Hydrogen-terminated detonation nanodiamond: Impedance spectroscopy and thermal stability studies

Shi, Shaobo; Li, Jiangling; Kundrát, Vojtěch; Abbot, Andrew M.; Ye, Haitao

doi:10.1063/1.4773830

Cited by 16 publications

(12 citation statements)

References 46 publications

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“…Recently, Su et al reported that hydrogenation of detonation ND by hydrogen plasma treatment increased the electrical conductivity, as estimated by impedance spectroscopy, by four orders of magnitude. 23 In the present study, we investigated the surface hydrogenation of NDs by high temperature treatment in hydrogen gas and the resistivity of the NDs as a function of treatment temperature. Based upon the estimation of the surface oxygen content and the sp 2 /sp 3 carbon ratio of the treated NDs, the decrease in the resistivity was found to be consistent with the transfer doping caused by the surface hydrogenation of ND.…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity of thermally hydrogenated nanodiamond powders

Kondo

Neitzel

Mochalin

et al. 2013

Journal of Applied Physics

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Electrical properties of detonation diamond nanoparticles (NDs) with individual diameters of $5 nm are important for many applications. Although diamond is an insulator, it is known that hydrogenterminated bulk diamond becomes conductive when exposed to water. We show that heating ND in hydrogen gas at 600-900 C resulted in a remarkable decrease in resistivity from 10 7 to 10 5 X cm, while the resistivity was essentially unchanged after treatment at 400 C and lower temperatures. Fourier Transform Infrared Spectroscopy and X-ray photoelectron spectroscopy (XPS) studies revealed that hydrogenation of ND occurs at 600-900 C, suggesting that the decrease in resistivity is based on transfer doping at the hydrogenated ND surface. Oxidation of the hydrogenated sample at 300 C recovers resistivity to its original value. The resistivity of treated ND as a function of the O/C atomic ratio showed a transition from resistive (O/C ratio > 0.033) to conductive (O/C ratio < 0.033) state. This is consistent with the idea that the change in the resistivity is caused by the shift of the valence band maximum to above the Fermi level due to the dipole of the C-H bonds leading to transfer doping. V C 2013 AIP Publishing LLC. [http://dx.

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Section: Introductionmentioning

confidence: 99%

Electrical conductivity of thermally hydrogenated nanodiamond powders

Kondo

Neitzel

Mochalin

et al. 2013

Journal of Applied Physics

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“…Loh et al reported the efficient reduction of oxidized DNDs by exposing the nanoparticles to hydrogen plasma [56]. Hydrogen-terminated NDs are hydrophobic, stable in suspension, and display p -type conductivity which can facilitate further surface modifications [57, 58]. …”

Section: Synthesis and Functionalization Of Ndsmentioning

confidence: 99%

Multifunctional nanodiamonds in regenerative medicine: Recent advances and future directions

Whitlow

Pacelli

Paul

2017

Journal of Controlled Release

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With recent advances in the field of nanomedicine, many new strategies have emerged for diagnosing and treating diseases. At the forefront of this multidisciplinary research, carbon nanomaterials have demonstrated unprecedented potential for a variety of regenerative medicine applications including novel drug delivery platforms that facilitate the localized and sustained release of therapeutics. Nanodiamonds (NDs) are a unique class of carbon nanoparticles that are gaining increasing attention for their biocompatibility, highly functional surfaces, optical properties, and robust physical properties. Their remarkable properties have established NDs as an invaluable regenerative medicine platform, with a broad range of clinically relevant applications ranging from targeted delivery systems for insoluble drugs, bioactive substrates for stem cells, and fluorescent probes for long-term tracking of cells and biomolecules in vitro and in vivo. This review introduces the synthesis techniques and the various routes of surface functionalization that allow for precise control over the properties of NDs. It also provides an in-depth overview of the current progress made towards the use of NDs in the fields of drug delivery, tissue engineering, and bioimaging. Their future outlook in regenerative medicine including the current clinical significance of NDs, as well as the challenges that must be overcome to successfully translate the reviewed technologies from research platforms to clinical therapies will also be discussed.

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“…The IS technique has been effectively utilized to analyse the electric transport of bulk diamond and nanodiamonds, previously. [16][17][18][19] However, no efforts have been made on the more complex diamond MOS structure.…”

Section: International Center For Materials Nanoarchitectonics (Mana)mentioning

confidence: 99%

Impedance analysis of Al2O3/H-terminated diamond metal-oxide-semiconductor structures

Liao

Liu

Sang

et al. 2015

Applied Physics Letters

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Impedance spectroscopy (IS) analysis is carried out to investigate the electrical properties of the metal-oxide-semiconductor (MOS) structure fabricated on hydrogen-terminated single crystal diamond. The low-temperature atomic layer deposition Al 2 O 3 is employed as the insulator in the MOS structure. By numerically analysing the impedance of the MOS structure at various biases, the equivalent circuit of the diamond MOS structure is derived, which is composed of two parallel capacitive and resistance pairs, in series connection with both resistance and inductance. The two capacitive components are resulted from the insulator, the hydrogenated-diamond surface, and their interface. The physical parameters such as the insulator capacitance are obtained, circumventing the series resistance and inductance effect.By comparing the IS and capacitance-voltage measurements, the frequency dispersion of the capacitance-voltage characteristic is discussed. a)

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Hydrogen-terminated detonation nanodiamond: Impedance spectroscopy and thermal stability studies

Cited by 16 publications

References 46 publications

Electrical conductivity of thermally hydrogenated nanodiamond powders

Electrical conductivity of thermally hydrogenated nanodiamond powders

Multifunctional nanodiamonds in regenerative medicine: Recent advances and future directions

Impedance analysis of Al2O3/H-terminated diamond metal-oxide-semiconductor structures

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