TEM Resolution, Calibration and Test Standards

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Overview

Rave Scientific offers high quality TEM resolution, calibration and test standards to optimize the performance of your TEM. Manufactured from specially selected materials to produce reliable and field proven TEM test standards which are commonly used. The TEM standards are using either copper, gold or aluminum square mesh grids. The TEM performance test, calibration or resolution check can be performed where the materials span the opening in the carbon film or between the grid bars.

 

Specifications of the EM-Tec TEM resolution, calibration and test standards

Prod #	Type	Description	Purpose	Support	Grid
RS-MN-33-001010	EM-Tec TS1	Perforated carbon film	Test	Grid	Cu/400m
RS-MN-33-001020	EM-Tec TS2	Evaporated Pt/Ir	Test	Holey C	Cu/300m
RS-MN-33-001030	EM-Tec TS3	Combined test specimen	Test	Holey C	Cu/300m
RS-MN-33-001040	EM-Tec TC1	Oriented gold crystal	Calibration	Holey C	Au/400m
RS-MN-33-001050	EM-Tec TC2	Evaporated Al film	Calibration	Holey C	Cu/300m
RS-MN-33-001060	EM-Tec TC3	Cu foil on Al TEM grid	Calibration	Grid	Al/200m
RS-MN-33-001070	EM-Tec TR1	Fine gold particles	Resolution	Carbon	Cu/300m
RS-MN-33-001080	EM-Tec TR2	Graphitised carbon black	Resolution	Holey C	Cu/300m

EM-Tec TR1 TEM resolution standard fine gold particle

The finely dispersed thin gold particles on a carbon film provide an excellent high resolution TEM standard. The gold particle size distribution is normally in the 2nm to 9nm range. Image quality, magnification and instrument stability are readily determined. For resolution assessment, this standard offers a choice of crystalline orientation on static or low tilt stages. The thickness of the crystals can be calculated form the projected shape of the gold crystal. The background noise from the structure of the carbon support film helps in determining the operating transfer function.

EM-Tec TR2 TEM resolution standard graphitised carbon black

Graphitised carbon black provides a stable resolution standard for TEM resolution testing. The graphitised carbon black particles exhibit lattice planes following the contours of the particles. Lattice plane distance is 0.34nm. Supplied on a holey carbon film on a copper TEM grid

EM-Tec TS1 TEM test standard perforated carbon film

The perforated (holey) carbon film is used for TEM performance checks, especially astigmatism correction. Best used at magnifications up to 250,000x. The perforated carbon film is mounted on a 400 mesh Cu TEM grid.

EM-Tec TS2 TEM test standard evaporated Pt/Ir

This TEM test standard provides Platinum/Iridium particles evaporated on a holey carbon film. The holes in the carbon film are useful for focussing and astigmatism corrections. The small crystals of Pt/Ir provide excellent high contrast particles for resolution checks using the point separation test. Provided on a 300 mesh Cu TEM grid.

EM-Tec TS3 TEM combined test specimen standard

The combined test specimen standard provides a 3 in 1 method for testing the performance of the TEM. The combined test specimen consists of graphitised carbon particles on a holey carbon which are shadowed with gold. Combines astigmatism test using perforated carbon film with resolution tests using graphitised carbon black and fine gold particles. The evaporated gold forms small polycrystalline islands in which lattice fringes can be resolved. The combined test specimen can also be used for contamination measurements by noting the carbon depositing rate within the holes of the gold film. Mounted on a 300 mesh copper TEM grid.

EM-Tec TC2 TEM calibration standard evaporated Al

The aluminum film of around 30nm is used for calculating the value of the camera length. The small Al crystals provide a well defined diffraction pattern. The Al film is evaporated on a holey carbon on a 400 mesh Cu TEM grid.

EM-Tec TC3 TEM EDX calibration standard Cu foil on Al grid

A thin copper foil on an aluminum TEM grid provides well defined and separated lines of Al (K-line) and Cu (K- and L-lines) in an EDX spectrum. These lines can be used to calibrate the EDX spectrometer and to asses EDX detector efficiency. The carbon coated 60nm Cu foil is mounted on a 200 mesh aluminium TEM grid.