METAMATERIALS & METASURFACES
Metamaterials (from the Greek word μετά meta, meaning “beyond”) are a kind of artificial material engineered to have properties that are not found in nature. They are made from assemblies of multiple elements fashioned from composite materials such as metals or dielectrics. The materials are usually arranged in repeating patterns, at scales that are significantly smaller than the wavelengths of the phenomena they influence. Metamaterials derive their properties from their newly designed structures rather than the properties of the base materials. Their precise shape, geometry, size, orientation and arrangement give them smart properties capable of manipulating electromagnetic waves by blocking, absorbing, enhancing, or bending waves, to achieve benefits that go beyond what is possible with conventional materials.
Elaborately designed metamaterials can affect waves of electromagnetic radiation in a manner not observed in bulk materials. Potential applications of metamaterials are diverse and include optical/electromagnetic filters, medical devices, remote aerospace applications, sensor detection and infrastructure monitoring, smart solar power management, crowd control, high-frequency battlefield communication, and lenses for high-gain antennas. The research of metamaterials is interdisciplinary and involves such fields as electrical engineering, electromagnetics, classical optics, solid state physics, microwave and antenna engineering, optoelectronics, material sciences, nanoscience and semiconductor engineering.
METAMATERIAL ANTENNAS
Metamaterial antennas are a class of antennas which use metamaterials for enhancing the performances of antenna systems, including miniaturization, gain, directionality, et al. Their purpose, as with any electromagnetic antenna, is to launch energy into free space. However, this class of antenna incorporates metamaterials, which are materials engineered with novel, often microscopic, structures to produce unusual physical properties. Antenna designs incorporating metamaterials can step-up the antenna's radiated power. Conventional antennas that are very small compared to the wavelength reflect most of the signal back to the source. A metamaterial antenna behaves as if it were much larger than its actual size, because its novel structure stores and re-radiates energy. Established lithography techniques can be used to print metamaterial elements on a PC board.These novel antennas aid applications such as portable interaction with satellites, wide angle beam steering, emergency communications devices, micro-sensors and portable ground-penetrating radars to search for geophysical features. Some applications for metamaterial antennas are wireless communication, space communications, GPS, satellites, space vehicle navigation and airplanes.
PLASMONICS & NANO ANTENNAS
In metals, light can couple to electrons to form a wave that is bound to the surface of the metal. This wave is called the surface plasmon. The surface plasmon mode is generally characterized by intense fields that decay quickly away from the interface between the metal and the surrounding environment. Surface plasmons display very important properties, including strongly enhanced local fields; tremendous sensitivity to changes in the local environment; and the ability to localize energy to tiny volumes not restricted by the wavelength of the exciting light.
Due to their unique properties, plasmons have found a broad range of applications in various areas of science. In chemistry and biology for example, the sensitivity of surface plasmons is used as the basis for powerful chemical and biochemical detectors that can monitor molecular binding events. In optics, the large field strengths of surface plasmons can dramatically enhance a variety of phenomena such as Raman scattering and light transmission through sub-wavelength apertures. In addition, the size of certain surface plasmonic configurations can be smaller than the wavelength of the exciting light, thus offering a path to scaling the sizes of optical components to below the diffraction limit.
科研项目：
12. 航天八院产学研合作项目 2024.01-2025.12，负责人
11. 国家自然科学基金面上项目 （项目编号：62071291）2021.01-2024.12，负责人
10. 鸿鹊创新中心2022年度开放基金 2023.01-2023.12，负责人
9. 哈尔滨工业大学技术合作项目 2022.01-2022.04，负责人
8. 中船-交大前瞻基金，2021.01-2022.12，负责人
7. 上海航天电子有限公司技术合作项目 2020.07-2021.5，负责人
6. 华为技术有限公司技术合作项目 2020.04-2021.4，负责人
5. 航天科学技术基金 2020.01-2020.12，负责人
4. 国家自然科学基金面上项目 （项目编号：51777168）2018.01-2021.12，合作单位负责人
3. 国家自然科学基金青年项目 （项目编号：61701303）2018.01-2020.12，负责人
2. 上海市浦江人才计划 （项目编号：17PJ1404100），2017.07-2019.06，负责人
1. 上海市自然科学基金 （项目编号：17ZR1414300），2017.05-2020.04，负责人