Zhijian Pan

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A novel 3D printing method for voxel-by-voxel metal printing is presented. Hollow atomic force microscopy (AFM) cantilevers are used to locally supply metal ions in an electrochemical cell, enabling a localized electroplating reaction. By exploiting the deflection feedback of these probes, electrochemical 3D metal printing is, for the first time,(More)
Cellular automata models have historically been a major approach to studying the information-processing properties of self-replication. Here we explore the feasibility of adopting genetic programming so that, when it is given a fairly arbitrary initial cellular automata configuration, it will automatically generate a set of rules that make the given(More)
In this paper we describe our recent use of genetic programming methods to automatically discover CA rule sets that produce self-replication of arbitrary given structures. Our initial results have produced larger, more rapidly replicating structures than past evolutionary models while requiring only a small fraction of the computational time needed in past(More)
We recently formulated an approach to representing structures in cellular automata (CA) spaces, and the rules that govern cell state changes, that is amenable to manipulation by genetic programming (GP). Using this approach, it is possible to efficiently generate self-replicating configurations for fairly arbitrary initial structures. Here, we investigate(More)
In this paper, a novel receiver architecture with inductor-noise cancellation technique is presented. The proposed receiver employs two separate down-conversion paths driven by I/Q LOs respectively, and the noise of on-chip gate inductor of common-source LNA is cancelled at the baseband output, without additional penalty on power consumption, while the(More)
Although automatic optimization for individual analog/RF modules has been studied for many years, design automation for analog/RF systems that contain a complicated hierarchy of mixed-signal modules is still very challenging as the lack of an efficient way to bridge between different level descriptions in the design hierarchy. In this paper, we applied(More)
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