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<TITLE>ABTECH Scientific, Inc., - MICRODISC ELECTRODE ARRAYS </TITLE>
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<TABLE WIDTH=650 BORDER=0 CELLPADDING=0 CELLSPACING=0 STYLE="page-break-before: always">
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<TR>
<TD WIDTH=650 >
<P ALIGN=left><B><FONT COLOR="#000000">SINGLE DISC ELECTRODES</FONT></B><FONT SIZE=1><SUP>TM</SUP></FONT><B><FONT COLOR="#ffffff">
(SDEs)<BR>
</FONT><span class="style10">(Microfrabricated Single Disc
Electrodes)</span></B></P>
</TD>
</TR>
</TABLE>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=2 CELLSPACING=0>
<COL WIDTH=44*>
<COL WIDTH=36*>
<COL WIDTH=37*>
<COL WIDTH=43*>
<COL WIDTH=45*>
<COL WIDTH=51*>
<TR>
<TD WIDTH=17%>
<P ALIGN=CENTER><A HREF="gifs\sdeschematic.jpg"><img src="file:///C|/a-leads/abtech/gifs/sdes.jpg" width="82" height="74" alt="x"></A></P> </TD>
<TD WIDTH=14%>
<P ALIGN=CENTER><A HREF="gifs\sdecomposite.jpg"><IMG SRC="gifs/sdes.jpg" NAME="Graphic3" ALIGN=BOTTOM WIDTH=90 HEIGHT=75 BORDER=0></A></P> </TD>
<TD WIDTH=14%>
<P ALIGN=CENTER><A HREF="gifs\sdes.jpg"><IMG SRC="gifs/sdes.jpg" NAME="Graphic11" ALIGN=BOTTOM WIDTH=90 HEIGHT=75 BORDER=0></A></P> </TD>
<TD WIDTH=17%>
<P ALIGN=CENTER><A HREF="gifs\sdeschematic.jpg"><IMG SRC="gifs/sdes.jpg" NAME="Graphic2" ALIGN=BOTTOM WIDTH=99 HEIGHT=76 BORDER=0></A></P> </TD>
<TD WIDTH=18%>
<P ALIGN=CENTER><A HREF="gifs\sdecomposite.jpg"><IMG SRC="gifs/sdes.jpg" NAME="Graphic9" ALIGN=BOTTOM WIDTH=90 HEIGHT=75 BORDER=0></A></P> </TD>
<TD WIDTH=20%>
<P ALIGN=CENTER><A HREF="gifs\sdes.jpg"><IMG SRC="gifs/sdes.jpg" NAME="Graphic10" ALIGN=BOTTOM WIDTH=90 HEIGHT=75 BORDER=0></A></P> </TD>
</TR>
</TABLE>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=3 CELLSPACING=0>
<COL WIDTH=77*>
<COL WIDTH=87*>
<COL WIDTH=33*>
<COL WIDTH=59*>
<TR>
<TD WIDTH=22% BGCOLOR="#cccccc">
<P ALIGN=CENTER class="style8"><FONT FACE="Verdana, Arial">MDEA
DEVICES</FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#cccccc"><span class="style8"><font face="Verdana, Arial"> Number of Discs</font></span></TD>
<TD WIDTH=26% BGCOLOR="#cccccc">
<P ALIGN=CENTER class="style8"><FONT FACE="Verdana, Arial">Disc
dimensions</FONT></P> </TD>
<TD WIDTH=14% BGCOLOR="#cccccc">
<P ALIGN=CENTER class="style8"><FONT FACE="Verdana, Arial">Active
Area</FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#cccccc">
<P ALIGN=CENTER class="style8"><FONT FACE="Verdana, Arial">Conductor</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=22% BGCOLOR="#e2ebf3">
<P class="style8"><FONT FACE="Verdana, Arial">SDE Au 0.1</FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#eeded9"><span class="style9"><font face="Verdana, Arial"> 1 disc</font></span></TD>
<TD WIDTH=26% BGCOLOR="#eeded9">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.357 cm diameter</FONT></P> </TD>
<TD WIDTH=14% BGCOLOR="#f0f0f0">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.10 cm<SUP>2</SUP></FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#f2e4ca">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">Au</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=22% BGCOLOR="#e2ebf3">
<P class="style9"><FONT FACE="Verdana, Arial"><B>SDE Au 0.01</B></FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#eeded9"><span class="style9"><font face="Verdana, Arial"> 1 disc</font></span></TD>
<TD WIDTH=26% BGCOLOR="#eeded9">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.036 cm diameter</FONT></P> </TD>
