I recently joined the IIT Madras for doing engineering degree and came to know about the term Transmission Electron Microscopy (c) want to know in detail about the IITM TEM. Can you please tell me what the Transmission Electron Microscopy (TEM) is whether is this any course of this University or something else?

Pradeep Research Group is included with new materials. Frequently the constituents of these materials are "nano" objects. It investigates the likelihood of finding novel physical and substance properties of these items. Some of these examinations have prompted to practical advances. It is additionally intrigued by delicate materials, for example, ice, particularly the surface of ice, where we have discovered new wonders.

The reviews added to the comprehension of the structure of atoms in nanoscale gatherings. We found new responses of materials at the nanoscale and created novel utilizations of nanoparticles. An item in light of our exploration has as of now been marketed.

It found another oscillatory marvel on ice surfaces and found that active boundaries can capture even most straightforward responses on them. Most as of late we have demonstrated that dispersion of atoms through ice brings out amazements, which have suggestions to the science of ice particles.

HRTEM is an instrument for high-amplification investigations of nanomaterials. High determination makes it ideal for imaging materials on the nuclear scale. A primary favorable position of a TEM over different magnifying lens is that it can all the while give informations in genuine space (in the imaging mode) and proportional space (in the diffraction mode). Our instrument has a solitary tilt stage and greatest Tilt Angle of - 10º to +10o in Goinometer. The instrument can work in Bright-Field, Dark-Field, High determination, SAED and CBED modes. We have a standard test and a variable temperature test (100 to 500 K). TEM is combined with a Gatan advanced camera for computerized picture handling. The instrument can go upto a most extreme amplification of 1.5 million. It has an ACD (hostile to sullying gadget) working with the guide of fluid nitrogen, which helps the fiber from pollution brought on by unstable specimen.

Hypothesis of Operation

Essential standard of TEM is very like their optical partners, the optical magnifying lens. The significant distinction is that in TEM, an engaged light emission rather than light is utilized to "picture" and accomplish data about the structure and organization of the example. An electron source normally named as the "Weapon" delivers a flood of electrons which is quickened towards the example utilizing a positive electrical potential. This stream is then engaged utilizing metal gaps and attractive focal points called "condenser focal points" into a thin, engaged, monochromatic bar. Shaft strikes the example and a piece of it gets transmitted through it. This part of the pillar is again engaged utilizing an arrangement of focal points called "target focal points" into a picture. This picture is then nourished down the segment through the "halfway and projector focal points", which broadens the picture, contingent on the set amplification. A phosphor picture screen is utilized to create the picture. The picture strikes screen and light is incited, which empowers the client to see the picture. The darker territories of the picture speak to the thicker or denser locale of the specimen (less electrons were transmitted) and the lighter regions of the picture speak to those regions which are more slender or less thick (more electrons were transmitted)