Figure 7
Schematic representation of the carbon pulse-plasma deposition reactor for growing the carbynebased nanostructures: 1-vacuum chamber; 2-substrate; 3-pulse-plasma carbon generator (graphite cylindrical cathode of main discharge); 4-the ion source for ionic stimulation; 5-target assembly with removable target material; 6-vacuum sensor
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... target. The vaporized material then condenses on a substrate, forming a two-dimensionally ordered linearchain carbon nano-matrix. The experimental set-up for ion-assisted pulse-plasma deposition of the twodimensionally ordered linear-chain carbon nano-matrix with capability of cluster-assembling by various chemical elements is presented in the Fig. ...
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... C. The chains of carbon atoms, Cn (where n = 1, 2, 3, …), formed in the plasma sheaf are directed by electrodes to impinge upon the surface of the substrate where the polycondensation of the carbon chains takes place. The schematic representation of the pulse-plasma carbon generator that was installed in the reactor of the experimental set-up (Fig. 7) is presented in Fig. ...
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... supplied by the pulsed voltage with an amplitude of 800 V. The inductance L is used to reduce the current growth rate to a required value. The growth of the carbon nano-matrix is enhanced by irradiation with Ar ions. The flux of Ar ions is formed by a low-pressure ion source, installed in a separate section of the deposition reactor chamber (see Fig. 7). The energy of ions bombarding the substrate surface depends on the substrate bias voltage, being varied in the range (0-300) eV by both the carbon plasma parameters and the ion source extractor voltage, depending on the parameters of the plasma assisted deposition. The nano-matrix can be deposited onto Si wafer, metals, and NaCl ...
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... −4 Pa. The operating pressure during the deposition is 10 −4 Pa. The structure of bonds in the grown carbon nano-matrices can be programmed by the processes of self-organization and auto-synchronization of the growing nanostructures. As a number of experiments show the sp1-bonds and sp-hybridized carbon nanostructures are formed only in a narrow (Fig. 7): 1-a cylindrical cathode of main discharge (evaporated material, the high purity graphite); 2-anode of the main discharge; 3-a solenoid final focusing system with plasma neutralization; 4-second anode of auxiliary discharge; 5-ignition electrode; 6-cathode of auxiliary discharge; 7-dielectric insulator; 8-substrate holder range of ...
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Citations
... With taking into account that the 2D-LCC-based nano-matrix are acoustically sensitive nanomaterial, we propose use the predictive fine tuning the nanoarchitecture, vibrational characteristics and heteroatom-doping by using the surface acoustic wave (SAW)-based toolkit, [13]. In particular, we propose to use the technology of the carbyne-enriched nanomaterial growing onto acoustically excited piezoelectric-based substrates. ...
We propose to uncover new opportunities for predictive nano-sized energetic materials performance enhancement through manipulating by vibrational interactions, energy exchange as well as heat transfer enhancement within the reaction zones at nanoscale. The combination of multiple carbon nanostructured materials with various hybridizations within a single substance can uncover new unique properties. Due to a recent fundamental discovery the collective atomic vibrations, called phonon waves, manifested in transition domains of multilayer nanostructures, incorporation of self-organized arrays of metastable nanostructures are capable controlling vibrational interactions and energy exchange within the reaction zones at nanoscale. For using this phenomenon, we propose predictive incorporation into the nano-sized energetic material composition of various carbon-based allotropes, used as catalytic nano-additives, combined with assembling them by the self-organized arrays of differently hybridized low-dimensional nanocarbon promoters. For predictive combining of multiple differently hybridized nanocarbons within a single substance we propose to use the energy-driven initiation of the allotropic phase transformations in nanocarbon promoters by concurrent electron and ion irradiation. For fine tuning the collective atomic vibrations, nanoarchitecture and functionality of the mentioned arrays of differently hybridized nanocarbon promoters we propose using combination of a set of techniques: concurrent electron and ion irradiation, using the surface acoustic waves combined with heteroatom doping along with application external electromagnetic fields and using the data-driven nanoscale manufacturing approach.
We present a method of synthesis of sp-carbon allotropes or carbynes. Linear chains of carbon atoms are obtained from graphite placed in a joint field of laser plasma and arc discharge. The combined action of laser and arc discharge allows to create conditions for the formation of a variety of carbon allotropes, whose structural composition is governed by the interplay of external fields. The method may be employed in the mass production of sp- and sp²- hybridized carbon for the needs of possible applications in micro and nanoelectronics, biosensing.
