Method for grafting a chemical compound to a support substrate

Method according to any of the preceding claims, characterized in that

• the properties of the predetermined region are controlled in dependency of the parameters of the irradiating step.

Method according to any of the preceding claims, characterized in that

• the support substrate (2) is chosen in the dependency of at least one property of the group containing desired reactive functional group or a precursor thereof, desired property of the support substrate and desired property of the non-irradiated regions.

Method according to any of the preceding claims, characterized in that

• the reactive functional group is at least one selected from the group comprising hydroperoxides, peroxides, or any type of radicals such as alkyl radical, oxy radical and peroxy radical.

Method according to any of the preceding claims, characterized in that

• UV or X-ray radiation is used as electromagnetical radiation.

Method according to any of the preceding claims, characterized in that

• electron beam is used as particle radiation.

Method according to any of the preceding claims, characterized in that

• the compound or the predecessor of the compound is an organic monomer that is applied in form of a gas comprising the monomer or a liquid comprising the monomer to the predetermined region.

Method according to any of the preceding claims, characterized in that

• the predetermined regions formed in the shape of a three dimensional tube or channel.

Method according to any of the preceding claims, characterized in that

• the grafted material is detached from the support substrate or the support substrate is dissolved leading to free standing structures of the grafted material.

A material comprising a polymer substrate having at least one region of grafted polymer,

• wherein at least one lateral dimension of said region is between about 1 nanometer and about 5 micrometers.

A material comprising a polymer substrate having at least one region of grafted polymer,

• wherein the height of said region is between about 1 nanometer and about 5 micrometers.

A material comprising a polymer substrate having at least one region of grafted polymer,

• wherein the height of said region is between about 1 nanometer and about 1 micrometer.

A material comprising a polymer substrate having at least one region of grafted polymer,

• wherein the height of said region is between about 1 nanometer and about 500 nanometers.