期刊
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
卷 36, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.201900009
关键词
fluorescence; nanodiamonds; nitrogen-vacancy center; optical characterization; quantum properties
资金
- Australian Research Council (ARC) through its Centre of Excellence for Nanoscale BioPhotonics [CE140100003]
- LIEF program [LE160100051]
- RMIT
- Czech Science Foundation [18-17071S]
- MSM project [8C18004]
- European Regional Development Fund
- OP RDE
- Project: Chemical biology for drugging undruggable targets (Chem-BioDrug) [CZ.02.1.01/0.0/0.0/16_019/0000729]
- Project: Carbon allotropes with rationalized nanointerfaces and nanolinks for environmental and biomedical applications [CZ.02.1.01/0.0/0.0/16_026/0008382]
- Czech Academy of Sciences [RVO61389005]
- MSMT within the CANAM infrastructure of the NPI CAS Rez [LM2011019, LM2015056]
Fluorescent nanodiamonds (FNDs) are vital to many emerging nanotechnological applications, from bioimaging and sensing to quantum nanophotonics. Yet, understanding and engineering the properties of fluorescent defects in nanodiamonds remain challenging. The most comprehensive study to date is presented, of the optical and physical properties of five different nanodiamond samples, in which fluorescent nitrogen-vacancy (NV) centers are created using different fabrication techniques. The FNDs' fluorescence spectra, lifetime, and spin relaxation time (T-1) are investigated via single-particle confocal fluorescence microscopy and in ensemble measurements in solution (T-1 excepted). Particle sizes and shapes are determined using scanning electron microscopy and correlated with the optical results. Statistical tests are used to explore correlations between the properties of individual particles and also analyze average results to directly compare different fabrication techniques. Spectral unmixing is used to quantify the relative NV charge-state (NV- and NV0) contributions to the overall fluorescence. A strong variation is found and quantified in the properties of individual particles within all analyzed samples and significant differences between the different particle types. This study is an important contribution toward understanding the properties of NV centers in nanodiamonds. It motivates new approaches to the improved engineering of NV-containing nanodiamonds for future applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据