arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1602.00410cond-mat.mtrl-sci
收藏

纳米金刚石中氮空位色心的阴极发光效率

Efficiency of Cathodoluminescence Emission by Nitrogen-Vacancy Color Centers in Nanodiamond

Huiliang Zhang, David R. Glenn, Richard Schalek, Jeff W. Lichtman, Ronald L. Walsworth

摘要:

相关电子显微镜和阴极发光(CL)成像功能化纳米粒子是一个有前途的纳米探针的生物结构和功能。含有CL发射色心的纳米金刚石(ND)特别适合于此类应用。来自ND的CL发射的强度由多种因素的组合决定,包括:颗粒尺寸;色心密度;通过电子穿过颗粒的能量沉积效率;以及从沉积的能量到CL发射的转换效率。我们报告的实验和数值模拟,调查这些因素中的每一个的相对重要性,在确定CL发射强度从ND含氮空位(NV)色心。特别是,我们发现,CL可以检测到NV掺杂ND的尺寸小至~ 40 nm,虽然CL发射显着降低较小的ND。

英文摘要:

Correlated electron microscopy and cathodoluminescence (CL) imaging using functionalized nanoparticles is a promising nanoscale probe of biological structure and function. Nanodiamonds (NDs) that contain CL-emitting color centers are particularly well suited for such applications. The intensity of CL emission from NDs is determined by a combination of factors, including: particle size; density of color centers; efficiency of energy deposition by electrons passing through the particle; and conversion efficiency from deposited energy to CL emission. We report experiments and numerical simulations that investigate the relative importance of each of these factors in determining CL emission intensity from NDs containing nitrogen-vacancy (NV) color centers. In particular, we find that CL can be detected from NV-doped NDs with dimensions as small as ~ 40 nm, although CL emission decreases significantly for smaller NDs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