III.Висновок
Дослідження, виконане в даній роботі виявило, що надзвичайно перспективним напрямком для широкого кола прикладних задач є розв’язок проблем, що виникають на шляху створення матеріалів з незвичайними електромагнітними властивостями – матеріалів з від’ємною діелектричною та магнітною проникністю, які отримали коротку назву “метаматеріали”.
Аналіз результатів та існуючого стану розробки метаматеріалів дозволяє зробити висновок, що актуальною науково-технічною проблемою є удосконалення інструментарію та методів побудови конструкції метаматеріалів з новими властивостями для розв’язку широкого класу прикладних задач на основі нано- та мікрохвильових технологій.
Література
[1] Sihvola, A. Metamaterials in electromagnetics Metamaterials, Volume 1, Issue 1, 2007, Pages 2-11
[2] Boltasseva, A. | Shalaev, V.M. Fabrication of optical negative-index metamaterials: Recent advances and outlook Metamaterials, Volume 2, Issue 1, 2008, Pages 1-17
[3] В. Г. Веселаго, Успехи физических наук, 173, № 7, 790 (2003г)
[4] Nader Engheta Metamaterials: Physics and Engineering Explorations. — Wiley & Sons. — P. xv, 3–30, 37, 143–150, 215–234, 240–256. — ISBN 9780471761020/
[5] Hoblyk V.V. The analysis of field above the impedance plane with periodic discrete heterogeneity by Chaplin’s method / Theoretical and experimental methods for antennas and SHF devices investigations. Proc. of Lvov Polytechnic Institute,, 1984, №1874.pp.27-70. (in Russian).
[6] Hoblyk V. V., Pavlysh V. А., Nychai I. V. Distributing of the field of dielectric plate with complex profile of dielectric permittivity change // Proc. of Lvov Polytechnic National University, „Electronics”. – 2009. – № 646. – pp. 51-56. (in Ukrainian).
[7] Hoblyk V. V., Pavlysh V. А., Nychai I. Research of the modulated nanosize structures for creation of elements of infocommunication systems // Proc. "Nanostructures in the condensed environments" – Minsk. – 2011. – pp. 368-373. (in Russian).
Digital Logic Elements on the Base of Particular Josephson Tunnel Junctions
Rostyslav Krysko, Mychaylo Tyhanskyi
Semiconductor Electronics Department, Lviv Polytechnic National University, UKRAINE, Lviv, 12 S. Bandery Str., E-mail: rostyslawk@gmail.com
The paper
proposes the development of the logic elements ‘OR’, ‘AND’
and ‘NO’ using Josephson
cryotrons based on S-I-S tunnel junctions
(semiconductor-isolator-semiconductor).
The circuits of such logic elements and the control method of their
logic state with help of enter signals of electric current were
elaborated. The
mathematical
model
was
developed
by
which
it
is
possible
to
describe
the
commutation
process
in
logic
elements
‘OR’,
‘AND’
and
‘NO’
while
managing
their
state
with
the
help
of
two
enter
signals,
and
to
conduct
the
calculations
of
transitive
characteristics
(time
dependences
of
tension
on
the
element)
of
the
logic
elements
with
the
working
temperature
= 4,2 К. Provision
of the enter signals of electric current was modeled by means of
mathematic function
and
Heaviside’s function.
Using the property of S-I-S (semiconductor-isolator-semiconductor) of the tunnel junction the digital logic element can be developed. The working principle of such logic elements as ‘OR’, ‘AND’ and ‘NO’ on the base of Josephson tunnel junctions was described. переходів.
The
model
parameters
for
such
logic
elements,
where
logical
junctions
as
“0”
”1”
та “1”
”0”
were
determined.
It
was
shown
that
managing
the
logic
elements
state
as
a
result
of
the
controlling
signal
actions
in
the form of impulses of electric current provides the stability of
working mode and satisfies the demands which must be done in such
logic elements.
Переклад зроблено Горьковою Н.Г., центр іноземних мов «Universal Talk», www.utalk.com.ua