<TD WIDTH=14% BGCOLOR="#f0f0f0">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.01 cm<SUP>2</SUP></FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#f2e4ca">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">Au</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=22% BGCOLOR="#e2ebf3">
<P class="style9"><FONT FACE="arial"><B>SDE Pt 0.1</B></FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#eeded9"><span class="style9"><font face="Verdana, Arial"> 1 disc</font></span></TD>
<TD WIDTH=26% BGCOLOR="#eeded9">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.357 cm diameter</FONT></P> </TD>
<TD WIDTH=14% BGCOLOR="#f0f0f0">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.10 cm<SUP>2</SUP></FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#f2e4ca">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">Pt</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=22% BGCOLOR="#e2ebf3">
<P class="style9"><FONT FACE="Verdana, Arial"><B>SDE Pt 0.01</B></FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#eeded9"><span class="style9"><font face="Verdana, Arial"> 1 disc</font></span></TD>
<TD WIDTH=26% BGCOLOR="#eeded9">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.036 cm diameter</FONT></P> </TD>
<TD WIDTH=14% BGCOLOR="#f0f0f0">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial">0.01 cm<SUP>2</SUP></FONT></P> </TD>
<TD WIDTH=19% BGCOLOR="#f2e4ca">
<P ALIGN=CENTER class="style9"><FONT FACE="Verdana, Arial"> Pt</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=22% BGCOLOR="#e2ebf3">
<P class="style9"><BR>
</P> </TD>
<TD WIDTH=19% BGCOLOR="#eeded9"> </TD>
<TD WIDTH=26% BGCOLOR="#eeded9">
<P ALIGN=CENTER class="style9"><BR>
</P> </TD>
<TD WIDTH=14% BGCOLOR="#f0f0f0">
<P ALIGN=CENTER class="style9"><BR>
</P> </TD>
<TD WIDTH=19% BGCOLOR="#f2e4ca">
<P ALIGN=CENTER class="style9"><BR>
</P> </TD>
</TR>
</TABLE>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=2 CELLSPACING=0>
<COL WIDTH=52*>
<COL WIDTH=54*>
<COL WIDTH=51*>
<COL WIDTH=37*>
<COL WIDTH=19*>
<COL WIDTH=43*>
<TR>
<TD WIDTH=20% HEIGHT=22></TD>
<TD WIDTH=21%>
<P ALIGN=CENTER><FONT SIZE=1>SDE Brochure (PDF)</FONT></P>
</TD>
<TD WIDTH=20%>
<P ALIGN=CENTER><A HREF="pricelist.html#sdes"><FONT SIZE=1>SDE
Prices</FONT></A></P>
</TD>
<TD WIDTH=14%>
<P ALIGN=CENTER><A HREF="pricelist-cart.html" target="pricelist"><FONT SIZE=1>Price List</FONT></A></P>
</TD>
<TD WIDTH=7%></TD>
<TD WIDTH=17%></TD>
</TR>
<TR>
<TD WIDTH=20% HEIGHT=20>
<P ALIGN=CENTER><A HREF="#introduction"><FONT SIZE=1>Introduction
and Background</FONT></A></P>
</TD>
<TD WIDTH=21%>
<P ALIGN=CENTER><A HREF="#applications"><FONT SIZE=1>Applications
of SDEs</FONT></A></P>
</TD>
<TD WIDTH=20%>
<P ALIGN=CENTER><A HREF="#specifications"><FONT SIZE=1>Technical
Specifications</FONT></A></P>
</TD>
<TD WIDTH=14%>
<P ALIGN=CENTER><A HREF="#accessories"><FONT SIZE=1>SDE
Accessories</FONT></A></P>
</TD>
<TD WIDTH=7%>
<P ALIGN=CENTER><A HREF="#methods"><FONT SIZE=1>Methods</FONT></A></P>
</TD>
<TD WIDTH=17%>
<P ALIGN=CENTER><A HREF="#appnotes"><FONT SIZE=1>Application
Notes</FONT></A></P>
</TD>
</TR>
</TABLE>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=2 CELLSPACING=0>
<COL WIDTH=14*>
<COL WIDTH=52*>
<COL WIDTH=0*>
<COL WIDTH=100*>
<COL WIDTH=6*>
<COL WIDTH=18*>
<COL WIDTH=28*>
<COL WIDTH=4*>
<COL WIDTH=11*>
<COL WIDTH=19*>
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<TD COLSPAN=10>
<H3 align="justify"><A NAME="introduction"></A><IMG SRC="tbullet.gif" NAME="Graphic5" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<FONT SIZE=3><FONT FACE="arial">Introduction and Background</FONT></FONT></H3>
<div align="justify">
