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We introduce a method to realize closed single-walled semiconductor microtubes. By applying a novel interlocking mechanism to the method of self-rolling strained bilayers we are able to fabricate closed InGaAs/GaAs-microtubes with precisely tuneable parameters. Such 3D objects are promising candidates for the realization of different kinds of free-standing optical resonators.
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Mendach et al. (2005) studied this question.
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