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<TR>
<TD WIDTH=100% HEIGHT=28 >
<P ALIGN=left><FONT FACE="arial"><B><span class="style4">ELECTROCONDUCTIVE
POLYMER MICROSENSOR ELECTRODES (EPMEs</span></B><FONT COLOR="#ffffff"><B>)</B></FONT></FONT></P>
</TD>
</TR>
</TABLE>
</DL>
<FONT FACE="arial"><B>(Conductive
Polymer Sensors)</B></FONT>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=2 CELLSPACING=5>
<TR>
<TD WIDTH=234 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>EPME
DEVICES</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>Gold</B></FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>Platinum</B></FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>Sensory
Material</B></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Monolithic-Polyaniline</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Au-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Pt-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polyaniline</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Monolithic-Polypyrrole</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Au-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Pt-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polypyrrole</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Monolithic-Poly(3-hexylthiophene)</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Au-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Pt-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>poly(3-hexylthiophene)</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Combined
Differential-Polyaniline</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Au-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Pt-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polyaniline</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Combined
Differential-Polypyrrole</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Au-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Pt-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polypyrrole</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Combined
Differential-Poly(3-hexylthiophene)</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Au-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Pt-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>poly(3-hexylthiophene)</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Fully
Differential-Polyaniline</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Au-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Pt-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polyaniline</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Fully
Differential-Polypyrrole</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Au-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Pt-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polypyrrole</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Fully
Differential-Poly(3-hexylthiophene)</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Au-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Pt-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>poly(3-hexylthiophene)</B></I></FONT></FONT></P>
</TD>
</TR>
</TABLE>
</CENTER>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=2 CELLSPACING=2>
<TR>
<TD width="216" HEIGHT=22>
<P ALIGN=CENTER><A HREF="#introduction"><FONT SIZE=1 STYLE="font-size: 8pt">Introduction
and Background</FONT></A></P>
</TD>
<TD width="317">
<P ALIGN=CENTER><A HREF="#applications"><FONT SIZE=1 STYLE="font-size: 8pt">Applications
of EPMEs</FONT></A></P>
<P ALIGN=CENTER><A HREF="#specifications"><FONT SIZE=1 STYLE="font-size: 8pt">Technical
Specifications</FONT></A></P>
<P ALIGN=CENTER><A HREF="#methods"><FONT SIZE=1 STYLE="font-size: 8pt">Methods</FONT></A></P>
<P ALIGN=CENTER><A HREF="#appnotes"><FONT SIZE=1 STYLE="font-size: 8pt">Application
Notes</FONT></A></P>
</TD>
<TD width="97">
<P ALIGN=CENTER><A HREF="pricelist.html#epmes"><FONT SIZE=1 STYLE="font-size: 8pt">Price
List</FONT></A></P>
</TD>
</TR>
</TABLE>
</CENTER>
<HR>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=5 CELLSPACING=0>
<COL WIDTH=256*>
<TR>
<TD WIDTH=100%>
<P><A NAME="introduction"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic1" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<B>Introduction and Background</B></P>
<UL>
<P STYLE="margin-bottom: 0in"></P>
<P STYLE="margin-bottom: 0in"><FONT FACE="arial"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø</FONT></B></FONT></FONT><FONT STYLE="font-size: 8pt">
<span class="style3">EPMEs comprise fully contiguous and specifically
adhered (via covalent bond formation) thin films of
electroconductive polymers fabricated on inert interdigitated
microsensor electrode array devices (IMEs). These EPME devices
serve as chemically sensitive solid-state transducers in various
