CNT and organic FET based two-way transducers of the (bio)electric signals Dr. Ing Rostyslav Sklyar, Independent Researcher, Lviv, Ukraine
Relationships between the measured quantity and specific variants of an OFET device OFET types transducing quantity
O rg anic liquid
CNT
ion ic c ur re nt
transduced m o lecular medium
n erv e im pu lse
Sup ere xcha n ge
O rg a nic sem ic on d.
elec tr o nic c u rr ent
ohm ic
sem ico nd .
Types of the Currents- Electronic and Ionic (Molecular)
Array of Nanowires
At this size scale chemical control over molecular properties is highly developed. FETs fabricated at these wiring densities might exhibit nonstatistical and perhaps unpredictable, behavior.
Examples of Molecular Transport Junction
The observed conduction in molecular junction usually differs radically from that in traditional ohmic wires. Even with no applied bias voltage, the energy landscape between donor and acceptor components is asymmetric.
The Transducing Mechanism: Implantable (Channel) and External (Nanocoil). Equivalent SuOFETTr as the inclusion of a SuOFET device into the nerve fibre. SuOFETTr
circuit of a of vortical magnetic field H around a biochemical medium.
A- implantation of the whole SuOFET variant; B- tapping of the signal on the external SuOFET by implantable wire contacts.
A
myel in
B
i
SuOFET
c hannel‘s
Vg Voutbio
nerve NI impulse
Draine transmitting Cin/2
gDS
ionic currents
SuOFET SF ET
× JJ
gate
Source
visual and m un
receiving unit
Rgate
- +
°
d bi t
d
d it
i
(
~
Nerve fibre, s ynap ses of neu rons, or nanowir e
el
SuOFE T
Draine
g DS C0
L
H
VGS
(Bio)Telemetry
i
…
E0
Gate
Cryostat following external units
in vivo
VGS
unit
R
Cin/2
axons
Fi 1 A SFET b
nanocoil
× JJ
C in/2
R gat e
- + Cin /2
Gate
°
V GS
Sourc e
Cryosta t
Shield
JJ- indic ate s Josephson junct ion.
lb h i
Q hω (Q ) = G + T G 1 − 1 − (ibio / I 0 ) 2 C 2e
)
2
(E N) =4kTSuFET γ noise /gdn
and
gdn =I0/VC
Superconducting Organic and CNT FET Variants An organic SuFET device and its electrodes.
Schematic of the elect rolyte gate measurement.
A 4 by 4 c rossed N W-FET array
U out
i
i bio
Vo ut
Operational pattern of a parallel SuOFETTr.
OFET o f organic single crystals with bottomcontact configuration.
A- the schematic structure of the fabricated OFET; B- transfer characteristics of the single crystal FET device at a source-drain voltage Vd of -30 V. A
B
A
bio
B
Q, nS
400 -
t
200
i
-
I bi o
0
1
Vsup=const
t
Vout
V g, V
Dependence of the Received Signals’ Parameters on the Mode of SuOFETTr’s Functioning Mode
Serial
Medium
NI, el. current
external
∫i
=1control or
sign
sensing impulse
∫ signals→bio and Molecules
Parallel implantable
i sign=i signf 1)+ i sign (f 2)+… +i sign (f N)
external
di sign/dt, di sign/dx
implantable
Σi sign=1 network or 1 fibre
variation of Ss→concentr. of
chem. molecules
ΣSs=1 type of
ΣSs=Σbio and
molec.
chem. molec.
molecules decoding the propagation of the
DNA, nanowire
signal along DNA’s spirals or nanowire
signals of nucleoted recognition
space and length dynamic on both spirals or wires
4 nucleoteds → 4 outputs
The author’s contact information: Verchratskogo st. 15-1, Lviv 79010 Ukraine. Tel. +38 097 3365495 Fax:+38 0322 769613 Webpage: www.tsp.lviv.ua/~sklyar