Creating minuscule devices that can mimic olfactory systems is nothing new, but an international team of researchers are reportedly working to improve an existing design by basing it on metal oxide nanowires. Granted, the actual technology is a bit above our noses, er, heads, but according to Dr. Andrei Kolmakov, the team's aim was to "demonstrate the excellent performance of a practical device made by combining bottom-up fabricated SnO2 nanowires / nanobelts as sensing elements with a multi-electrode KAMINA [e-nose] platform." More specifically, these gurus decided to implement a "completely new morphology of the sensing layer" composed of tin oxide nanowires rather than the traditional thin-film sensing element. Not surprisingly, those working on perfecting the device are hoping to one day have it installed in areas where intelligent sensor systems are used, but we wouldn't overlook the possibility of finding these things embedded in shirts of the future for those paranoid about their freshness.

[Via Coolest-Gadgets]

While we've already seen just how savvy dogs are at scouting out cellphones, researchers around the globe have teamed up to find out how pups distinguish the aromas that each individual emits, and the result is a highly influential electronic nose. Now if the boys in blue can't track you down via fingerprint, EEG signatures, or just looking at those guilt-filled eyes, it looks like your "aroma fingerprint" just might find you out anyway. The team has uncovered that each human has at least 44 chemical compounds in their odors that can be distinguished, and aside from assisting in identification, can be used in forensic studies to determine true causes behind crimes, deaths, or other misdemeanors. It's even stated that this new technique can assist officials in learning about one's "gender, lifestyle, whether or not they smoke, recent meals, and stress levels." Of course, criminals could be shaking in their boots, but until the scientists find a way to sniff through "deodorant and perfume," we can't exactly count on this being reliable.

[Via Spluch]

The last time we checked in on electronic nose technology, hospitals were using the still-boutique devices for very specialized institutional work such as monitoring nasty bacteria outbreaks. Recent breakthroughs by a company called Nanomix, however, could make E-Noses a standard tool in every patient examination room, with UC Berkeley researchers using the company's tech to design cheap devices that can "sniff out" disease-laden molecules in samples a person's breath. Nanomix's "Sensation" detection platform uses multiple, configurable carbon nanotube-based sensors to instantly provide a reading from a puff or air, although the exact diseases that the battery-powered devices will be programmed to detect have not been announced. We do know that the first application of this tech will probably be for carbon dioxide detection, allowing emergency personnel to immediately determine the efficacy of breathing tubes used to stabilize patients on board an ambulance.