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.

SmartPor

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 400 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 200 µm
  • Porosity adjustable starting from 10%
  • Thermal stable up to 1000 ºC (depending on the environment)

Standard Products

Interpore distancePore diameterPore length
65 nm25 nm50 µm or 100 µm
125 nm40 nm50 µm or 100 µm
480 nm180 nm50 µm or 100 µm

Data sheet

The data sheet PDF can be downloaded here.

FlexiPor

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 100 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]Pore length [µm]
0.02 13, 25, 47 60
0.1 13, 25, 47 60
0.2 13, 25, 47 60

Data Sheet FlexiPor

The data sheet PDF can be downloaded here.

QualiPor

The QualiPor membranes offer round pores with an unique pore diameter (deviation lower 5%) which stays constant through the complete length of the pores. The pores are arranged exact hexagonally over the complete surface due to a prestructuring step prior to the etching process.

This product is still in the development stage. Please send us a message if you wish to  receive news and updates regarding this product and the launch.