<BLOCKQUOTE><FONT FACE="arial"><span class="style1"><span class="style2"><span class="style3"><span class="style4"><span class="style9"><B><FONT COLOR="#00af00">Ø
</FONT></B>Single Disc Electrodes (SDEs) are inert,
microfabricaed electrodes formed from a microlithographically patterned
insulator-on-conductor-on-insulator configuration. They are
designed for the study of electrical and electrochemical properties
of thin polymeric films and coatings, for applications in
microelectrochemistry, for electrical/electrochemical impedance
spectroscopy, and for chemical and biological sensor development.</span></span></span></span></span></FONT></BLOCKQUOTE>
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>Microfabricated from 100 nm magnetron
sputter-deposited gold (Au), e-gun vapor-deposited platinum (Pt), or
conductive indium tin oxide (ITO) on an electronics grade
borosilicate glass, these devices are supplied in two disc
diameters. A 500nm thin
silicon nitride layer is applied over the conductor and is
microlithographically windowed using reactive ion etching to
reveal a precisely patterned window to the metal beneath and a
bonding pad. SDEs are avalable as un-packaged die. </FONT> </BLOCKQUOTE>
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>SDE chips of gold, platinum or ITO are available
with 0.357 cm diameter (A=0.10 cm<SUP>2</SUP>) or 0.0357 cm diameter (A=0.01cm<SUP>2</SUP> ) discs. </FONT> </BLOCKQUOTE>
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>In research and product development, these devices are
widely used for electrochemical, bio-electrochemical, biofuel cell, electrical and electrochemical impedacne spectroscopy.</FONT></BLOCKQUOTE>
<BLOCKQUOTE class="style9"> </BLOCKQUOTE>
</div>
<BLOCKQUOTE class="style9"><p align="justify"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø</FONT></B> These electrodes/devices are particulary necessary when a <span class="style8">precisely defined area</span> electrode is required.</FONT></p>
</BLOCKQUOTE>
<div align="justify">
<BLOCKQUOTE><A HREF="#top"><FONT face-arial SIZE=-1>Back to Index</FONT></A></BLOCKQUOTE>
</div>
<HR align="JUSTIFY">
<H3 align="justify"><A NAME="applications"></A><FONT SIZE=3><IMG SRC="tbullet.gif" NAME="Graphic6" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
Applications of SDEs</FONT></H3>
<P align="justify" class="style9"><FONT FACE="arial">Applications of MDEAs in
research and product development include:</FONT></P>
<div align="justify">
<BLOCKQUOTE class="style9"> </BLOCKQUOTE>
</div>
<BLOCKQUOTE class="style9"><p align="justify"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>As a substrate electrode for the deposition of electroactive polymer thin films, alkane thiol monlayers, for electrodeposition of carbon nanotubes, for SAM innobilization of enzymes and enzyme-linked antibodies for biosensor development.</FONT></p>
<p align="justify"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>For the study of electrical and electrochemical
impedance spectroscopy of organic thin films and coatings and
carbon nanotubes. </FONT> </p>
</BLOCKQUOTE>
<div align="justify">
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>As a capacitance probe during the deposition or cure
of an organic thin film or polymer e.g. Films based on
Langmuir-Blodgett thin film deposition or cure of an epoxy.</FONT></BLOCKQUOTE>
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>In modern microelectrochemistry -- as generator and
collector electrodes in electrochemical amplification or in the
performance of electroanalysis in high impedance environments.
