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纳米机械振子具有超小的质量、超高的品质因数和振动频率以及其他优点,越来越受到人们的关注和认可.随着纳米科技的快速发展,纳米机械振子逐步进入到生物、化学、物理、医学等领域,成为科学研究工作者追求高质量和高性能材料的辅助系统.本文总结了本课题组近年来对纳米机械振子研究的一个重要应用:纳米光学质谱仪.在全光条件下,质量测量对象可为中性原子、质子、中子,也可为其他化学分子或生物分子等.我们提供的纳米机械振子材料为纳米碳管和石墨烯纳米带.研究发现,基于纳米机械振子的光学质谱仪与传统的电学质谱仪相比有很多优越性,如不会引发由电路引起的热效应和能量损失,基于质量测量的光学谱宽更窄等.与单束光探测方法相比,不受频率高低的限制.此研究工作提出的基于全光学的质量测量方案,打破了电学测量和单束光领域中的众多限制,有望更大程度地提高质量测量的灵敏度和准确度,为纳米测量领域提供一个新的平台.
With the ultra-small mass, high quality factor and vibration frequency and other advantages, nano-mechanical vibrator attracts more and more people’s attention and recognition.With the rapid development of nano-technology, nano-mechanical vibrator gradually enters biological, chemical and physical , Medicine and other fields, and become an assistant system for scientific researchers to pursue high-quality and high-performance materials.This paper summarizes an important application of our research group to nano-mechanical oscillators in recent years: The mass measurement object can be neutral atoms, protons, neutrons, but also for other chemical molecules or biomolecules, etc. We provide the nano-mechanical oscillator materials for the carbon nanotubes and graphene nanoribbons. Study found that based on the nano-mechanical oscillator Optical mass spectrometers have many advantages over traditional mass spectrometers, such as not inducing thermal effects and energy losses caused by electrical circuits, narrower optical spectral widths based on mass measurements, etc. Compared with single-beam photodetectors, Limited by the frequency of high and low.The proposed work based on all-optical quality measurement program, breaking the field of electrical measurement and single beam Many restrictions, is expected to a greater extent to improve the sensitivity and accuracy of mass measurements, provide a new platform for nanometer measurement.