A two-step method for constructing nanometre-scale architectural structures of nanoparticles on a solid surface is demonstrated. The method depends on physical processes between a colloid of nanoparticles and a hydrophobic surface that contains recess patterns. The effects of sedimentation of particles and of dewetting of the surface result in deposition of nanoparticles only within the patterns. This method has been used to generate spatially confined monolayers of nanoparticles, to assemble a small number of particles to each point of a 2D array and to construct 1D chains of interconnected particles on a surface. This versatile method can be used to generate architectural structures on a solid surface on various length scales.
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