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CHARACTERISATION TOOL FOR BIOMATERIALS SCANNING ELECTRON MICROSCOPE GAUTAM KKS

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CHARACTERISATION TOOL FOR BIOMATERIALS

SCANNING ELECTRON MICROSCOPE

GAUTAM KKS
Electron Microscopy
High Voltage Unit
Online UPS
Chillar Unit
• mean free path of electrons v short in air

- at least 10 -5 mbar usually aimed for

• also

- tungsten filaments burn out in air

- columns must be kept dust free

• achieved by 2-fold pumping:

rotary (mechanical) pump + diffusion pump

or + turbo pump

why high vacuum ?
Rotary Pump
how does a diffusion pump work?
Defusion Pump
Sputter Unit
Gold Plate
the electromagnetic lens
(SEM) and TEM
ANT
ANT EYE
ANT LEG
TEFLON TAPE
FIBERS
FRACTURED 1
FRACTURED 2
AL CU MICROSTRUCTURE
NANOPARTICLES
WEARED SURFACE
WEARED SURFACE 2

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