BIKAS:Bio-Inspired Knowledge Acquisition and Simulacrum-A Knowledge Database to Support Multifunctional Design Concept Generation

A detailed acquisition,analysis,and representation of biological systems exhibiting different functions is required to develop unique bio-inspired multifunctional conceptual designs and methods.This paper presents BIKAS:Bio-inspired Knowledge Acquisition and Simulacrum,a knowledge database of biological systems exhibiting various functionalities,developed based on case-based bio-inspired examples from literature.The knowledge database represents the biological features,their characteristics,and the function exhibited by the biological feature as a combination of its integrated structure and structural strategy.Furthermore,this knowledge database is utilized by the Expandable Domain Integrated Design(xDID)model that works on classifying,mapping,and representing biological features into their respective geometric designations called Domains.The combination of features from the Domains results in the generation of multifunctional conceptual designs.In addition,Meta-level design factors are proposed to aid designers in filtering the biological features and their respective functions having a similar structural strategy,thus aiding designers in rapidly selecting and emulating biological functions.

Multifunctional catalytic sites regulation of atomic-scale iridium on orthorhombic-CoSe_(2)for high efficiency dual-functional alkaline hydrogen evolution and organic degradation

The earth-abundant and high-performance catalysts are crucial for commercial implementation of hydrogen evolution reaction(HER).Herein,a multifunctional site strategy to construct excellent HER catalysts by incorporating iridium(Ir)ions on the atomic scale into orthorhombic-CoSe2(Ir-CoSe_(2))was reported.Outstanding hydrogen evolution activity in alkaline media such as a low overpotential of 48.7 mV at a current density of 10 mA cm^(-2)and better performance than commercial Pt/C catalysts at high current densities were found in the Ir-CoSe_(2) samples.In the experiments and theoretical calculations,it was revealed that Ir enabled CoSe_(2)to form multifunctional sites to synergistically catalyze alkaline HER by promoting the adsorption and dissociation of H_(2)O(Ir sites)and optimizing the binding energy for H^(*)on Co sites.It was noticeable that the electrolytic system comprising the Ir-CoSe_(2)electrode not only produced hydrogen efficiently via HER,but also degraded organic pollutants(Methylene blue).The cell voltage of the dual-function electrolytic system was 1.58 V at the benchmark current density of 50 mA cm^(-2),which was significantly lower than the conventional water splitting voltage.It was indicated that this method was a novel strategy for designing advanced HER electrocatalysts by constructing multifunctional catalytic sites for hydrogen production and organic degradation.

双目定位多功能机械臂系统设计

准确性、快速性与鲁棒性是机械臂系统设计的要求,经过研究提出一套新形式的机器人视觉系统,利用非接触式测量,对所操控单元进行位姿计算,完成操控单元的三维信息与机械臂执行单元进行命令交互。设计采用双目CMOS工业相机,通过Matlab进行相机标定并得到内外参数,然后进行立体校正,结合SGBM立体匹配算法解算出位置深度信息,进而对应帧的二维图像,利用OpenCV视觉算法获取操控器下端标志物的三维坐标,传递执行指令给机械部控制单元。由实验结果分析,在白光环境下该机器人系统同步现实功能展现出良好的跟随准确性,精度误差始终保持在4.5%以内,命令响应时间短,鲁棒性好。