Artificial olfaction based on gas sensor arrays aims to substitute for, support, and surpass human olfaction. Like mammalian olfaction, a larger number of sensors and more signal processing are crucial for strengthening artificial olfaction. Due to rapid progress in computing capabilities and machine‐learning algorithms, on‐demand high‐performance artificial olfaction that can eclipse human olfaction becomes inevitable once diverse and versatile gas sensing materials are provided. Here, rational strategies to design a myriad of different semiconductor‐based chemiresistors and to grow gas sensing libraries enough to identify a wide range of odors and gases are reviewed, discussed, and suggested. Key approaches include the use of p‐type oxide semiconductors, multinary perovskite and spinel oxides, carbon‐based materials, metal chalcogenides, their heterostructures, as well as heterocomposites as distinctive sensing materials, the utilization of bilayer sensor design, the design of robust sensing materials, and the high‐throughput screening of sensing materials. In addition, the state‐of‐the‐art and key issues in the implementation of electronic noses are discussed. Finally, a perspective on chemiresistive sensing materials for next‐generation artificial olfaction is provided.

中文翻译：

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用于下一代人工嗅觉的基于半导体的化学电阻器及其库的合理设计。

基于气体传感器阵列的人工嗅觉旨在替代、支持和超越人类嗅觉。与哺乳动物的嗅觉一样，更多的传感器和更多的信号处理对于加强人工嗅觉至关重要。由于计算能力和机器学习算法的快速进步，一旦提供了多样化和多功能的气体传感材料，可以超越人类嗅觉的按需高性能人工嗅觉就变得不可避免。在这里，回顾、讨论和建议了设计无数不同的基于半导体的化学电阻器和发展足以识别各种气味和气体的气体传感库的合理策略。关键方法包括使用 p 型氧化物半导体、多元钙钛矿和尖晶石氧化物、碳基材料、金属硫属化物、它们的异质结构，以及作为独特传感材料的异质复合材料，双层传感器设计的利用，坚固的传感材料的设计，以及传感材料的高通量筛选。此外，还讨论了电子鼻实施中的最新技术和关键问题。最后，提供了用于下一代人工嗅觉的化学电阻传感材料的前景。