The microdisc electrode format allows accommodates radial
diffusion . </FONT> </BLOCKQUOTE>
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>In conductimetry studies. To determine the conductance
of low conductivity media and in conductimetric titrations.</FONT></BLOCKQUOTE>
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>In coatings research and development. For example, to
study the transport of water into and through a coating or to
study the physical aging of the polymer upon environmental
exposure or accelerated aging.</FONT></BLOCKQUOTE>
</div>
<BLOCKQUOTE class="style9"> </BLOCKQUOTE>
<BLOCKQUOTE><A HREF="#top"><FONT face-arial SIZE=-1>Back to Index</FONT></A></BLOCKQUOTE>
<HR>
<H3><A NAME="specifications"></A><FONT FACE="arial"><FONT SIZE=3><IMG SRC="tbullet.gif" NAME="Graphic7" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
Technical Specifications</FONT></FONT></H3> </TD>
</TR>
<TR>
<TD ROWSPAN=11 WIDTH=2% VALIGN=TOP></TD>
<TD WIDTH=19%>
<P class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT>Chip Substrate:</B></FONT></P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial"><B>Schott
D263 Borosilicate Glass</B></FONT></P> </TD>
<TD COLSPAN=3>
<P class="style9"><BR>
</P> </TD>
<TD WIDTH=6% ROWSPAN=11 VALIGN=TOP></TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">Dielectric
Constant, Epsilon(r) at 1 MHz</FONT></P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">6.7</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">Dielectric
Loss Angle, tan delta, at 1 MHz</FONT></P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">61
x 10-4</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">Electrical
Resistivity (50 Hz) (250 C) </FONT> </P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1.6
x 10^8 ohm cm</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">Coefficient
of Linear Thermal Expansion, * 20-300 Deg C</FONT></P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">7.2
x 10^-6 K^-1</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">Refractive
Index at 20 C, ne ( Lambda = 546.1 nm)</FONT></P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1.5249</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><BR>
</P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT>Metallization: </B></FONT> </P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><FONT FACE="arial"><B>100
Å Ti|W / 1000 Å Au or Pt and ITO = 10 Ohms/sq</B></FONT></P> </TD>
<TD COLSPAN=3>
<P class="style9"><BR>
</P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P class="style9"><BR>
</P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT>Insulating Top Layer: </B></FONT> </P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9">Silicon Nitride
(Si<SUB>3</SUB>N<SUB>4</SUB>)</P> </TD>
<TD COLSPAN=3>
<P class="style9"><BR>
</P> </TD>
</TR>
<TR>
<TD WIDTH=19%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P ALIGN=LEFT class="style9"><BR>
</P> </TD>
<TD COLSPAN=3>
<P class="style9"><BR>
</P> </TD>
</TR>
<TR>
<TD ROWSPAN=14 WIDTH=2% VALIGN=TOP></TD>
<TD COLSPAN=2 HEIGHT=23>
<P class="style9"><BR>
</P> </TD>
<TD WIDTH=41%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=2>
<P ALIGN=LEFT class="style9"><FONT FACE="arial"><B>No
of Discs</B></FONT></P> </TD>
<TD WIDTH=13%>
