CNT and organic FET based two-way transducers ofthe (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

Organic liquid CNT Superex-

change Organic

semicond.

ion ic current electronic current

molecular nerve

im pulse ohm ic sem ico nd .

transducingquantity

transducedmedium

Types of the Currents- Electronic and Ionic (Molecular)

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.

Array of Nanowires 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.

SuOFETTr as the inclusion of a SuOFET device into the nerve fibre.

A- implantation of the whole SuOFET variant; B- tapping of the signal on the external SuOFET by

implantable wire contacts.

Equivalent circuit of a SuOFETTr of vortical magnetic field H around a biochemical medium.

nanocoil

×gDS

SuOFET

Cin/2 Rgate

…

Cin/2 VGS

C0

Cryosta t

Gate

R

~E0

L - + °

Shield

Source

Draine

JJ

JJ- indicates Josephson junct ion.

H

Nerve fibre, s ynap ses of neu rons, or nanowir e i el

in vivo

nerveimpulse

myel in

c hannel

gate

Vg

ioniccurrents

SF ET

axons (Bio)Telemetry

following external units

Fi 1 A SFET b d bi t d d it i l b h i

transmit-tingunit

receivingunit

visualand m

un

SuOFET

×gDS

SuOFET

Cin/2 Rgate

Cin/2 VGS

Cryostat

Gate- + °Source

Draine

JJ

A

VoutNI

B

ibio ‘s

The Transducing Mechanism: Implantable (Channel) and External (Nanocoil).

( )20 )/(11

2)( Ii

eQ

CQV bio

GTGGS −−+= ωh (EN)2=4kTSuFET γnoise/gdn and gdn=I0/VC

Superconducting Organic and CNT FET VariantsAn organic SuFET device

and its electrodes. Schematic of the electrolyte

gate measurement.

OFET of organic single crystals with bottom-contact 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.

Uout

i bio

A B

Vout

A Bi bio

Vg, V

Q, nS

0 1

400

200t

-

-

I

t

i bio

Vout

Vsup=const

A 4 by 4 crossed NW-FET array

Operational pattern of a parallel SuOFETTr.

Dependence of the Received Signals’Parameters on the Mode of SuOFETTr’s

Functioning

Serial Parallel Mode

Medium external implantable external implantable

NI, el.

current

i sign=1control or

sensing impulse

i sign=i signf1)+ i sign

(f2)+… +i sign (fN) di sign/dt, di sign/dx

Σi sign=1 network or

1 fibre

Molecules signals→bio and

chem. molecules

variation of

Ss→concentr. of

molecules

ΣSs=1 type of

molec.

ΣSs=Σbio and

chem. molec.

DNA,

nanowire

propagation of the

signal along DNA’s

spirals or nanowire

decoding the

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 3365495Fax:+38 0322 769613

Webpage: www.tsp.lviv.ua/~sklyar