Not All Fluorescent Nanodiamonds Are Created Equal: A Comparative Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F19%3A00503799" target="_blank" >RIV/61388963:_____/19:00503799 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/19:00503799

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/ppsc.201900009" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/ppsc.201900009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ppsc.201900009" target="_blank" >10.1002/ppsc.201900009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Not All Fluorescent Nanodiamonds Are Created Equal: A Comparative Study

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Not All Fluorescent Nanodiamonds Are Created Equal: A Comparative Study

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Particle & Particle Systems Characterization

ISSN

0934-0866

e-ISSN

—

Svazek periodika

36

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

1900009

Kód UT WoS článku

000461878400001

EID výsledku v databázi Scopus

2-s2.0-85060825825