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
  • Get the Ultimate Guide to OSHA Recordkeeping

    OSHA’s Form 300A posting deadline is February 1! Are you prepared? To help answer your key recordkeeping questions, IndustrySafe put together this guide with critical compliance information.

  • Steps to Conduct a JSA

    We've put together a comprehensive step-by-step guide to help you perform a job safety analysis (JSA), which includes a pre-built, JSA checklist and template, steps of a JSA, list of potential job hazards, and an overview of hazard control hierarchy.

  • Levels of a Risk Matrix

    Risk matrices come in many different shapes and sizes. Understanding the components of a risk matrix will allow you and your organization to manage risk effectively.

  • 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.

  • Industry Safe
TenCate FR Technology

OH&S Digital Edition

  • OHS Magazine Digital Edition - October 2020

    October 2020

    Featuring:

    • FACILITY SECURITY
      EHS Compliance: Make it Personal
    • FOOT PROTECTION
      Choosing the Right Safety Shoe for Your Industry
    • HAND PROTECTION
      A Requirements Checklists for Work Safety Gloves
    • COVID-19 MANAGEMENT
      Contemporary Issues in HSE Management
    View This Issue