It Explains the types and applications of nanosensor in Medical Field

1. BY
ARAVINDKUMAR B
IN MEDICAL FIELD

2. SENSOR
•SENSES
ACTION
TRANSDUCER
•CONVERTS
I/P TO
ELECTRIC
SIGNAL
DETECTOR
•DETECTS
CHANGE
OCCURED
WHATISNANO SENSOR?
NANO+SENSOR

3.  Sensors operating on the scale of atoms
and molecules
 Smaller size, lower weight, modestpower
requirements
 Data storagesystems

4.  PHYSICAL SENSORS
 CHEMICAL SENSORS
 BIOSENSORS
i. Bio receptors
ii. Transducers
iii. Detectors

5. CANTILEVER ARRAY SENSORS
NANOTUBE SENSORS
NANOWIRE SENSORS

6. CANTILEVERARRAY SENSOR

7.  WORKING
BIO
CHEMICAL/PHYSIC
AL PROCESS
MICRO ELECRO
MECHANICAL
SYSTEM

8. PRECISSION CANTILEVERS: 300 nm THICKNESSTOLERANCE
PRECISSION RESONANCE FREQUENCY: SPECIALCANTILEVER
MOUNT
EASY HANDLING: VERTICAL CHIP SIDEWALLS,OPTIONALNON
STICKING
CONTAMINATION FREESTORAGE

9. SIZE/SHAPE
RECTANGULAR SHAPED SILICON BARS
DUOSENSISSENSORS(2 CANTILEVERS PER CHIP)
OCTOSENSIS SENSORS(8 CANTILEVERS PER CHIP)

10. FOR DIAGNOSISOF DIABETESMELLITUS
Small amounts of acetone in a patient’s breath can be detected by cantilever
array sensor technique which may attribute to early diagnosis of diabetes
mellitus.
FOR DETECTION OF BACTERIAS,FUNGI,VIRUSES
antigens on cell membrane surface results in additional mass loading, ultra-
sensitively detected by the device using nanochemical oscillator
The detection sensitivity is in the order of a single bacterium corresponding to a
mass of ~1pg

11. FOR CANCERDIAGNOSIS
When the cancer-associated molecules bind to the cantilevers, changes in
surface tension cause the cantilever to bend
The mass detection limitation of NEMS cantilevers is improved to the enumeration
of a single DNA molecule consisting of ~1600base pairs and weighing ~1ag
(atto =10^18).

12. NANOTUBE SENSOR

13. SIZE/SHAPE
coatedwith strands of DNA
could detect molecules on the order of one
part per million

14. PLATFORM
The Nano sensors could sniff molecules out of the air or
taste them in a liquid, suggesting applications ranging
from domestic security to medical detectors.

15. NANO WIRE SENSOR

16. DNA(DETECTOR)
NANOTUBE(TRANSMITTER)
SINGLE
STRANDED
DNA
CARBON
NANOTUBE
NANOWIRE