Excitation, scattering, and steering of acoustic waves with plasmonic nanostructures

等离子体纳米结构声波的激发、散射和转向

• 批准号: 465118501
• 负责人: Professor Dr. Leonardo de Souza Menezes, Ph.D., since 1/2024
• 金额: --
• 依托单位: Russian Science Foundation
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/465118501?language=en
• 关键词: Excitation; scattering; steering; acoustic; waves

Our proposed project aims to translate concepts developed in nanophotonics to nanoacoustics, in order to achieve novel means of control over nanoacoustic resonators and the propagation of surface acoustic waves (SAWs). For this we will utilize plasmonic nanoantennas excited optically by ultrashort laser pulses as a means to transduce from electromagnetic field energy to mechanical oscillations. The concept of nanoantennas has been actively developed in recent years in nanophotonics and nanoplasmonics, for efficient directional excitation of surface electromagnetic waves (SEWs), but for SAWs it has been studied much less. We will therefore comprehensively investigate the translation of state-of-the-art and timely nanophotonic phenomena to nanoacoustics, enabling new applications of SAWs in acousto-optics and sensing. The work program is divided into three work packages: acoustic properties of individual plasmonic nanoparticles (WP1); plasmonic nanoantennas for efficient and directional launching of SAWs (WP2); plasmonic acoustic nanoantennas for biosensing (WP3). The specific tasks of the proposed research project include: engineering of high-Q acoustic nanoresonators, in particular nanoresonators supporting bound states in the continuum; the development of a multipole approach, group theory methods, and a Green function formalism for acoustic nanoresonators on the substrate supporting SAWs; development of the acoustic Purcell effect and implementation of the strong-coupling regime between two acoustic nanoresonators; theoretical and experimental studies of anapole and Kerker effects; directional launching of SAWs with nanoantennas; study of the recoil force acting on an nanoantenna as a result of the directional excitation of SAWs; implementation of mass loading sensors based on a single acoustic nanoresonators. The joint ITMO-LMU team includes highly qualified theoreticians and experimentalists. They are capable to carry out the full cycle of scientific research described in our work programme. Apart from the scientific goals of the project, its successful implementation will help to transfer knowledge, developed methods and technologies between LMU and ITMO, supporting Russian-German scientific relations. Such a collaboration will be very important for young scientists involved in the project as it will help to develop and promote their careers and integrate them into the international scientific community.The combination of the scientific group’s experience in the implementation of large international projects, the comprehensive research plan, necessary equipment, rich scientific background, allows us to be confident that all formulated tasks will be fully addressed, the results will be published in top-ranked scientific journals and they will be of high interest of the international scientific communities of both nanophotonics and nanoacoustics.

我们提出的项目旨在将纳米光子学中开发的概念转化为纳米声学，以实现控制纳米声学谐振器和表面声波（SAW）传播的新方法。为此，我们将利用由超短激光脉冲光学激发的等离子体纳米天线作为从电磁场能量转换为机械振荡的手段。纳米天线的概念近年来在纳米光子学和纳米等离子体学中得到了积极的发展，以有效地定向激发表面电磁波（SEWs），但对于SAW，它的研究要少得多。因此，我们将全面研究最先进的和及时的纳米光子现象到纳米声学的翻译，使SAW在声光和传感的新应用。该工作计划分为三个工作包：单个等离子体纳米颗粒的声学特性（WP 1）;用于SAW的高效和定向发射的等离子体纳米天线（WP 2）;用于生物传感的等离子体声学纳米天线（WP 3）。 拟议的研究项目的具体任务包括：高Q声学纳米谐振器的工程，特别是支持连续体中的束缚态的纳米谐振器;多极方法，群论方法和支持SAW的衬底上的声学纳米谐振器的绿色函数形式主义的发展;声学珀塞尔效应的发展和两个声学纳米谐振器之间的强耦合制度的实施; Anapole和Kerker效应的理论和实验研究;用纳米天线定向发射SAW;作为SAW定向激励结果的作用在纳米天线上的反冲力的研究;基于单个声学纳米谐振器的质量负载传感器的实现。 ITMO-LMU联合团队包括高素质的理论家和实验家。 他们有能力开展我们工作方案中所述的整个科学研究周期。除了该项目的科学目标外，该项目的成功实施将有助于在LMU和ITMO之间转让知识，开发方法和技术，支持俄罗斯和德国的科学关系。这种合作对参与该项目的年轻科学家来说非常重要，因为它有助于发展和促进他们的职业生涯，并使他们融入国际科学界。科学小组在实施大型国际项目方面的经验，全面的研究计划，必要的设备，丰富的科学背景，使我们有信心，所有制定的任务将得到充分解决，结果将发表在顶级科学期刊上，它们将引起国际纳米光子学和纳米声学科学界的高度兴趣。