<P ALIGN=LEFT class="style9"><FONT FACE="arial"><B>Electroactive
Area (cm<SUP>2</SUP>)</B></FONT></P> </TD>
<TD colspan="2">
<P ALIGN=LEFT class="style9"><FONT FACE="arial"><B>Geometric
Area (cm<SUP>2</SUP>)</B></FONT></P></TD>
<TD ROWSPAN=14 WIDTH=1% VALIGN=TOP></TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9" STYLE="font-style: normal; font-weight: medium"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø</FONT></B>
SDE 0.10 </FONT></P> </TD>
<TD WIDTH=41%>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">A
single disc, </FONT><FONT FACE="Verdana, Arial">0.357 cm diameter</FONT><FONT FACE="arial">.</FONT></P> </TD>
<TD COLSPAN=2>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1</FONT></P> </TD>
<TD WIDTH=13%>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1.0
x10<SUP>-1</SUP></FONT></P> </TD>
<TD colspan="2">
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1.0
x10<SUP>-1</SUP></FONT></P></TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9" STYLE="font-style: normal; font-weight: medium"><FONT FACE="arial"><FONT COLOR="#00af00">Ø</FONT>
SDE 0.01</FONT></P> </TD>
<TD WIDTH=41%>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">A
single disc, </FONT><FONT FACE="Verdana, Arial">0.0357 cm diameter</FONT></P> </TD>
<TD COLSPAN=2>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1</FONT></P> </TD>
<TD WIDTH=13%>
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1.0
x10<SUP>-2</SUP></FONT></P> </TD>
<TD colspan="2">
<P ALIGN=LEFT class="style9"><FONT FACE="arial">1.0
x10<SUP>-2</SUP></FONT></P></TD>
</TR>
<TR>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9"><BR>
</P> </TD>
<TD WIDTH=41%>
<P ALIGN=LEFT class="style9"><BR>
</P> </TD>
<TD COLSPAN=2>
<P ALIGN=LEFT class="style9"><BR>
</P> </TD>
<TD WIDTH=13%>
<P ALIGN=LEFT class="style9"><BR>
</P> </TD>
<TD colspan="2">
<P ALIGN=LEFT class="style9"><BR>
</P></TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT>SDE Chip Dimensions</B></FONT></P> </TD>
<TD WIDTH=41%>
<P ALIGN=CENTER class="style9"><FONT FACE="arial"><B>Un-packaged
Die</B></FONT></P> </TD>
<TD COLSPAN=5>
<P ALIGN=CENTER class="style9"><FONT FACE="arial"><B>Packaged
Die</B></FONT></P> </TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9"><BR>
</P> </TD>
<TD WIDTH=41%>
<P ALIGN=CENTER class="style9"><FONT FACE="arial"><B>(l
x w x t)</B></FONT></P> </TD>
<TD COLSPAN=5>
<P ALIGN=CENTER class="style9"><FONT FACE="arial"><B>(l
x w x t)</B></FONT></P> </TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9" STYLE="font-style: normal; font-weight: medium"><FONT FACE="arial">SDE
X.XX</FONT></P> </TD>
<TD WIDTH=41%>
<P ALIGN=CENTER class="style9"><FONT FACE="arial">1.00
x 0.50 x 0.05 cm</FONT></P> </TD>
<TD COLSPAN=5>
<P ALIGN=CENTER class="style9"><FONT FACE="arial">N.A.</FONT></P> </TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9"><BR>
</P> </TD>
<TD WIDTH=41%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=5>
<P class="style9"><BR>
</P> </TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT>Packaging</B></FONT></P> </TD>
<TD WIDTH=41%>
<P class="style9"><BR>
</P> </TD>
<TD COLSPAN=5>
<P class="style9"><BR>
</P> </TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9"><FONT FACE="arial">Electrode
Body:</FONT></P> </TD>
