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HRTEM ( High Resolution Transmission Electron Microscope )

The financial grant for this lab was given by KFAS. This lab is equipped with a 300kV Ultrahigh Resolution Analytical Transmission Electron Microscope JEOL J EM-3010. This instrument is provided with a variety of new features such as a compact 300kV electron gun, a 4-stage independent illumination system, a new C/O Lens, a new cantilever type goniometer, motor control for the 5 axes (X, Y, Z, X-tilt, Y-tilt), a new type direct-coupling SIP (for attaining clean vacuum).

Application of Ultra High Resolution Transmission Electron Microscope

For high resoultion studies of advance materials, ceramics, silicon, semiconductors, composites, geological samples, minerals, layered structure and interfaces etc. also to study these materials by convergent beam electron diffraction (CBED), selected area electron diffraction (SAED) and nano beam diffraction techniques. Biologists can study thicker sections with good resolution. It can help them to record stereophotographs which immediately yield three dimensional information. Also, it is very useful for the high resolution studies of viruses and bacteria. 

Features

Ultrahigh resolution:

It has a point resolution of 0.17nm, spherical aberration coefficient of 0.6mm, a chromatic aberration coefficient of 1.4mm and a maximum tilt angle of ± 10degree.

Ultrahigh resolution pole piece:

The minimum size of URP in analysis is 1.0nm. This pole piece allows ultrahigh resolution observation. In structure analysis by means of CBED, the convergent angle of the incident electron beam can be optionallyhd,i set by means of the 8 - selector function.

Highly stable electron gun:

The JEM-3010 employs an extremely stable contact 300 kV electron gun which is the culmination of high voltage engineering.

Microactive goniometer with motorized 5 axes:

The JEM-3010's specimen shift system, which uses a tracker ball and x - y movement buttons makes possible smooth field search at very low magnifications and delicate specimen positioning at ultrahigh magnifications. Motor control for the 5 axes (x, y, z, x-tilt, y-tilt).

A directly coupled ion pump with bakeout function that contributes to offering a clean specimen environment so that more reliable data can be obtained.

Comprehensive management of control data by CPU.

A5-stage illumination lens system that allows instantaneous changeover between diverse illumination modes.

A6-stage image forming lens system providing rotation free images.