Effect of Nitrogen Concentration on Nanodiamond Film Characteristics for Electrode Application

Raina, Supil; LeQuan, X.C.; Kang, W.P.; Davidson, J.L.

doi:10.1149/1.3242513

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…Moreover, the microwave plasma (MW) CVD is widely used to synthesize ND films on various chemically dissimilar surface substrates owing to the relatively low growth temperature, which utilizes the microwave energy to heat and decompose the gas molecules in the cavity into reactive groups, then finally obtain a high-quality ND film [ 65 , 66 , 67 , 68 , 69 , 70 ]. For example, Cheng C.Y.…”

Section: Fabrication Methods and Nucleation Process Of Nanodiamond Filmmentioning

confidence: 99%

Recent Progress of Nanodiamond Film in Controllable Fabrication and Field Emission Properties

et al. 2023

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The interest in the field electron emission cathode nanomaterials is on the rise due to the wide applications, such as electron sources, miniature X-ray devices, display materials, etc. In particular, nanodiamond (ND) film is regarded as an ideal next-generation cathode emitter in the field emission devices, due to the low or negative electron affinity, small grain size, high mechanical hardness, low work function, and high reliability. Increasing efforts are conducted on the investigation of the emission structures, manufacturing cost, and field emission properties improvement of the ND films. This review aims to summarize the recent research, highlight the new findings, and provide a roadmap for future developments in the area of ND film electron field emitter. Specially, the optimizing methods of large-scale, high-quality, and cost-effective synthesis of ND films are discussed to achieve more stable surface structure and optimal physical properties. Additionally, the mainstream strategies applied to produce high field emission performance of ND films are analyzed in detail, including regulating the grain size/boundary, hybrid phase carbon content, and doping element/type of ND films; meanwhile, the problems existing in the related research and the outlook in this area are also discussed.

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Section: Fabrication Methods and Nucleation Process Of Nanodiamond Filmmentioning

confidence: 99%

Recent Progress of Nanodiamond Film in Controllable Fabrication and Field Emission Properties

et al. 2023

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“…Figure 3(b) shows the 'ridge' like microstructure of the nanodiamond film of each UME, see inset. Material characterization using Raman spectroscopy and X-ray Photoelectron Spectroscopy (XPS) and vacuum field emission studies from a similar planar nanodiamond film have been reported previously (24)(25). …”

Section: Sem Characterizationmentioning

confidence: 96%

Electrochemical Biosensor Utilizing Nitrogen Incorporated Nanodiamond Ultra-Microelectrode Array

et al. 2010

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A nitrogen incorporated nanodiamond ultra-microelectrode array was fabricated using silicon microfabrication technology and microwave PECVD process. 400 ultra-microelectrodes, which are arranged in a square array, project above the surrounding plane of the SiO 2 insulation layer. Each ultra-microelectrode has a radius of 5µm and a spacing of 100µm, in order to avoid an overlap of individual diffusion layers. Dopamine (DA), which is an important catecholamine neurotransmitter, can be detected by the UMEA using steady state cyclic voltammetry with a linear dynamic range of 100µM-1mM. Even though Ascorbic acid (AA) interferes with DA detection under real physiological conditions, we are able to extract the calibration curve for different DA concentrations in the presence of 1mM AA without the need of any surface modification.

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“…The UMEs have a 'donut' shape, with a thick and raised edge and a slightly recessed part in the middle, as seen in the inset of figure 2(b). Material characterization using Raman spectroscopy and X-ray Photoelectron Spectroscopy (XPS) of the nanodiamond film has been reported previously (33)(34). In this work, a scan rate of 300V/s was applied and repeated at a frequency of 10Hz, which simulates sub-second transient events of DA release in the brain (18)(19)(20)(21)(22).…”

Section: Sem Characterizationmentioning

confidence: 99%

High Temporal Resolution Bio-Sensing Using Nitrogen-Incorporated Nanodiamond Ultra-Microelectrode Array by Fast Scan Cyclic Voltammetry

Raina¹,

Kang²,

Davidson³

et al. 2013

ECS Trans.

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Microelectrodes have several benefits over macroelectrodes by virtue of their size. Their advantages include lower capacitance and uncompensated resistance loss, enhanced temporal and spatial resolution, usability in highly resistive media, increased signal to noise ratio. An array of microelectrodes can deliver these benefits along with signal amplification. Neurotransmitters, such as dopamine, undergo rapid fluctuations in concentrations occurring at a sub-second time scale. Real-time monitoring and measurement of these concentration changes, in-vivo or in-vitro, requires the use of ultra-microelectrode arrays (UMEAs). A nitrogen incorporated nanodiamond UMEA was fabricated using silicon microfabrication technology and microwave PECVD process. The array of 2500 UMEs, projects above the SiO2 insulating matrix, thus providing a 3-dimensional surface. Fast scan cyclic voltammetry at 300V/s was used to examine the temporal response and sensitivity for dopamine detection. A large negative holding potential was employed to promote DA pre-concentration in between the voltage scans.

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Effect of Nitrogen Concentration on Nanodiamond Film Characteristics for Electrode Application

Cited by 5 publications

References 13 publications

Recent Progress of Nanodiamond Film in Controllable Fabrication and Field Emission Properties

Recent Progress of Nanodiamond Film in Controllable Fabrication and Field Emission Properties

Electrochemical Biosensor Utilizing Nitrogen Incorporated Nanodiamond Ultra-Microelectrode Array

High Temporal Resolution Bio-Sensing Using Nitrogen-Incorporated Nanodiamond Ultra-Microelectrode Array by Fast Scan Cyclic Voltammetry

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