chemical and biological sensors and as gas/vapor sensors.</span></FONT></P>
<P class="style3" STYLE="margin-bottom: 0in"><B><FONT COLOR="#00af00">Ø
</FONT></B>EPMEs are your direct means for the simultaneous
measurement of the electrical conductivity (conductimetric
sensor), electrode potential (potentiometric sensor), and
current (amperometric sensor) of thin, electroconductive polymer
films on <A HREF="imes.html">IME
devices</A>. With the
associated Electroconductive Polymer Sensor Interrogation System
(EPSIS 240II CS), you are provided with the computerized sensor
interrogation and data acquisition hardware for the simultaneous
study of the electrochemical and electrical characteristics of
the electroactive polymer films - electroconductive polymer
sensor technology.</P>
<P class="style3" STYLE="margin-bottom: 0in"><B><FONT COLOR="#00af00">Ø
</FONT></B>Microfabricated from magnetron
sputter-deposited gold or e-gun vapor-deposited platinum, these
devices are supplied with three possible proprietary
formulations of electroconductive polymers - polyaniline,
polypyrole and poly(3-hexylthiophene).</P>
<P class="style3" STYLE="margin-bottom: 0in">Only
10 mincron line and space dimensions are available for the EPME
devices. However, our three device configurations are available;
Monolith (M), Combined Differential (CD), and Full Differential
(FD). The EPME is supplied in the form of a fully packaged (P)
electrode with leadwires attached and the device encapsulated
using a chemically resistant epoxy resin to seal the bonding
pads into a delrin electrode body.</P>
<P class="style3" STYLE="margin-bottom: 0in"><B><FONT COLOR="#00af00">Ø
</FONT></B>EPME transducers possessing surface-available
carboxylic acid (-COOH), primary amine (-NH2), primary alcohol
(-OH), or free sulfhydryl (thiol) (-SH) groups for the specific
attachment and immobilization of biologically active
polypeptides, enzymes, antibodies, enzyme-linked antibodies, DNA
fragments, as well as inorganic and other indicator molecules
may also be obtained under our <A HREF="babs.html">Bioanalytical
Biosensors</A>
product line or under joint product development contract. </P>
</UL>
<P class="style3" STYLE="margin-bottom: 0in"> </P>
<P><span class="style3"><A HREF="#top"><FONT face-arial>Back to Top</FONT></A></span></P>
<HR>
<H3><A NAME="applications"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic2" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<span class="style3">Applications of EPMEs</span></H3>
<P class="style3"><A HREF="news.html">Applications
of EPMEs</A> in
research and product development include:</P>
<UL class="style3">
<P STYLE="margin-bottom: 0in"><B><FONT COLOR="#00af00">Ø
</FONT>In chemical and biosensor research and development:</B>
The high sensitivity of these organic, polymeric, semiconducting
films to changes in redox state, along with the solid state
construction and small device size, make these devices ideally
suited for research and development of chemical and biosensor
applications.<BR>
<BR>
</P>
<P STYLE="margin-bottom: 0in"><B><FONT COLOR="#00af00">Ø
</FONT>In volatile organic compound (VOC) sensor research and
development:</B> The ability of these polymer films to
reversibly absorb and desorp organic vapors from within their
microstructure with simultaneous change in electrical
conductivity makes these sensors well suited for the development
of VOC probes.<BR>
<BR>
</P>
<P><B><FONT COLOR="#00af00">Ø
</FONT>As chemoresistive sensor elements in multi-element arays:</B>
Several differently responding, but singularly non-specific,
sensor elements may be assembled into multi-element arrays for
the recognition and monitoring of analytes of interest.</P>
</UL>
<P class="style3"><A HREF="#top"><FONT face-arial>Back to Top</FONT></A></P>
<HR>
<H3 class="style3"><A NAME="specifications"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic3" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
Technical Specifications</H3>
<P class="style3"><B><FONT COLOR="#00af00">Ø </FONT>Chip
Substrate: Schott D263 Borosilicate Glass</B></P>
<BLOCKQUOTE class="style3">Dielectric
Constant, Epsilon(r) at 1 MHz = 6.7</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Dielectric
Loss Angle, tan delta, at 1 MHz = 61 x 10<SUP>-4</SUP></BLOCKQUOTE>
<BLOCKQUOTE class="style3">Electrical
Resistivity (50 Hz) (250 C) = 1.6 x 108 ohm cm</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Coefficient
of Linear Thermal Expansion, * 20-300 = 7.2 x 10<SUP>-6</SUP> K<SUP>-1</SUP></BLOCKQUOTE>
<BLOCKQUOTE class="style3">Refractive
Index at 20 C, ne ( Lambda = 546.1 nm) = 1.5249</BLOCKQUOTE>
<P class="style3"><B><FONT COLOR="#00af00">Ø
</FONT>Metallization: 100 Å Ti / 1000 Å Au or P</B>t</P>
<BLOCKQUOTE class="style3">Digit
length, d, (microns) = 4,985</BLOCKQUOTE>
<BLOCKQUOTE class="style3">No.
