Abstract— We have investigated the possibility of creating a unification platform for top-down systems and bottom-up structures, which is one of the most important issues for harvesting fruits of upcoming nano-technologies and nano-science together with those of Si- LSI-based information technologies. Under the device-approach, for unifying bottom-up and top-down systems, proposed is a functional device that has hierarchical structures grown, or is to have hierarchical structures grow, inside, not as a result of top-down designing but as a result of self-organization, i.e., a bottom-up structure-formation. Spiral heterostructure is of potential interest for providing us with one-dimensional superlattice structure that would serve as a bridge between top-down LSI systems with two-dimensional bottom-up structures. The spiral heterostructure is, also, of importance for enabling multi-striped orthogonal photon-photocarrier-propagation solar cell (MOP3SC). On the other hand, as a tool-based approach, for unifying bottom-up and top-down systems, clean unit system platform (CUSP) is developed. CUSP can realize dust- and microbe-free environment. The clean versatile environments having small footprint, low power-consumption and high cost-performance can be realized with CUSP for the next generation production system as well as for cross-disciplinary experiments. The approach for uniting bottom-up and top-down systems gives not only new devices but also clean platforms that would be able to serve as clean space for all of us.
Keywords— Top-down system, Bottom-up structure, device-based approach, spiral heterostructure, tool-based approach, clean unit system platform, CUSP.
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