2021-01-20T08:36:09Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/386532019-03-15T05:20:32Zhdl_2115_20053hdl_2115_145A binary-decision-diagram-based two-bit arithmetic logic unit on a GaAs-based regular nanowire network with hexagonal topologyBDD-based 2-bit Arithmetic Logic Unit on GaAs-based Regular Nanowire Network with Hexagonal TopologyZhao, Hong-QuanKasai, SeiyaShiratori, YutaHashizume, TamotsuArithmetic logic unit (ALU)nanowire networkbinary decision diagram (BDD)Schottky wrap gate (WPG)GaAs549A 2-bit arithmetic logic unit (ALU) was successfully fabricated on a GaAs-based regular nanowire network with hexagonal topology. This fundamental building block of central processing units can be implemented on a regular nanowire network structure with simple circuit architecture based on graphical representation of logic functions using a binary decision diagram and topology control of the graph. The 4-instruction ALU was designed by integrating subgraphs representing each instruction, and the circuitry was implemented by transferring the logical graph structure to a GaAs-based nanowire network formed by electron beam lithography and wet chemical etching. A path switching function was implemented in nodes by Schottky wrap gate-control of nanowires. The fabricated circuit integrating 32 node devices exhibits correct output waveforms at room temperature allowing for threshold voltage variation.Journal Articleapplication/pdfhttp://hdl.handle.net/2115/38653https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/38653/1/nanotech.pdf0957-44841361-6528AA10863359Nanotechnology20242452032009-06-17enginfo:pmid/19468164info:doi/10.1088/0957-4484/20/24/245203This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at http://dx.doi.org/10.1088/0957-4484/20/24/245203.author