Nanoporous alumina
Nanoporous alumina is a ceramic material fabricated by means of an electrochemical etching process of pure aluminum. The material can be used directly as transparent or white (depending on the pore diameter) membrane or as a one-side-closed template for the formation of nanostructures. The product is an amorphous oxide which can be changed to a crystalline structure by heating up. The pore diameter can be adjusted exactly within a nanometer scale.
The SmartPor membranes offer round pores with an unique pore diameter (deviation lower 10%) which stays constant through the complete length of the pores. The pores are arranged hexagonally within the single grains of the aluminum.
For further information please use our request form.
Material Properties
- Pore diameter adjustable from 25 nm up to 90 nm and from 180 nm up to 380 nm
- Interpore distance (fix): 65 nm, 125 nm or 480 nm
- Standard deviation < 10%
- Flow-through-membrane with symmetric pores
- Porous ceramics with one-side-closed pores (also on aluminum)
- Pore depth from 200 nm up to 130 µm
- Porosity adjustable starting from 10%
- Thermal stable up to 1000 ºC (depending on the environment)
Standard Products
| Interpore distance | Pore diameter | Pore length |
|---|---|---|
| 65 nm | 25 nm | 50 µm or 100 µm |
| 125 nm | 40 nm | 50 µm or 100 µm |
| 480 nm | 180 nm | 50 µm or 100 µm |
Download SmartPor
The Factsheet PDF can be downloaded here.
The Safety Data Sheet (SDS) PDF can be downloaded here.
The FlexiPor membranes have two different sides. The top side features bigger pore diameters which stay constant through the length of the pores. The effective filtration limitation is regulated by the bottom side of the membrane. The opening of the pores are smaller here and can be adjusted to the needs of the customer.
For further information please use our request form.
Material Properties
- Pore diameter adjustable from 20 nm up to 200 nm
- Standard deviation ≤ 25%
- Flow-though-membrane
- Pore depth customized from 30 µm up to 80 µm (Standard 60 µm)
- Thermal stable up to 1000ºC (depending on the environment)
- Functionalization of the surface possible
Standard Products
| Mean pore diameter [µm] | Membrane size Ø [mm] | Thickness [µm] |
|---|---|---|
| 0.02 | 13, 25, 47 | 60 |
| 0.1 | 13, 25, 47 | 60 |
| 0.2 | 13, 25, 47 | 60 |
Data Sheet FlexiPor
The Factsheet PDF can be downloaded here.
