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WIDE ANALYSIS OF LOW-ENERGY PLASMONICALLY-POWERED CASCADED DYNAMICS IN LIQUIDS

液体中低能等离子体驱动的级联动力学的广泛分析

基本信息

批准号：
1921034
负责人：
Luat Vuong
金额：
$ 38.85万
依托单位：
University of California-Riverside
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2023-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1921034&HistoricalAwards=false
关键词：
WIDE ANALYSIS LOW ENERGY PLASMONICALLY

项目摘要

Nontechnical description: Surface plasmons are collective oscillations of electrons at the interface between a metal and an insulator. In the physical, biomedical, and environmental sciences, metal nanomaterials are well-known to absorb and concentrate light through plasmonic effects. The energy from surface plasmons has been shown to power a variety of novel chemical, thermal, electrical and mechanical phenomena. This project addresses recent observations of plasmonic interactions in liquid-dispersed metal nanoparticles onto which weak magnetic fields are applied. Results from this study explain how the energy of plasmons is transferred to their surrounding environment, and thus relate to profound environmental, biological, and physiological effects. Interdisciplinary and data-intensive research activities provide versatile technical training for future science professionals. The principal investigator is also actively engaged in teaching in New York City public high school College Now! programs, mentoring high school students who have successfully advanced to the Intel International Science and Engineering Fair, and organizing a new discussion-centered Research Conference in Hong Kong, with the aim of accelerating and disseminating knowledge of plasmon energy transfer.Technical description: The project is centered on understanding the longer-lived light-induced changes in plasmonically-absorbing nanofluids, particularly those that result from the simultaneous illumination of low-intensity light and static magnetic fields. The formation of vapor around nanoparticles is studied, and the dynamics of the vapor-encased nanoparticles are imaged, enabling transformative analytical models of the multi-phase hydrodynamics. The dovetailed study of the near-field and far-field behaviors is essential for designing future optical probes and interpreting the optical response of nanofluids. The principal investigator also characterizes the novel thermophoretic, thermoelectric, and electrokinetic behavior of bulk nanofluids by analyzing the near-field behavior of plasmonic 2D substrates surrounded by liquids. The wide analysis and approach may pinpoint elusive and anomalous behaviors associated with plasmons to explain the observed critical nucleation of dissolved gasses in liquids on plasmonic surfaces, which is currently not understood.

表面等离子体激元是电子在金属和绝缘体之间的界面处的集体振荡。在物理，生物医学和环境科学中，金属纳米材料众所周知可以通过等离子体效应吸收和聚集光。来自表面等离子体激元的能量已被证明为各种新颖的化学、热、电和机械现象提供动力。该项目解决了最近对施加弱磁场的液体分散金属纳米颗粒中等离子体相互作用的观察。这项研究的结果解释了等离子体激元的能量是如何转移到周围环境中的，因此与深刻的环境，生物和生理效应有关。跨学科和数据密集型的研究活动为未来的科学专业人员提供了多方面的技术培训。主要研究者还积极从事教学在纽约市公立高中大学现在！计划，指导成功晋级英特尔国际科学与工程博览会的高中生，并在香港组织一个新的以讨论为中心的研究会议，旨在加速和传播等离子体能量转移的知识。技术描述：该项目的重点是了解等离子体吸收纳米流体中寿命较长的光诱导变化，特别是由低强度光和静磁场的同时照射产生的那些。研究了纳米颗粒周围蒸汽的形成，并对蒸汽包裹的纳米颗粒的动力学进行了成像，从而实现了多相流体动力学的变革性分析模型。对纳米流体近场和远场特性的研究对于设计未来的光学探针和解释纳米流体的光学响应是必不可少的。主要研究者还通过分析被液体包围的等离子体二维基板的近场行为来表征散装纳米流体的新型热泳，热电和电动行为。广泛的分析和方法可以精确定位与等离子体激元相关的难以捉摸的和异常的行为，以解释在等离子体激元表面上的液体中溶解气体的观察到的临界成核，这是目前不理解的。

项目成果

期刊论文数量（11）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Nonequilibrum phase transition in the light-actuated self-assembly of nanoparticles: effects of surfaces and stochastic forces

DOI：
10.1117/12.2528987
发表时间：
2019-09
期刊：
影响因子：
0
作者：
H. Ji;R. Collison;Daniel Thomas;L. Vuong
通讯作者：
H. Ji;R. Collison;Daniel Thomas;L. Vuong

Enhanced Inverse Faraday Effect in Nonmagnetic Plasmonic Monolayers of Nanodisks

纳米盘非磁性等离子体单层中增强的逆法拉第效应

DOI：
10.1364/cleo_fs.2023.ftu4c.7
发表时间：
2023
期刊：
Optica Publishing Group
影响因子：
0
作者：
González-Alcalde, Alma K.;Ortiz, Víctor H.;Shi, Xinping;Feng, Ji;Wilson, Richard B.;Vuong, Luat T.
通讯作者：
Vuong, Luat T.

Compact setup for SIMO measurements of slab interconnects and correlation with PEDOT:PSS nanostructure morphology

用于板互连 SIMO 测量的紧凑装置以及与 PEDOT:PSS 纳米结构形态的相关性