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

这是康奈尔大学获得的一个奖项，用于研究非线性纳米尺度的局部化和学生培训。将购买一台带有相关探测器的泵浦探测宽带光谱仪，以建立一个新的实验平台，用于产生和研究经典反铁磁体和量子反铁磁体中自旋波的本征非线性纳米局域化。该仪器将使在C(2)CuCl4中产生本征局域自旋波和其他反铁磁体在较大频率范围内的产生成为可能。它还将允许对这些纳米级物体进行时间依赖和传输研究，研究范围可以达到毫秒和亚毫秒的时间范围。高功率和大调谐范围是该专用仪器的基本特点，用于实验研究凝聚态物理中一种新的基本纳米尺度局域现象。周期晶格中的这种局部化只依赖于非线性和离散性的一般物理特征确保了在这一领域工作的研究生和本科生将接受非线性动力学方面的培训，应用范围从纳米到宏观。这是对康奈尔大学获得研究非线性纳米尺度局部化和学生培训的仪器的奖励。这个实验仪器旨在通过探索原子晶格中的大幅度纳米级激发来探索非线性周期物理系统动力学的潜在简单性。这项工作有望影响其他发展中的非线性动力学领域，包括非线性光子晶体波导中光开关的本征局域化电磁模式，周期约瑟夫森结阵列中的本征局域化，微电子机械系统中的机械局部化，具有周期性谐振器阵列的充气管中能量的声学局部化，以及最大规模的高能加速器中多束团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的培训，应用涉及重要的技术长度尺度。

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.