Activation Mechanism of the Cyclic
Switchover Effect for Quantum Selective
Detection with Dendritic Yanson Point
Contacts
Alexander P. Pospelov, Gennadii V. Kamarchuk, Anna O. Herus,
N. D. Sakhnenko, Maryna Ved, and Volodymyr L. Vakula
1 Introduction
The theoretical and experimental studies carried out in recent years have unequivocally demonstrated that the Yanson point contact [1, 2] placed in an ion-conducting
medium can be considered as an electrochemical gapless electrode system (GES)
[3, 4]. This effect is realized due to the ability of Yanson point contact to concentrate electric field, to keep its identity under a super high current density and to
ensure an opposite directed electrochemical activity located at the ends of the point
contact conductivity channel. One of the characteristic features of GES behavior
is the transfer of charge along two parallel branches corresponding to the electronic and ionic conduction channels [5, 6]. The electronic channel is realized in
the bulk of the conductor and is responsible for the so-called direct conduction. The
ionic channel is localized in the electrolyte near the metal–electrolyte interface. The
transfer processes in these two channels are conjugated which stimulates a series of
physicochemical effects and transformations. One of the most interesting results of
this interaction is the point-contact cyclic switchover effect [3]. The cyclic processes
of synthesis and dissolution of dendritic point contacts, it consists of, occurring in
accordance with the quantum shell effect [7] and are characterized by a number
of features which explicitly demonstrate the quantum properties of Yanson point
contacts. This makes it possible to apply the innovative operation principle of the
A. P. Pospelov · N. D. Sakhnenko · M. Ved
Department of Physical Chemistry, National Technical University “Kharkiv Polytechnic
Institute”, 2 Kyrpychov Str., Kharkiv 61002, Ukraine
G. V. Kamarchuk · A. O. Herus · V. L. Vakula (B)
Department of Spectroscopy of Molecular Systems and Nanostructured Materials, B. Verkin
Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of
Ukraine, 47 Nauky Ave., Kharkiv 61103, Ukraine
e-mail: vakula@ilt.kharkov.ua
© Springer Nature Switzerland AG 2021
O. Fesenko and L. Yatsenko (eds.), Nanomaterials and Nanocomposites,
Nanostructure Surfaces, and Their Applications, Springer Proceedings
in Physics 246, https://doi.org/10.1007/978-3-030-51905-6_44
627
Switchover Effect for Quantum Selective
Detection with Dendritic Yanson Point
Contacts
Alexander P. Pospelov, Gennadii V. Kamarchuk, Anna O. Herus,
N. D. Sakhnenko, Maryna Ved, and Volodymyr L. Vakula
1 Introduction
The theoretical and experimental studies carried out in recent years have unequivocally demonstrated that the Yanson point contact [1, 2] placed in an ion-conducting
medium can be considered as an electrochemical gapless electrode system (GES)
[3, 4]. This effect is realized due to the ability of Yanson point contact to concentrate electric field, to keep its identity under a super high current density and to
ensure an opposite directed electrochemical activity located at the ends of the point
contact conductivity channel. One of the characteristic features of GES behavior
is the transfer of charge along two parallel branches corresponding to the electronic and ionic conduction channels [5, 6]. The electronic channel is realized in
the bulk of the conductor and is responsible for the so-called direct conduction. The
ionic channel is localized in the electrolyte near the metal–electrolyte interface. The
transfer processes in these two channels are conjugated which stimulates a series of
physicochemical effects and transformations. One of the most interesting results of
this interaction is the point-contact cyclic switchover effect [3]. The cyclic processes
of synthesis and dissolution of dendritic point contacts, it consists of, occurring in
accordance with the quantum shell effect [7] and are characterized by a number
of features which explicitly demonstrate the quantum properties of Yanson point
contacts. This makes it possible to apply the innovative operation principle of the
A. P. Pospelov · N. D. Sakhnenko · M. Ved
Department of Physical Chemistry, National Technical University “Kharkiv Polytechnic
Institute”, 2 Kyrpychov Str., Kharkiv 61002, Ukraine
G. V. Kamarchuk · A. O. Herus · V. L. Vakula (B)
Department of Spectroscopy of Molecular Systems and Nanostructured Materials, B. Verkin
Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of
Ukraine, 47 Nauky Ave., Kharkiv 61103, Ukraine
e-mail: vakula@ilt.kharkov.ua
© Springer Nature Switzerland AG 2021
O. Fesenko and L. Yatsenko (eds.), Nanomaterials and Nanocomposites,
Nanostructure Surfaces, and Their Applications, Springer Proceedings
in Physics 246, https://doi.org/10.1007/978-3-030-51905-6_44
627