The micromanipulation of mechanical and biological microobjects is important for many applications of basic and industrial research. In this paper, a critical analysis of the problems to be solved in order to reduce current limitations and to obtain better micromanipulation devices is presented. The main features of a workstation for micromanipulation of mechanical and biological objects which is being developed in the authors' laboratory are discussed and in particular the design, fabrication and performance of two different micro end-effectors are described and critically analysed.
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