You would want grids with support films, preferably carbon film or silicon monoxide film. You can prepare films by yourself or buy them from Electron Microscopy suppliers, for example from Pelco:

http://www.tedpella.com/Support_Films_html/Support_Films_and_Substrates_Overview.htm#ultrathin-carbon-holey

Generally prefer 'Ultrathin Carbon (

Hi Dear Reza Shokrani

The TEM grids with Lacy carbon coating can be used to allow maximum load and stabilize your powder samples on the grid. You can use solvents such as methanol or toluene to disperse NPs. However, it definitely depends on the apparatus you are using for imaging and the TEM expert preparing your sample.

Hi

Use carbon coated copper holey grid.

I have one query. In my synthesized composite both Cu and Ni elements are there. So which type of grid I can use for TEM?