Part of the Electronics glossary:

This definition generally duplicates our definition for MEMS .

Smart matter is another term for micro-electromechanical systems (MEMS), a technology that combines computers with tiny mechanical devices such as sensors, valves, gears, mirrors, and actuators imbedded in semiconductor chips. Paul Saffo of the Institute for the Future in Palo Alto, California, believes MEMS or what he calls analog computing will be "the foundational technology of the next decade."

MEMS are already used as accelerometers in automobile air-bags. They've replaced a less reliable device at lower cost and show promise of being able to inflate a bag not only on the basis of sensed deceleration but also on the basis of the size of the person they are protecting. Basically, a MEMS device contains micro-circuitry on a tiny silicon chip into which some mechanical device such as a mirror or a sensor has been manufactured. Potentially, such chips can be built in large quantities at low cost, making them cost-effective for many uses.

Among the presently available uses of MEMS or those under study are:

  • Global position system sensors that can be included with courier parcels for constant tracking and that can also sense parcel treatment en route
  • Sensors built into the fabric of an airplane wing so that it can sense and react to air flow by changing the wing surface resistance; effectively creating a myriad of tiny wing flaps
  • Optical switching devices that can switch light signals over different paths at 20-nanosecond switching speeds
  • Sensor-driven heating and cooling systems that dramatically improve energy savings
  • Building supports with imbedded sensors that can alter the flexibility properties of a material based on atmospheric stress sensing

Saffo distinguishes between sensor-effector type microcomputing (which he calls "MEMS") and micro-devices containing gears, mirrors, valves, and other parts (which he calls "micro-machines").

Much support for MEMS has come from Defense Advanced Research Projects Agency Research and Development Electronics Technology Office.

This was last updated in April 2005
Posted by: Margaret Rouse

Related Terms

Definitions

  • frequency jammer

    - Frequency jamming is the disruption of radio signals through use of an over-powered signal in the same frequency range. When most people think of frequency jamming, what comes to mind are radio, r... (WhatIs.com)

  • anode

    - An anode is the electrode in a polarized electrical device through which current flows in from an outside circuit. Conversely, a cathode is the eletrode in a polarized electrical device through whi... (WhatIs.com)

  • cathode

    - A cathode is the metallic electrode through which current flows out in a polarized electrical device. Conversely, an anode is the electrode in a polarized electrical device through which current fl... (WhatIs.com)

Glossaries

  • Electronics

    - Terms related to electronics, including definitions about electrical components and words and phrases about computers, laptops parts, digital cameras, televisions and home appliances.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.