RAISE-TAQS: Quantum-based chemical sensing

RAISE-TAQS：基于量子的化学传感

• 批准号: 1839174
• 负责人: Robert Hamers
• 金额: $ 100万
• 依托单位: University of Wisconsin-Madison
• 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: 2018-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1839174&HistoricalAwards=false
• 关键词: RAISE; TAQS; Quantum; based; chemical

The goal of this project is to explore novel approaches to chemical sensing and analysis. This approach based on a quantum-mechanical property of electrons known as spin. Diamond samples containing a special defect, the nitrogen vacancy (NV) center. One of the carbon atoms in the diamond is replaced by a nitrogen atom adjacent to a vacancy. Such samples emit light in a way that is altered by the presence of spins on nearby molecules. In this project, chemists, physicists, and electrical engineers are collaborating to make diamond samples with arrays of NV centers placed at very specific locations beneath diamond surfaces. They then investigate how the light emitted by the NV centers depends on the location and distance of molecules located immediately outside of the diamond sample. Because spin-based chemical sensors do not currently exist, this work has the potential to lead to new types of chemical sensors with very high sensitivity, possibly at the single-molecule level. If successful, spin-based chemical sensors would be useful in a wide range of chemical, environmental and biomedical applications. In addition to training graduate and undergraduate students in the quantum-based science, the researcher team is also engaged with outreach events and development of public-friendly podcast on quantum-based chemical detection.The goal of the research is to explore fundamentally new approaches to detecting and measuringmolecular binding, cleavage, and dynamical motions at surfaces by exploiting the unique quantum mechanical properties of NV centers in diamond. The new sensing approach is based on characterizinghow electron spins of NV centers interact with spins present in molecules located nearby at the diamond-water interface. Nanolithographic patterning and ion implantation methods are being used to prepare samples containing arrays of NV centers, each of which can be probed and manipulated individually. Nanophotonic methods are being used to provide efficient ways of optically coupling light from individual NV centers to optical detectors. The diamond surfaces are being functionalized with molecules containing well defined spin probes that interact with the sub-surface NV centers in a manner that depends on the proximity between the spin probe and the NV centers. Researchers are using the resulting interactions between the spin of the molecules and the spin of the NV centers as a potentially novel approach to chemical sensing in which binding or release of molecules from surfaces is reported via spectroscopic changes in the NV centers.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目的目的是探索新颖的化学传感和分析方法。 这种方法基于称为自旋的电子的量子力学特性。 含有特殊缺陷的氮气空位（NV）中心的钻石样品。 钻石中的碳原子之一被接近空位的氮原子取代。这样的样品以一种因附近分子上旋转而改变的方式发出的光。 在这个项目中，化学家，物理学家和电气工程师正在合作制作钻石样品，其中的NV中心阵列放置在钻石表面下方非常特定的位置。 然后，他们研究了NV中心发出的光如何取决于位于钻石样品外面的分子的位置和距离。由于目前尚不存在基于自旋的化学传感器，因此这项工作有可能导致具有非常高灵敏度的新型化学传感器，可能在单分子水平上。如果成功，基于自旋的化学传感器将在各种化学，环境和生物医学应用中有用。除了培训基于量子的科学的培训研究生和本科生外，研究人员还参与外展活动并开发有关基于量子的化学化学检测的公共友好型播客。该研究的目的是通过在量化量型量droptim droptim dromplos中探索和测量分子结合，探索和测量分子型结合和动态运动的独特机构，以探索新的方法来检测和测量。新的传感方法基于表征NV中心的电子旋转与位于钻石水界面附近分子中的旋转相互作用。纳米载图案和离子植入方法用于制备包含NV中心阵列的样品，每个样品可以单独探测和操纵。正在使用纳米光学方法来提供有效的方法，从单个NV中心到光学探测器的光学耦合光。钻石表面正在用包含良好定义的自旋探针的分子功能化，这些探针与地下NV中心相互作用的方式取决于自旋探针和NV中心之间的接近度。研究人员将分子的自旋和NV中心的自旋之间的相互作用作为一种潜在的化学感应方法，其中通过NV中心的光谱变化报告了从表面的结合或释放的分子的结合或释放。该奖项反映了NSF的法定任务，并通过评估范围的范围来反映出支持者的支持者，并通过评估商标进行了支持。

项目成果

Adjoint-optimized nanoscale light extractor for nitrogen-vacancy centers in diamond

• DOI: 10.1515/nanoph-2020-0387
• 发表时间: 2020-07
• 期刊: Nanophotonics
• 影响因子: 7.5
• 作者: R. Wambold;Zhaoning Yu;Yuzhe Xiao;Benjamin Bachman;G. Jaffe;S. Kolkowitz;J. Choy;M. Eriksson;R. Hamers;M. Kats

High-Density Covalent Grafting of Spin-Active Molecular Moieties to Diamond Surfaces

• DOI: 10.1021/acs.langmuir.1c01425
• 发表时间: 2021-07-19
• 期刊: LANGMUIR
• 影响因子: 3.9
• 作者: Bachman, Benjamin F.;Jones, Zachary R.;Hamers, Robert J.
• 通讯作者: Hamers, Robert J.

How to organize an online conference

• DOI: 10.1038/s41578-020-0194-0
• 发表时间: 2020-03-18
• 期刊: NATURE REVIEWS MATERIALS
• 影响因子: 83.5
• 作者: Reshef, Orad;Aharonovich, Igor;Sapienza, Riccardo
• 通讯作者: Sapienza, Riccardo