Emission Properties of Metal Nanoparticles

Nepijko, S. A.; Elmers, H. J.; Schönhense, G.

doi:10.1007/978-3-319-15338-4_25

Cited by 3 publications

(1 citation statement)

References 45 publications

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“…Using the simplest experimental scheme shown in Fig. 1 (spherical capacitor), the increase in the electron concentration in the sample per atom under the action of an external source can be characterized by the dimensionless coefficient χ [6]:…”

Section: Changes In the Phonon Spectrum Of Metals And The Temperature...mentioning

confidence: 99%

Electroacoustic Effect and Electrical Superconductivity of Metals

Boyko,

Bogdanov,

Vovk

et al. 2023

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The paper discusses the conditions under which superconductivity of metals would be detected at atmospheric pressure and at room temperature. One of the possible directions of research to achieve these conditions is to change the phonon spectrum of metals in order to increase the Debye temperature, and therefore to increase the temperature of the superconducting transition Tc. According to the idea of the work and to the estimates made in it, the maximum frequency of phonons nmax in metals can be increased by the short-term action of an external constant electric field (electric pulse). The duration of the pulse should be (10–5–10–7) s. The voltage of the constant electric field source is U » 1V. A decrease in the crystal lattice parameter should be accompanied by an increase in the maximum phonon frequency nmax and, accordingly, by an increase in the Debye temperature. The characteristic size of the sample, in which the change in electron concentration can be realized, should not exceed the length of electron shielding in metals, i. e. ≈ 10–8 m. The sequential action of a certain number of electric field pulses can maintain a superconducting state in a metal sample for some finite time.

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Section: Changes In the Phonon Spectrum Of Metals And The Temperature...mentioning

confidence: 99%

Electroacoustic Effect and Electrical Superconductivity of Metals

Boyko,

Bogdanov,

Vovk

et al. 2023

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Phytochemical Process for the Functionalization of Materials with Metal Nanoparticles: Current Trends and Future Perspectives

Hariram

Vivekanandhan²

2018

ChemistrySelect

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The bioreduction process, that utilizes the plant extracts, have been explored extensively as a green chemical route for the synthesis of metal nanoparticles due to their eco-friendly protocol as well as versatility in the selection of various plant resources. Recent advances in this plant extract mediated biological process are the fabrication of functional nanostructures. Bioreduction mechanism catalyzes the combining process of metal nanoparticles with other kind of materials including metal, metal oxides, cellulosic, zeolite and carbon nanomaterials. Integrating metal nanoparticles with various materials offers new functional properties and improves their performance comparing to their pristine counterpart. In this review, plant-based biochemical substances, which influence the metal ion into metal and their controlled nucleation on the surface of other kinds of materials are highlighted, and the future prospect of this bio-based synthesis of functional nanostructures are discussed.[a] M. Hariram, Dr. S. Vivekanandhan

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