Multifunctional Optomechanics with Structured Material

具有结构材料的多功能光机械

• 批准号: 1927822
• 负责人: Kevin Webb
• 金额: $ 41.58万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1927822&HistoricalAwards=false
• 关键词: Multifunctional; Optomechanics; Structured; Material

The use of light to control mechanical systems is of broad importance in technology and science. However, planar mirrors experience an optical force only in the direction of the incident light. Consequently, to move such structures in the opposite direction requires a restoring force that may not exist or may not have suitable characteristics. More generally, being able to control the motion of material, depending on the spatial and spectral properties of the incident light, would offer impact in applications as diverse as optical communication and computing and molecular biology. The goal of this project is to investigate the relationship between the strength and direction of the optical force and the nanometer-scale arrangement of material from which the object is made. This is expected to lead to a new class of multi-functional optomechanical components that will allow, for example, remote and energy-efficient control for all-optical data networks, as well as actuators having a wavelength-dependent response. Also, more control over force and torque than exist with current laser beam tweezers will provide for new dimensions in molecular biology. In addition, the project should be important for propulsion because of the possible strength and regulation of the optical force imparted by a laser. Graduate and undergraduate students will be involved in the research and a learning module to excite young people to pursue studies in related disciplines will be developed.This project involves two research topics. The first is the development of a design methodology for optomechanical devices based on metal and dielectric structures that provide pushing (in the direction of the incident beam) and pulling (in the opposite direction) forces. Numerical field solutions yield force density in the material and hence the force and torque on the structure can be determined. This model provides a means for device design. While the primary focus is membrane implementation, generalized principles should ensue. The second topic is the experimental demonstration of key optomechanical device principles. Work with structured films on silicon nitride membranes will lead to implementation strategies with silicon films that will allow large-area devices. The experiments will evaluate pushing and pulling forces, and investigate ways to use the same structure to realize bidirectional forces based on the character of the control light (most simply, wavelength, but potentially the spatial control of the incident light).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

利用光来控制机械系统在科学技术中具有广泛的重要性。然而，平面镜仅在入射光的方向上受到光学力。因此，在相反方向上移动这样的结构需要可能不存在或可能不具有合适特性的恢复力。更一般地说，能够根据入射光的空间和光谱特性控制材料的运动，将在光通信、计算和分子生物学等各种应用中产生影响。该项目的目标是研究光学力的强度和方向与制造物体的材料的纳米级排列之间的关系。预计这将导致一类新的多功能光机械组件，例如，允许对全光数据网络进行远程和节能控制，以及具有波长相关响应的致动器。此外，对力和扭矩的更多控制比现有的激光束镊子将提供分子生物学的新维度。此外，该项目应该是重要的推进，因为可能的强度和调节的光学力赋予激光。研究生和本科生将参与研究，并将开发一个学习模块，以激发年轻人在相关学科中学习。第一个是基于金属和介电结构的光机械器件的设计方法的开发，该结构提供推力（在入射光束的方向上）和拉力（在相反方向上）。数值场解产生材料中的力密度，因此可以确定结构上的力和扭矩。该模型为器件设计提供了一种方法。虽然主要的焦点是膜的实现，一般的原则应该随之而来。第二个课题是光机器件关键原理的实验演示。在氮化硅薄膜上的结构化薄膜的工作将导致硅薄膜的实施策略，这将允许大面积的设备。该实验将评估推力和拉力，并研究如何使用相同的结构来实现基于控制光的特性（最简单的是波长，但可能是入射光的空间控制）的双向力。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估而被认为值得支持。

项目成果

Boundary condition for the optical force density

光力密度的边界条件

• DOI: 10.1103/physrevb.106.155423
• 发表时间: 2022
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Webb, Kevin J.

Pushing and pulling optical pressure control with plasmonic surface waves

利用等离子体表面波推拉光学压力控制

• DOI: 10.1103/physrevb.103.245124
• 发表时间: 2021
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Yang, Li-Fan;Webb, Kevin J.
• 通讯作者: Webb, Kevin J.

Pushing and Pulling Optomechanics with Plasmonic SurfaceWaves

利用等离激元表面波的推拉光力学

• 发表时间: 2020
• 期刊: Conference on Lasers and Electrooptics
• 作者: Yang, Li-Fan;webb, Kevin J.
• 通讯作者: webb, Kevin J.