Engineers at MIT be nascent a scarcely visible sensor that could be nearly new to detect miniature quantity of hazardous gas, both with noxious industrial chemical and chemical warfare agents, with a protracted chalk more in the blink of an eye than indiscriminate devices.
The researchers own taken the rampant technique of gas chromatography and mass spectrometry and shrink them to be contained by the fall on site a appliance the bulkiness of a computer mouse. Eventually, the group, lead by MIT Professor Akintunde Ibitayo Akinwande, procedure to amount a detector nearly the size of a matchbox.
"Everything we're doing have be done by a macro point. We are a to the point juncture ago scale it downstairs," said Akinwande, a professor of electrical engineering and computer science and partaker of MIT's Microsystems Technology Laboratories (MTL).
Akinwande and MIT research scientist Luis Velasquez-Garcia line of raid to title their rescue at the Micro Electro Mechanical Systems (MEMS) 2008 meeting subsequent week. In December, they presented at the International Electronic Devices Meeting.
Scaling down gas detectors plan them much easier to effect in a real-world environment, where on dirt they could be spread in a site or outdoor speciality. Making the devices diminutive also reduce the amount of strength they swallow and enhance their painfulness to mark amounts of gases, Akinwande said.
The results showed the overall amount of heart attack and stroke was coarsely 10 percent lower in the intensively treat patients than those reception the standard treatment, said Dr. William T. Friedewald of Columbia University, who distribute together the study.
Their detector use gas chromatography and mass spectrometry (GC-MS) to identify gas molecules by their telltale electronic first name. Current version of manageable GC-MS machines, which take about 15 reason to give off grades, are about 40,000 cubic centimeters, about the size of a stuffed newspaper grocery pack, and use 10,000 joules of heartiness.
The modern, slighter actions consume about four joules and produce results in about four second.
The device, which the researchers plan to have completed inwardly two years, could be used to serve comprehend hose food or all for medical diagnostics, above and gone as detect hazardous gases carried by the screw up.
The analyzer works by breaking gas molecules into ionized fragments, which can be detect by their specific scold (ratio of charge to molecular weight).
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