Unique electrical properties of nanostructured diamond cones

Gu, Changzhi; Wang, Qiang; Li, Junjie; Xia, Ke

doi:10.1088/1674-1056/22/9/098107

Cited by 13 publications

(5 citation statements)

References 45 publications

(60 reference statements)

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“…[11] Many interesting physical properties of CACs have been explained theoretically, including nanoelectronic/spintronic devices. [12][13][14][15][16][17] The electronic transport properties of a nanostructure are usually at the heart of the nanostructure's own functionality. [18] The sp bonding interface (carbon wirecarbon wire junctions), or the sp 2 bonding interface (carbon wire-graphene junctions), or the sp 3 bonding interface (carbon wire-metal and carbon wire-carbon nanotube junctions) shows several unique electron transport properties.…”

Section: Introductionmentioning

confidence: 99%

Stability of conductance oscillations in carbon atomic chains

Hou

Liu

2015

Chinese Phys. B

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The conductance stabilities of carbon atomic chains (CACs) with different lengths are investigated by performing theoretical calculations using the nonequilibrium Green's function method combined with density functional theory. Regular even-odd conductance oscillation is observed as a function of the wire length. This oscillation is influenced delicately by changes in the end carbon or sulfur atoms as well as variations in coupling strength between the chain and leads. The lowest unoccupied molecular orbital in odd-numbered chains is the main transmission channel, whereas the conductance remains relatively small for even-numbered chains and a significant drift in the highest occupied molecular orbital resonance toward higher energies is observed as the number of carbon atoms increases. The amplitude of the conductance oscillation is predicted to be relatively stable based on a thiol joint between the chain and leads. Results show that the current-voltage evolution of CACs can be affected by the chain length. The differential and second derivatives of the conductance are also provided.

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Section: Introductionmentioning

confidence: 99%

Stability of conductance oscillations in carbon atomic chains

Hou

Liu

2015

Chinese Phys. B

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“…The voltage and current signals interference above 1.5kHz may be removed through two order low-pass filter. According to sampling theorem, aliasing error was not produced if the highest frequency of system processing signal is less than the sampling frequency of 1/2, however, the great high sampling frequency would increase the burden of the processor, effect real-time [5]. 19 harmonic was mainly considered in system design, 64 points per cycle, namely sampling frequency is 3.2kHz,cut-off frequency was 19×50=950Hz, Q value was 0.707, the attenuation rate of 0 f f >> was not less than 10 / 30dB .…”

Section: Hardware Design Of the Systemmentioning

confidence: 99%

Design of Power Fault Recorder Based on Embedded Systems

Zhou

2012

AMR

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The hardware and software design of power fault recorder based on the embedded systems was introduced .The system adopted modularization design and double CPU work with each other. In order to improve the precision and speed of fault recording, The DSP chip TMS320C33 was used to diagnose the power system and record the parameter of power system when an inaccuracy or an abnormity occurred, which satisfied the requirement of high accuracy of the data. S3C44B0X as the main control processor was adopted, the embedded operate system uClinux was transplanted, which make easier to display, transfer and storage of important information, and it was useful to communicate with operators. Compared with the power fault recorder based on traditional MCU, the system had several advantages, such as higher accuracy of data acquisition, higher solution speed, bigger system capacity, and so on. If the system combines with better fault detection algorithm and data compression algorithm, its performance was improved to a great extent.

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] When the appropriate additive is doped, the electronic properties of semiconductor diamond can be realized. [16][17][18][19][20] Some of the properties may be influenced by the impurities incorporated in the diamond lattice. Both phosphorus and sulfur are considered as the potential doping elements.…”

Section: Introductionmentioning

confidence: 99%

Large single crystal diamond grown in FeNiMnCo–S–C system under high pressure and high temperature conditions

Zhang

et al. 2016

Chinese Phys. B

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Large diamonds have successfully been synthesized from FeNiMnCo-S-C system at temperatures of 1255-1393 • C and pressures of 5.3-5.5 GPa. Because of the presence of sulfur additive, the morphology and color of the large diamond crystals change obviously. The content and shape of inclusions change with increasing sulfur additive. It is found that the pressure and temperature conditions required for the synthesis decrease to some extent with the increase of S additive, which results in left down of the V-shape region. The Raman spectra show that the introduction of additive sulfur reduces the quality of the large diamond crystals. The x-ray photoelectron spectroscopy (XPS) spectra show the presence of S in the diamonds. Furthermore, the electrical properties of the large diamond crystals are tested by a four-point probe and the Hall effect method. When sulfur in the cell of diamond is up to 4.0 wt.%, the resistance of the diamond is 9.628×10 5 Ω•cm. It is shown that the large single crystal samples are n type semiconductors. This work is helpful for the further research and application of sulfur-doped semiconductor large diamond.

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Unique electrical properties of nanostructured diamond cones

Cited by 13 publications

References 45 publications

Stability of conductance oscillations in carbon atomic chains

Stability of conductance oscillations in carbon atomic chains

Design of Power Fault Recorder Based on Embedded Systems

Large single crystal diamond grown in FeNiMnCo–S–C system under high pressure and high temperature conditions

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