Invention and further development of lasers brought into consideration many practical applications, which changed our life quite significantly. One of the remarkable phenomena with far going outcome is the ability to manipulate mechanical motion of small objects with focused laser beams. The field of optical tweezing, pioneered by A. Ashkin back at 1970, quickly became one of the widely used tools in biophysical research and many other areas. The ability to control mechanical path of small objects on demand opens a room for variety of novel investigations. My report is focused at a way for achieving another degree of freedom in optical manipulation and takes it towards flexible manipulation of nanoscale objects. In particular, auxiliary substrates were considered and their impact on optical forces was analyzed. Surface waves, supported by metal substrates were shown to tailor optical forces with remarkable property of switchable repulsion and attraction. Highly accurate size-dependent sorting of nano-scale particles was proposed. The interplay of optical trapping and anti-trapping enables achieving 1nm resolution in sorting-based applications. Optical binding of two nanoparticles at plasmonic substrate improves particle localization in dimer configuration several times. Particles can be bound on distances close to diffraction limit and SPP waves strongly influence dimer axis orientation. Another substrate which will be considered for optomechanical applications is multilayer stack which supports hyperbolic modes. Hyperbolic substrates allow for operation in a broad wavelength range. Almost any metal can comprise multilayer because volume modes are less affected by material losses. Elegant analytical theory and its application to different systems paves the way to use uniform and nanostructured substrates for opto-mechanical applications.