Intelligent Machines

Printed Stickers Designed to Monitor Food Temperatures

Effort aims to merge technology from four companies to create the first sticker with all-printed electronics.

  • by David Talbot
  • January 30, 2012
  • Printed power: Printed rechargeable battery cells, made by a startup spun out of the University of California, Berkeley, can be made in various shapes. They will be used to power the temperature monitoring system.

A plastic temperature-recording sticker that could provide detailed histories of crates of food or bottles of vaccine would be the first to use all-printed electronics components—including memory, logic, and even the battery. The cost per sticker could be only 30 cents or less.

Thin Film Electronics, based in Oslo, Norway, aims to marry the company’s printed memory with printed transistors from PARC in Palo Alto, California; a printed temperature sensor from PST Sensors, a spin-off from the University of Cape Town in South Africa; and a printed battery from Imprint Energy, a spin-off from the University of California, Berkeley. The first prototype using all the components is expected later this year.

“There are lots of efforts in academia and research where they play with printing electronics,” says Janos Veres, who manages the printed electronics team at PARC. What’s new is “somebody trying to do it commercially and figuring out what are the first things you can make with 10 or 20 bits of memory and a simple battery,” he says. “We need a library of different building blocks that are made by the same standard manufacturing process to get this ecosystem working.”

The envisioned product will be designed to work either with a printed display or a contact readout, and include a battery that can last six to nine months, allowing the sticker to make a continuous record of temperature. Existing temperature sensor stickers that cost just pennies offer a crude measurement—using a chemical reaction to change color when they hit certain thresholds, alerting to possible spoilage.  

Flexible logic: These printed transistors will be packaged with printed memory, sensor, and battery components for a cheap commercial temperature-monitoring system.

At the higher end, systems that can record exact temperatures over long periods of time, and store this data for either display or retrieval, cost $15 to $25 or more, and are limited to high-value items or pallet-sized shipments.

Jennifer Ernst, a Thin Film Electronics vice president, says the mix of materials, substrates, and printing technologies is still in development. “To the best of my knowledge, it’s the first time a set of companies have announced a plan to put a fully integrated system together,” she says. If it all works out and the performance is reliable, “we can achieve cost targets that silicon systems just can’t touch,” she adds.

Become an MIT Technology Review Insider for in-depth analysis and unparalleled perspective.
Subscribe today

Uh oh–you've read all five of your free articles for this month.

Insider Premium

$179.95/yr US PRICE

More from Intelligent Machines

Artificial intelligence and robots are transforming how we work and live.

Want more award-winning journalism? Subscribe to Insider Premium.

  • Insider Premium {! insider.prices.premium !}*

    {! insider.display.menuOptionsLabel !}

    Our award winning magazine, unlimited access to our story archive, special discounts to MIT Technology Review Events, and exclusive content.

    See details+

    What's Included

    Bimonthly home delivery and unlimited 24/7 access to MIT Technology Review’s website.

    The Download. Our daily newsletter of what's important in technology and innovation.

    Access to the Magazine archive. Over 24,000 articles going back to 1899 at your fingertips.

    Special Discounts to select partner offerings

    Discount to MIT Technology Review events

    Ad-free web experience

    First Look. Exclusive early access to stories.

    Insider Conversations. Join in and ask questions as our editors talk to innovators from around the world.

You've read of free articles this month.