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PELCO® Hydrophilic and Hydrophobic Silicon Nitride Membrane Surfaces
PELCO®亲水性和疏水性氮化硅膜表面15nm, 50nm and 200nm membrane thickness
Silicon Nitride membranes have been modified using Atomic Layer-Deposited (ALD) techniques to change their surface properties. Depending on the process used, both Hydrophilic and Hydrophobic substrates have been created with the following advantages:
Hydrophilic surfaces enhance wetting and dispersion of aqueous solutions. This avoids particle aggregation effects commonly observed on less hydrophilic surfaces. Particularly useful in water based sols and life science applications. |
|
Both coatings are available on 50nm and 200nm Silicon Nitride Membranes with a 0.5 x 0.5mm window and 15nm Si3N4 membrane with 9 each 0.1x0.1nm windows on a 200µm silicon frame with a diameter of 3mm, compatible with all standard TEM grid holders. Both sides of the membrane and frame are coated. We advise to handle the discs by gripping at the edge. |
Specifications:
- Hydrophilic: 5nm atomic layer-deposited hydroxylated alumina on 15, 50 and 200nm ultra-low-stress silicon nitride membrane
- Hydrophobic: 5nm atomic layer-deposited alumina and fluoro-methyl-silane on 15, 50 and 200nm ultra-low-stress silicon nitride membrane
- Surface Energy:
Surface | Surface Energy (mJ/m2) | Standard Deviation |
Silicon Nitride Membrane | 46.1 | 4.3 |
Hydrophilic Coating | 76.1 | 2.2 |
Hydrophobic Coating | 24.6 | 4.4 |
mj= millijoules |
- Surface Roughness:
Surface | Surface Roughness (nm) | Standard Deviation |
Silicon Nitride Membrane |
Rq=0.65 Ra=0.45 |
0.06 0.02 |
Hydrophilic Coating |
Rq=0.57 Ra=0.40 |
0.04 0.03 |
Hydrophobic Coating |
Rq=0.66 Ra=0.40 |
0.03 0.05 |
Rq= Surface Roughness; Ra= Roughness Average |
- Film Thickness: Resilient, low stress 15, 50 and 200nm, giving rise to minimum absorption to enable clear imaging
- Window Sizes: Array of 9 ea. 0.1 x 0.1mm and 0.5x0.5mm
- Frame Thickness: Silicon support structure is 200µm standard.
- Frame Diameter: EM standard 3mm diameter disc, fully compatible with standard TEM holders (no broken edges)
- EasyGrip™ Edges for easy handling with tweezers
- Packaging: The PELCO® Silicon Nitride Support Films are packaged under cleanroom conditions in the PELCO® #160 TEM Grid Storage box. Each box holds 10 support films.
Prod # |
Description |
Unit |
21553-10 |
PELCO® Hydrophilic 15nm Silicon Nitride Membrane, 9 ea. 0.1x0.1mm Windows |
pkg/10 |
21550-10 |
PELCO® Hydrophilic 50nm Silicon Nitride Membrane, 0.5x0.5mm Window |
pkg/10 |
21551-10 |
PELCO® Hydrophilic 200nm Silicon Nitride Membrane, 0.5x0.5mm Window |
pkg/10 |
21593-10 |
PELCO® Hydrophobic 15nm Silicon Nitride Membrane, 9 ea. 0.1x0.1mm Windows |
pkg/10 |
21552-10 |
PELCO® Hydrophobic 50nm Silicon Nitride Membrane, 0.5x0.5mm Window |
pkg/10 |
21591-10 |
PELCO® Hydrophobic 200nm Silicon Nitride Membrane, 0.5x0.5mm Window |
pkg/10 |
21597-10 |
Silicon Nitride Assortment Pack (10 different membranes) |
each |