Thermal Transport and Thermodynamic Properties of Graphene at Very Low Temperatures

极低温下石墨烯的热传输和热力学性质

基本信息

  • 批准号:
    1206930
  • 负责人:
  • 金额:
    $ 37.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2012
  • 资助国家:
    美国
  • 起止时间:
    2012-07-01 至 2015-06-30
  • 项目状态:
    已结题

项目摘要

***Technical Abstract****This project explores the low temperature thermodynamic properties of graphene from 10mK to 10K. The focus is on measurements of the relevant thermal conductance channels, electron diffusion, phonon emission, and photon emission; this research will produce sensitive measurements of the electronic heat capacity. The work will be accomplished through the development of wide-bandwidth noise thermometry utilizing very sensitive, nearly quantum-limited microwave detection systems allowing to explore the difference between graphene on various substrates (SiO2, BN, etc.) and suspended flakes. Another important goal is the potential use of graphene as an ultra-sensitive bolometer and calorimeter. The initial estimates suggest that this material and measurement system will be capable of detecting single microwave photons and the photon shot noise; these capabilities would produce many opportunities in the fields of quantum measurement and quantum information. This project will be essential to the training of one junior scientist (Phd student or postdoc) and will involve summer undergraduate students. The PI will also reach out to the Navajo Nation to seek the involvement of an undergraduate student.****Non-Technical Abstract****Graphene is a single atomic layer of crystalline carbon, i.e. one layer of graphite from your pencil. Since 2004 when it was discovered how to easily isolate this material, there has been an intense effort to probe the remarkable electrical, mechanical, and thermal properties. In this work, measurements are made to find how heat is transported in the material and to determine the heat capacity of a tiny flake. It also explores the use of a tiny micron-sized flake of graphene as a very sensitive bolometer. A bolometer is a sensor which converts energy in the form of light or microwaves, into heat, and then this heating is detected. Bolometers have been used to provide very sensitive probes of the radiation from the big bang and future astronomy missions will require even more sensitive bolometers. From estimates, it appears that graphene can be used to create this next generation bolometer, and this study will determine if this is indeed true. These experiments will be lead by a junior scientist (Phd student of postdoc) and will also involve summer undergraduate students. The group will reach out to the Navajo Nation to seek the involvement of an undergraduate student.
* 技术摘要 * 本项目探索石墨烯从10 mK到10 K的低温热力学性质。 重点是测量相关的热导通道,电子扩散,声子发射和光子发射,这项研究将产生灵敏的测量电子热容。这项工作将通过开发宽带噪声测温技术来完成,该技术利用非常灵敏的、接近量子限制的微波检测系统来探索各种衬底(SiO2、BN等)上石墨烯之间的差异。和悬浮的薄片。另一个重要的目标是石墨烯作为超灵敏测辐射热计和量热计的潜在用途。 初步估计表明,这种材料和测量系统将能够检测单个微波光子和光子散粒噪声;这些能力将在量子测量和量子信息领域产生许多机会。 这个项目将是必不可少的一个初级科学家(博士生或博士后)的培训,并将涉及暑期本科生。 PI还将接触纳瓦霍民族,寻求本科生的参与。非技术摘要 * 石墨烯是一个单原子层的结晶碳,即一层石墨从你的铅笔。 自2004年发现如何容易地分离这种材料以来,人们一直在努力探索其卓越的电气,机械和热性能。 在这项工作中,测量是为了找到如何在材料中传输热量,并确定一个微小的薄片的热容。 它还探索了使用微小的微米级石墨烯薄片作为非常灵敏的测辐射热计。 测辐射热计是一种传感器,它将光或微波形式的能量转换为热量,然后检测这种加热。 测辐射热计已被用来提供对大爆炸辐射的非常灵敏的探测,未来的天文学任务将需要更灵敏的测辐射热计。 从估计来看,石墨烯似乎可以用来制造下一代测辐射热计,这项研究将确定这是否属实。 这些实验将由一名初级科学家(博士后的博士生)领导,也将涉及暑期本科生。 该组织将与纳瓦霍民族接触,寻求一名本科生的参与。

项目成果

期刊论文数量(0)
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会议论文数量(0)
专利数量(0)

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Keith Schwab其他文献

Information on heat
关于热量的信息
  • DOI:
    10.1038/444161a
  • 发表时间:
    2006-11-08
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Keith Schwab
  • 通讯作者:
    Keith Schwab

Keith Schwab的其他文献

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{{ truncateString('Keith Schwab', 18)}}的其他基金

Investigation of transport of superfluid 4He through 2D materials
研究超流体 4He 通过 2D 材料的输运
  • 批准号:
    2103425
  • 财政年份:
    2022
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Continuing Grant
MRI: Development of Advanced Ultra-low Temperature System for Exploration of Quantum Mechanics at the Macroscale
MRI:开发先进的超低温系统以探索宏观量子力学
  • 批准号:
    1052646
  • 财政年份:
    2010
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Preparation of the Quantum Ground of a Mechanical Resonator
机械谐振器量子接地的制备
  • 批准号:
    1052647
  • 财政年份:
    2010
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Continuing Grant
Preparation of the Quantum Ground of a Mechanical Resonator
机械谐振器量子接地的制备
  • 批准号:
    0804567
  • 财政年份:
    2008
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Continuing Grant
MRI: Development of Advanced Ultra-low Temperature System for Exploration of Quantum Mechanics at the Macroscale
MRI:开发先进的超低温系统以探索宏观量子力学
  • 批准号:
    0722116
  • 财政年份:
    2007
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant

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