Fluorescent HPHT nanodiamonds have disk- and rod-like shapes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F23%3A00569756" target="_blank" >RIV/61388963:_____/23:00569756 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/23:10470950

Výsledek na webu

<a href="https://doi.org/10.1016/j.carbon.2023.02.018" target="_blank" >https://doi.org/10.1016/j.carbon.2023.02.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2023.02.018" target="_blank" >10.1016/j.carbon.2023.02.018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fluorescent HPHT nanodiamonds have disk- and rod-like shapes

Popis výsledku v původním jazyce

Fluorescent nanodiamonds (FNDs) containing nitrogen-vacancy (NV) centers can be used as nanoscale sensors for temperature and electromagnetic fields and find increasing application in many areas of science and technology from biology to quantum metrology. Decreasing the separation between the NV centers and their sensing target often enhances the measurement sensitivity. FND shape strongly affects this distance from NV centers to the particle surface and therefore properties such as brightness and fluorescence spectrum, and can limit sensor applications. Here, we demonstrate that FNDs made from high-pressure high-temperature (HPHT) diamond have predominantly disk-like shapes. Using single-particle atomic force microscopy in combination with ensemble X-ray and light scattering techniques, we show that a typical FND in the 50–150 nm size range has an aspect ratio of three i.e. is three times thinner (e.g. in z) than it is wide (e.g. in the x-y plane). This high aspect ratio of FNDs is important for many quantum sensing measurements as it will enable enhanced sensitivities compared to spherical or other isotropic particle geometries. We investigate FND shape, fluorescence properties, T1 spin relaxation time and T1 fluorescence contrast as functions of particle size and discuss the implications of FND particle shape on quantum sensing applications.

Název v anglickém jazyce

Fluorescent HPHT nanodiamonds have disk- and rod-like shapes

Popis výsledku anglicky

Fluorescent nanodiamonds (FNDs) containing nitrogen-vacancy (NV) centers can be used as nanoscale sensors for temperature and electromagnetic fields and find increasing application in many areas of science and technology from biology to quantum metrology. Decreasing the separation between the NV centers and their sensing target often enhances the measurement sensitivity. FND shape strongly affects this distance from NV centers to the particle surface and therefore properties such as brightness and fluorescence spectrum, and can limit sensor applications. Here, we demonstrate that FNDs made from high-pressure high-temperature (HPHT) diamond have predominantly disk-like shapes. Using single-particle atomic force microscopy in combination with ensemble X-ray and light scattering techniques, we show that a typical FND in the 50–150 nm size range has an aspect ratio of three i.e. is three times thinner (e.g. in z) than it is wide (e.g. in the x-y plane). This high aspect ratio of FNDs is important for many quantum sensing measurements as it will enable enhanced sensitivities compared to spherical or other isotropic particle geometries. We investigate FND shape, fluorescence properties, T1 spin relaxation time and T1 fluorescence contrast as functions of particle size and discuss the implications of FND particle shape on quantum sensing applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

<a href="/cs/project/EF16_026%2F0008382" target="_blank" >EF16_026/0008382: Uhlíkové alotropy s racionalizovanými nanorozhraními a nanospoji pro environmentální a biomedicínské aplikace</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Carbon

ISSN

0008-6223

e-ISSN

1873-3891

Svazek periodika

206

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

268-276

Kód UT WoS článku

001009050600001

EID výsledku v databázi Scopus

2-s2.0-85148699742