Tiny Sensor Could Quickly Detect Hazardous Chemicals

Massachusetts Institute of Technology engineers are developing a tiny sensor that could be used to detect minute quantities of hazardous gases, including toxic industrial chemicals and chemical warfare agents, much more quickly than current devices.

The researchers have taken the common techniques of gas chromatography and mass spectrometry and shrunk them to fit in a device the size of a computer mouse. Eventually, the team, led by MIT Professor Akintunde Ibitayo Akinwande, plans to build a detector about the size of a matchbox.

"Everything we're doing has been done on a macro scale. We are just scaling it down," said Akinwande, a professor of electrical engineering and computer science and member of MIT's Microsystems Technology Laboratories (MTL).

Scaling down gas detectors makes them much easier to use in a real-world environment, where they could be dispersed in a building or outdoor area. Making the devices small also reduces the amount of power they consume and enhances their sensitivity to trace amounts of gases, Akinwande said.

He is leading an international team that includes scientists from the University of Cambridge, the University of Texas at Dallas, Clean Earth Technology and Raytheon, as well as MIT.

Their detector uses gas chromatography and mass spectrometry (GC-MS) to identify gas molecules by their telltale electronic signatures. Current versions of portable GC-MS machines, which take about 15 minutes to produce results, are around 40,000 cubic centimeters, about the size of a full paper grocery bag, and use 10,000 joules of energy.

The new, smaller version consumes about four joules and produces results in about four seconds.

The device, which the researchers plan to have completed within two years, could be used to help protect water supplies or for medical diagnostics, as well as to detect hazardous gases in the air.

Download Center

HTML - No Current Item Deck
  • Free Safety Management Software Demo

    IndustrySafe Safety Management Software helps organizations to improve safety by providing a comprehensive toolset of software modules to help businesses identify trouble spots; reduce claims, lost days, OSHA fines; and more.

  • Comply with OSHA’s Electronic Recordkeeping Requirements

    Collect relevant incident data and generate accurate OSHA 300, 300A, and 301 regulatory reports, including 300A CSV files for easy electronic submission to OSHA.

  • Complete Online Safety Training Courses

    Deliver state-of-the art, online safety training courses to your organization with IndustrySafe Training Management Software. Generate reports to track training compliance and automatically notify learners of upcoming or overdue classes.

  • Easy to Use Safety Inspection App

    Conduct inspections on the go with IndustrySafe’s mobile app. Complete safety audits at job sites and remote locations—with or without web access.

  • Track Key Safety Performance Indicators

    IndustrySafe’s Dashboard Module allows organizations to easily track safety KPIs and metrics. Gain increased visibility into your business’ operations and safety data.

  • Industry Safe
comments powered by Disqus