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Sensor100

January 2016

18

Ocean OpticsVideo: Focus on Food Integrity

How often do we consider where our food comes from and whether it’s authentic

or even safe? In this video, we discover how the Flame-NIR spectrometer measures

reflectance to identify the variety and sweetness of apples.

Click

HERE

to view the video

Sensors for Food and Agriculture: Selectivity for Key

Markers and the Development of Scalable Manufacture

Gases emitted by plants indicate the ripeness of produce.An inexpensive low power

gas sensor would improve economics by optimizing the harvest, storage, transportation

and distribution of food. This project at the

MIT Deshpande Centre forTechno-

logical Innovation

has developed a low cost ethyl-

ene sensor allowing for less food spoilage and more

efficient distribution. The technology from this proj-

ect was spun out into a startup company,

C2Sense

.

Working principle of the sensor chip

: Carbon

nanotubes and a selector (2) are deposited between

two electrodes (1).A voltage is applied (3) and the

current (4) is measured.When the analyte is present,

the current changes.

For more information:

MIT Deshpande Centre