A dog can accurately detect the early presence of lung cancer by sniffing patients’ breath, doctors in Germany say. While researchers have known for some time that dogs can sniff out the telltale signs of other forms of cancer, this is the first study that proves dogs can reliably smell this particular kind.
A new type of sensor can identify substances as small as a molecule by examining the light they reflect, potentially leading to sensors for a wide range of substances, from explosives to cancer.
The DARPA-funded sensor uses a chip full of metal pillars to boost the light signals bouncing off an object. It’s a billion times more sensitive than was previously possible, according to researchers at Princeton University.
A new generation of e-nose uses a DNA scaffolding and molecular fluorescence to distinguish among various vapors, in a breakthrough that could make electronic sniffers more powerful and simpler to produce, according to researchers at Stanford University.
The method could conceivably detect anything from spoiled milk to explosives, the researchers say -- a major advancement over existing e-noses, which search for only a couple of specific molecules.
A colorimeter's colorful results showing different coffee aromas
University of Illinois
A cheap meter can now translate the most esoteric coffee aromas into pretty colored dot patterns that anyone can recognize. The device also works like a radiation dose badge that can warn workers when they have been exposed to toxic gases, according to Sciencepunk.
Cell phones have increasingly become mobile labs and tech tools for researchers, and now NASA has gotten in on the act. A postage-stamp-sized chemical sensor allows iPhones to sniff out low airborne concentrations of chemicals such as ammonia, chlorine gas and methane.
A puff from a "sample jet" helps sense any airborne chemicals. That information gets processed by a silicon chip consisting of 16 nanosensors, and then passes on to another phone or computer through any Wi-Fi or telecom network.
A rose by any other name would smell as sweet; we all know that. But what about a rose smelled by a non-human nose? What would it smell like?
Well, an electronic nose is no Shakespeare, so you'd lose some of the poetry. But a new generation of e-noses is is poised to give a whole new meaning to the sense of smell.
Researchers are now profiling the chemicals released from decaying bodies, in an effort to create a sensor that might be able to sniff out corpses in the rubble, or determine a dearly departed's precise time of death.