微波是整个电磁频谱非常重要的组成部分,可以与物质发生丰富的相互作用;而原子力显微术(Atomic Force Microscopy,AFM)有超高的空间分辨率,是纳米研究的核心工具。将微波技术与AFM结合将实现一种全新的扫描微波显微术(Scanning Microwav...微波是整个电磁频谱非常重要的组成部分,可以与物质发生丰富的相互作用;而原子力显微术(Atomic Force Microscopy,AFM)有超高的空间分辨率,是纳米研究的核心工具。将微波技术与AFM结合将实现一种全新的扫描微波显微术(Scanning Microwave Microscopy,SMM)。该技术可以探测各种样品(包括导体、半导体、绝缘体及其它新型材料)在微纳米尺度的多种电学性质,如载流子类型、介电常数、电导率和导磁系数等;以及实现微纳米尺度下微波探测技术,如NMR、ESR等,具有非常广阔的应用前景。文中综述了SMM的基本原理,仪器组成,并介绍了其在电学性质探测、各种新型材料、生物等方面的前沿应用实例。最后,文章展望了扫描微波显微术的进一步技术发展和应用研究。展开更多
Research on two-dimensional(2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since ...Research on two-dimensional(2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications. In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief backgroundintroduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials(PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field.展开更多
文摘微波是整个电磁频谱非常重要的组成部分,可以与物质发生丰富的相互作用;而原子力显微术(Atomic Force Microscopy,AFM)有超高的空间分辨率,是纳米研究的核心工具。将微波技术与AFM结合将实现一种全新的扫描微波显微术(Scanning Microwave Microscopy,SMM)。该技术可以探测各种样品(包括导体、半导体、绝缘体及其它新型材料)在微纳米尺度的多种电学性质,如载流子类型、介电常数、电导率和导磁系数等;以及实现微纳米尺度下微波探测技术,如NMR、ESR等,具有非常广阔的应用前景。文中综述了SMM的基本原理,仪器组成,并介绍了其在电学性质探测、各种新型材料、生物等方面的前沿应用实例。最后,文章展望了扫描微波显微术的进一步技术发展和应用研究。
文摘Research on two-dimensional(2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications. In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief backgroundintroduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials(PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field.
