Nanodiamond surface as a photoluminescent pH sensor

Padrez, Yaraslau; Golubewa, Lena; Bahdanava, Anastasiya; Jankunec, Marija; Matulaitienė, Ieva; Semenov, Dmitry V.; Karpicz, Renata; Kulahava, Tatsiana; Svirko, Yuri; Kuzhir, P.

doi:10.1088/1361-6528/acb94b

“…The closest competitors, core-shell nanodiamonds made by pulsed laser oblations [26,27] do not comprise the color centers and can be used for biosensing exploring only their surface functionalization [28].…”

Section: Discussionmentioning

confidence: 99%

Core-shell diamond-graphene needles with silicon-vacancy color centers

Quarshie,

Malykhin,

Kuzhir

2024

Preprint

0

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Color centers in diamond nanostructures open new horizons in biomedicine offering a biocompatible material platform for sensing temperature, pH, and magnetic field. Covering of the color centers enriched diamonds with graphene shell can essentially extend their application potential. Specifically, under irradiation with ultrashort laser pulses, the highly absorptive graphene shell can be used for excitation of a shock acoustic wave capable of cancer cell destruction or could lead to drug photoactivation through the Joule heating. We expect that being nanometrically thin, graphene shells do not suppress the photoluminescence (PL) of the diamond color center allowing synergetic exploitation of both the shell for cell treatment by light absorption and color center sensing. In this letter we demonstrate that Single Crystal Diamond Needles (SCDNs) can be gently covered with graphene shell through vacuum annealing at 900 °C for 30 mins, keeping the response of silicon-vacancy (SiV-) centers.

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“…The closest competitors, core-shell nanodiamonds made by pulsed laser oblations [26,27] do not comprise the color centers and can be used for biosensing exploring only their surface functionalization [28].…”

Section: Discussionmentioning

confidence: 99%

Core-shell diamond-graphene needles with silicon-vacancy color centers

Quarshie,

Malykhin,

Kuzhir

2024

Preprint

1

0

View full text Add to dashboard Cite

Color centers in diamond nanostructures open new horizons in biomedicine offering a biocompatible material platform for sensing temperature, pH, and magnetic field. Covering of the color centers enriched diamonds with graphene shell can essentially extend their application potential. Specifically, under irradiation with ultrashort laser pulses, the highly absorptive graphene shell can be used for excitation of a shock acoustic wave capable of cancer cell destruction or could lead to drug photoactivation through the Joule heating. We expect that being nanometrically thin, graphene shells do not suppress the photoluminescence (PL) of the diamond color center allowing synergetic exploitation of both the shell for cell treatment by light absorption and color center sensing. In this letter we demonstrate that Single Crystal Diamond Needles (SCDNs) can be gently covered with graphene shell through vacuum annealing at 900 °C for 30 mins, keeping the response of silicon-vacancy (SiV-) centers.

show abstract

“…A similar mechanism works for detecting paramagnetic samples or free radicals in biological samples. [53][54][55] NDs can also be harnessed for localized nuclear magnetic resonance (NMR) measurements. This involves manipulating the NDs to bring them into proximity to the sample, enhancing the signal as the detectability of a few nuclei diminishes with distance.…”

Section: Applications In Quantum Sensing and Nanophotonic Assemblymentioning

confidence: 99%

“…Reproduced with permission. [ 65 ] Copyright 2023, IOP Publishing Ltd d) Top; Schematic of association between a nanodiamond and EGF receptor. Bright field image of C. elegans, bright field and selective imaging protocol image of the intestine of C. elegans, bottom (left to right), the circle shows the nanodiamond and orange line shows the outline of the intestine.…”

Section: Capabilities and Limitations Of Colloidal Fndsmentioning

confidence: 99%

See 1 more Smart Citation

Spatial Manipulation of Fluorescent Colloidal Nanodiamonds for Applications in Quantum Sensing

Vashist,

Ghosh,

Ghosh

2023

Advanced Physics Research

1

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Nitrogen vacancy (NV) centers in diamonds are of current interest as quantum sensors, single photon sources, and biological nanomaterials due to their unique optical and spin properties, biocompatibility, and robust structure. Though NV center in diamonds demonstrates longer coherence time and has been used for more sensing and quantum operations compared to nanodiamonds (NDs), the prospect of selecting NDs with single, few, or multiple NV centers and moving the NDs to the location of interest makes NDs suitable for various applications, due to which there is a significant boost in the last decade to manipulate and position the NDs on the surface or to achieve dynamic control in the fluidic environment. This work covers some of the basics of the materials and optical properties of nanodiamonds and discusses the capabilities and challenges for practical applications, followed by a detailed review of the various static and dynamic manipulation methods of nanodiamonds in microfluidic environments (colloidal NDs).

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Nanodiamond surface as a photoluminescent pH sensor

Cited by 9 publications

References 76 publications

Core-shell diamond-graphene needles with silicon-vacancy color centers

Core-shell diamond-graphene needles with silicon-vacancy color centers

Core-shell diamond-graphene needles with silicon-vacancy color centers

Spatial Manipulation of Fluorescent Colloidal Nanodiamonds for Applications in Quantum Sensing

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