of digit pairs per sensor, N = 50</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Digit
Width, a, (microns) = 10</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Interdigit
Space, a, (microns) = 10</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Spatial
Periodicity, lambda, (microns) = 40</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Zaretsky
Meander Length, M, (cm) = 24.93 cm</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Center
Line or Serpentine Length (cm) = 49.55 cm</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Cell
Constant (cm<SUP>-1</SUP>) = 0.040 cm<SUP>-1</SUP></BLOCKQUOTE>
<P class="style3"><B><FONT COLOR="#00af00">Ø
</FONT>IME Chip Dimensions <I>(l x w x t</I>) for the Un-packaged
Die (EPME devices are available in FD design only)</B></P>
<BLOCKQUOTE class="style3">Full
Differential, FD = 1.75 x 1.00 x 0.05 cm</BLOCKQUOTE>
<P class="style3"><B><FONT COLOR="#00af00">Ø
</FONT>Packaging (all EPME devices are fully packaged)</B></P>
<BLOCKQUOTE class="style3">Electrode
Body: Delrin</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Encapsulant:
Epoxy header.</BLOCKQUOTE>
<BLOCKQUOTE class="style3">Leadwires:
28 AWG stranded copper, shielded, and PVC jacketed.</BLOCKQUOTE>
<P class="style3"><A HREF="#top"><FONT face-arial>Back to Top</FONT></A></P>
<HR>
<H3 class="style3"><A NAME="methods"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic4" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
Methods</H3>
<P class="style3">Chemoresistance
responses of EPME devices may be obtained form a wide assortment
of interogation hardware. These fall into three categories.</P>
<UL class="style3">
<P STYLE="margin-bottom: 0in"><B><FONT COLOR="#00af00">Ø
</FONT></B>Dedicated Electroconductive Polymer Sensor
Interrogation System (EPSIS).<BR>
<BR>
</P>
<P STYLE="margin-bottom: 0in"><B><FONT COLOR="#00af00">Ø
</FONT></B>DC Resistance Measurements performed with:<BR>
Simple
multimeters set to resistance mode with operator recording of
displayed data.<BR>
Sophisticated multimeters with data logging
capability or computer interfaced (commonly RS232, IEEE488, or
USB).<BR>
Electrometers with a computer interface (commonly
RS232, IEEE488, or USB).<BR>
<BR>
</P>
<P><B><FONT COLOR="#00af00">Ø
</FONT></B>Complex Impedance response performed with:<BR>
Combined
Function Generator and Lock-in Amplifier.<BR>
Transfer Function
Analyzers.<BR>
AC-Impedance Analyzers. </P>
</UL>
<P class="style3"><A HREF="#top"><FONT face-arial>Back to Top</FONT></A></P>
<HR>
<H3 class="style3"><A NAME="appnotes"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic5" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
Application Notes</H3>
<P class="style3">For
further information, request Application Notes:</P>
<BLOCKQUOTE class="style3"><B><FONT COLOR="#00af00">Ø
</FONT></B>IME1 - Interdigitated Microsensor Electrodes:
Applications and References.</BLOCKQUOTE>
<BLOCKQUOTE class="style3"><B><FONT COLOR="#00af00">Ø
</FONT></B>IME2 - Conductimetric Urea Biosensor Formed From
Interdigitated Microsensor Electrodes</BLOCKQUOTE>
<BLOCKQUOTE class="style3"><B><FONT COLOR="#00af00">Ø
</FONT></B>IME3 - Cleaning Procedures</BLOCKQUOTE>
<P class="style1"><span class="style2"><FONT STYLE="font-size: 8pt">Electroconductive Polymer
Microsensor Electrode (EPME<SUP>TM</SUP>) is the trade name for a
family of non-specific sensor devices developed by ABTECH.</FONT></span></P>
<P><A HREF="#top"><FONT face-arial SIZE=-1>Back to Top</FONT></A></P> </TD>
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