A research team has now developed a handy test kit for tears that can identify patients with jaundice. Their success is based on a hybrid sensor that ...

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Wearable chemical sensor is as good as gold

A novel Raman chemical sensor made from noodlelike threads of gold

27-Jun-2022

Researchers created a special ultrathin sensor, spun from gold, that can be attached directly to the skin without irritation or discomfort. The sensor can measure different biomarkers or substances to perform on-body chemical analysis. It works using a technique called Raman spectroscopy, where ...

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Sniffing out your identity with breath biometrics

Researchers develop an olfactory sensor using your unique chemical composition to confirm who you are

24-Jun-2022

Biometric authentication like fingerprint and iris scans are a staple of any spy movie, and trying to circumvent those security measures is often a core plot point. But these days the technology is not limited to spies, as fingerprint verification and facial recognition are now common features on ...

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Scientists create luminescent gels with multitude of applications from counterfeiting to bio-sensing

15-Jun-2022

Scientists from Trinity College Dublin have taken inspiration from nature to create luminescent, self-healing gels with a suite of potential applications ranging from bank note counterfeiting to next-gen bio-sensing and imaging. Crucially, the scientists have been able to introduce guanosine (a ...

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‘E-nose’ sniffs out mixtures of volatile organic compounds

Accurately distinguish xylene isomer mixtures

13-Jun-2022

As paint thinner, ink and adhesives dry, they can release volatile organic compounds (VOCs), which can negatively impact health. Typically, one of those VOCs is xylene, which exists as three isomers with the same elements but slightly different arrangements. Because the isomers are so similar, ...

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Nano-sensor detects pesticides on fruit in minutes

The new nano-sensors employ a 1970s discovery

08-Jun-2022

Researchers at Karolinska Institutet in Sweden have developed a tiny sensor for detecting pesticides on fruit in just a few minutes. The technique, described as a proof-of-concept in a paper in the journal Advanced Science, uses flame-sprayed nanoparticles made from silver to increase the signal ...

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Novel sensors enable precise measurement of dopamine

Carbon nanotubes glow brighter in the presence of neurotransmitters. This facilitates the easy and accurate measurement of signals between nerve cells

30-May-2022

Dopamine is an important signalling molecule for nerve cells. Its concentration could not be precisely determined with both high spatial or temporal resolution until now. A new method has now made this possible: A research team from Bochum, Göttingen and Duisburg used modified carbon nanotubes ...

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New process revolutionizes microfluidic fabrication

Structural color printing creates new pathways for medical diagnostics and miniaturized sensors

26-May-2022

Microfluidic devices use tiny spaces to manipulate very small quantities of liquids and gasses by taking advantage of the properties they exhibit at the microscale. They have demonstrated usefulness in applications from inkjet printing to chemical analysis and have great potential in personal ...

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