Active and Nonlinear Artificial Impedance Surfaces

目的：研制新型非线性有源人工阻抗表面。这代表了一个新的研究领域，有可能显着扩大人工介质的能力，并克服目前的无源阻抗表面的局限性。该计划将涉及研究的各个方面，从概念开发和模拟到制造和测量。智力优点：其智力上的优点是，有源和非线性表面的发展将扩大人类的知识，包括非线性表面波效应，以及通过使用嵌入在周期性结构中的有源电子器件表面波的超光速传播。这一提议是变革性的，因为这些结构将在一定的尺寸和频率范围内展示独特的新现象，这些尺寸和频率范围适合直接探测电场，以全面检查潜在的物理学。在未来，这些概念也可以扩展到其他制度，如光学表面，包括活性或非线性材料。更广泛的影响：更广泛的影响是，该计划将涉及新的外联工作，以历史上代表性不足的群体，以及K-12学生，以激励他们追求工程高等教育。这项推广工作将通过协调与工程IDEA（包容性，多样性，卓越性和进步）中心的UCSD雅各布学院。PI将承诺与该中心合作，从历史上代表性不足的群体中确定潜在格拉德生，并确定机会，以促进这项研究的兴奋K-12学生。

Objective: The objective of this program is to develop new nonlinear and active artificial impedance surfaces. This represents a new research area with the potential to significantly expand the capabilities of artificial media, and overcome the limitations of current passive impedance surfaces. This program will involve all aspects of research, from conceptual development and simulations to fabrication and measurements. Intellectual merit: The intellectual merit is that the development of active and nonlinear surfaces will expand human knowledge to include nonlinear surface wave effects, as well as superluminal propagation of surface waves through the use of active electronics embedded in periodic structures. This proposal is transformative in that these structures will demonstrate unique new phenomena at a size and frequency scale that is amenable to direct probing of the electric field to enable full examination of the underlying physics. In the future, these concepts can also be extended to other regimes such as optical surfaces that include active or nonlinear materials. Broader impacts: The broader impacts are that this program will involve new outreach efforts to historically underrepresented groups, as well as K-12 students to motivate them to pursue higher education in engineering. This outreach effort will be through coordination with the UCSD Jacobs School of Engineering IDEA (Inclusion, Diversity, Excellence, and Advancement) Center. The PI will pledge to work with the center to identify potential grad students from historically underrepresented groups, and to identify opportunities to promote the excitement of this research to K-12 students.