Patent ID: 8603884

Claim:
A method of fabricating a substrate, comprising: forming spaced first features over a substrate; forming anisotropically etched spacers on sidewalls of the spaced first features; removing the spaced first features from the substrate and forming spaced second features which comprise the spacers; depositing a first material over the spaced second features which is of some different composition from that of the spaced second features, the first material having a non-planar outermost surface; depositing a second material over the first material, the second material being of some different composition from that of the first material and from that of the spaced second features, the second material having a planar outermost surface; removing only a portion of the second material to expose the first material and form spaced second material received over the first material; and after forming the spaced second material, etching the first material from between the spaced second material and forming spaced third features which comprise spaced second material received over first material, the third features being spaced from the second features.