Acquisition of Instrumentation for the Study of Nonlinear Nanoscale Localization and for Student Training

购置用于非线性纳米尺度定位研究和学生培训的仪器

• 批准号: 0075930
• 负责人: Albert Sievers
• 金额: $ 9.17万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0075930&HistoricalAwards=false
• 关键词: Acquisition; Instrumentation; Study; Nonlinear; Nanoscale

This is an award to Cornell University for the acquisition of instrumentation to study nonlinear nanoscale localization and student training. A pump-probe broad band spectrometer with associated detectors will be purchased to build a new experimental platform for the production and investigation of intrinsic nonlinear nanoscale localization of spin waves in both classical and quantum antiferromagnets. This instrument will make possible both the production of intrinsic localized spin waves in C(2)CuCl4 and other antiferromagnets over a large frequency region. It will also permit time dependent and transport studies of these nanoscale objects down to the milliseconds and sub-milliseconds time regimes. Both the high power and the large tuning range are essential features of this specialized instrumentation for the experimental investigation of a new fundamental nanoscale localization phenomenon in condensed matter physics. The general physical feature that such localization in periodic lattices depends only on nonlinearity plus discreteness ensures that graduate and undergraduate students working in this area will have training in nonlinear dynamics with applications spanning a variety of length scales, ranging from the nano- to the macroscopic ones.This is an award to Cornell University for the acquisition of instrumentation to study nonlinear nanoscale localization and student training. This experimental instrumentation is directed at probing the underlying simplicity of the dynamics of nonlinear periodic physical systems by exploring large amplitude nanoscale excitations in atomic lattices. The work is expected to influence other developing areas of nonlinear dynamics including intrinsic localized electromagnetic modes in optical switches in nonlinear photonic crystal waveguides, intrinsic localization in periodic Josephson junction arrays, mechanical localization in micro-electrical-mechanical systems, acoustic localization of energy in an air filled tube with a periodic array of resonators and, at the largest scale, the nonlinear localization within multibunch modes in high energy accelerators. Graduate and undergraduate students working in this new research area will have training in condensed matter nonlinear dynamics with applications involving technologically important length scales.

这是康奈尔大学获得用于研究非线性纳米尺度定位和学生培训的仪器的奖项。我们将购买一台带相关探测器的泵浦探针宽带光谱仪，为经典和量子反铁磁体中自旋波的本征非线性纳米局域化的产生和研究建立一个新的实验平台。该仪器将使C(2)CuCl4和其他反铁磁体在大频率区域内产生本征局域自旋波成为可能。它还将允许对这些纳米级物体进行时间依赖和传输研究，并将其降低到毫秒级和亚毫秒级的时间范围。高功率和大调谐范围是该专用仪器用于凝聚态物理中一种新的基本纳米级局域化现象的实验研究的基本特征。周期格中的这种局部化的一般物理特征仅取决于非线性和离散性，这确保了在该领域工作的研究生和本科生将接受非线性动力学的训练，其应用范围涵盖从纳米到宏观的各种长度尺度。这是康奈尔大学获得用于研究非线性纳米尺度定位和学生培训的仪器的奖项。该实验仪器旨在通过探索原子晶格中的大振幅纳米级激发来探测非线性周期物理系统动力学的潜在简单性。这项工作预计将影响非线性动力学的其他发展领域，包括非线性光子晶体波导中光开关的固有局域化电磁模式，周期性约瑟夫森结阵列的固有局域化，微电-机械系统的机械局域化，带有周期性谐振器阵列的充气管中能量的声学局域化，以及在最大规模上，高能加速器中多束模式的非线性局域化。在这个新的研究领域工作的研究生和本科生将接受凝聚态非线性动力学方面的培训，其中包括技术上重要的长度尺度的应用。