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Sensor100
April 2017
30
Healthcare
DGIST Develops 20Times Faster Biosensor
A research team from Daegu Gyeongbuk Insitute of Sceince and Technology,
(DGIST), Korea, has developed a biosensor platform which has 20 times faster
detection capability than existing biosensors using magnetic patterns resembling
a spider web.
The sensing capability of a biosensor is determined by the resolution of the sen-
sor and the move-
ment and reaction
rate of molecules.
Many research
groups have been
improving the
resolution through
the development of
nanomaterials but
there has been a
limitation to im-
prove the sensors’
sensitivity due to
the low diffusion
transport of biomol-
cules toward the
sensing region.
Professor Kim and
his research team used a magnetic field in order to overcome the drawback
that the movement of biomolecules such as proteins and DNA is slow when the
transport only depends on diffusion.The biomolecules labeled with superpara-
magnetic particles and the use of an external magnetic field enabled the move-
ment of the biomolecules to be easily controlled and detected with an ultra-sen-
sitive magnetic sensor.
DGIST PR Centre21 April