Alumina Membranes

Aluminiumporen- selbstgeordnet

self orderd pores

Aluminiumporen - litographisch geordnet

lithographically ordered pores

Membrane properties

  • pore diameter adjustable from 25 nm to 400 nm
  • interpore distance of ordered structures 63 nm, 100 nm and 500 nm
  • standard deviation < 10%
  • flow-through membrane with symmetric pores
  • membranes with one-sided closed sack-like pores
  • pore depth of symmetric pores from several µm up to 200 µm
  • pore surface ratio adjustable with min. 10 %
  • hexagonal and cubic pore order
  • thermally stable up to 900 ºC (depending on environment)
  • functionalizable surface

Porengrößenverteilung einer Aluminiummembran

Example of pore size distribution of a self-ordered alumina pore structure