<TD COLSPAN=6>
<P ALIGN=LEFT class="style9">N.A.</P> </TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=20>
<P class="style9"><FONT FACE="arial">Encapsulant:</FONT></P> </TD>
<TD COLSPAN=6>
<P ALIGN=LEFT class="style9">N.A.</P> </TD>
</TR>
<TR>
<TD COLSPAN=2 HEIGHT=21>
<P class="style9"><FONT FACE="arial">Leadwires:</FONT></P> </TD>
<TD COLSPAN=6>
<P ALIGN=LEFT class="style9">N.A.</P> </TD>
</TR>
<TR>
<TD COLSPAN=10>
<BLOCKQUOTE><A HREF="#top"><FONT face-arial SIZE=-1>Back to Index</FONT></A></BLOCKQUOTE> </TD>
</TR>
</TABLE>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=3 CELLSPACING=0>
<COL WIDTH=97*>
<COL WIDTH=70*>
<COL WIDTH=88*>
<TR>
<TD COLSPAN=3 WIDTH=100%>
<HR>
<H3 ALIGN=LEFT STYLE="margin-top: 0cm; font-style: normal; font-weight: medium"><A NAME="accessories"></A>
<FONT FACE="arial"><FONT SIZE=3><IMG SRC="tbullet.gif" NAME="Graphic8" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<B>MDEA Accessories</B></FONT></FONT></H3> </TD>
</TR>
<TR>
<TD WIDTH=38% BGCOLOR="#cccccc">
<P ALIGN=CENTER><BR>
</P> </TD>
<TD WIDTH=27% VALIGN=TOP BGCOLOR="#cccccc">
<P ALIGN=CENTER><FONT FACE="arial"><B>Wand</B></FONT></P>
<P ALIGN=CENTER><FONT COLOR="#000080"><A HREF="picts/iamepl.jpg"><FONT COLOR="#000080"><IMG SRC="picts/iameps.jpg" NAME="Graphic16" ALIGN=BOTTOM WIDTH=90 HEIGHT=67 BORDER=1></FONT></A></FONT></P> </TD>
<TD WIDTH=35% BGCOLOR="#cccccc">
<P ALIGN=CENTER><FONT FACE="arial"><B>Test Clip</B></FONT></P>
<P ALIGN=CENTER><FONT COLOR="#000080"><FONT FACE="arial"><B><A HREF="gifs\IMESTC.gif"><FONT COLOR="#000080"><IMG SRC="gifs/imestcs.jpg" NAME="Graphic1" ALIGN=BOTTOM WIDTH=54 HEIGHT=72 BORDER=1></FONT></A></B></FONT></FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=38% BGCOLOR="#e4ecf5">
<P class="style9"><FONT FACE="arial"><B>Lead Length</B></FONT></P> </TD>
<TD WIDTH=27% BGCOLOR="#e6e6ff">
<P ALIGN=CENTER class="style9" STYLE="font-weight: medium"><FONT FACE="arial">4.5
cm</FONT></P> </TD>
<TD WIDTH=35% BGCOLOR="#f5eeeb">
<P ALIGN=CENTER class="style9"><FONT FACE="arial">N/A</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=38% BGCOLOR="#e4ecf5">
<P class="style9"><FONT FACE="arial"><B>Connector Type</B></FONT></P> </TD>
<TD WIDTH=27% BGCOLOR="#e6e6ff">
<P ALIGN=CENTER class="style9" STYLE="font-weight: medium"><FONT FACE="arial">Gold
Plated</FONT> Pins </P> </TD>
<TD WIDTH=35% BGCOLOR="#f5eeeb">
<P ALIGN=CENTER class="style9"><FONT FACE="arial">Gold Plated
Pins</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=38% BGCOLOR="#e4ecf5">
<P class="style9"><FONT FACE="arial"><B>Number of Conductors</B></FONT></P> </TD>
<TD WIDTH=27% BGCOLOR="#e6e6ff">
<P ALIGN=CENTER class="style9" STYLE="font-weight: medium"><FONT FACE="arial">4</FONT></P> </TD>
<TD WIDTH=35% BGCOLOR="#f5eeeb">
<P ALIGN=CENTER class="style9"><FONT FACE="arial">4</FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=38% BGCOLOR="#e4ecf5">
<P class="style9"><FONT FACE="arial"><B>Lead</B></FONT></P> </TD>
<TD WIDTH=27% BGCOLOR="#e6e6ff">
<P ALIGN=CENTER class="style9" STYLE="font-weight: medium"><FONT FACE="arial">Rigid
Wand</FONT> - PCB </P> </TD>
<TD WIDTH=35% BGCOLOR="#f5eeeb">
<P ALIGN=CENTER class="style9"><FONT FACE="arial">Spring Loaded Pinch Clip </FONT></P> </TD>
</TR>
<TR>
<TD WIDTH=38% BGCOLOR="#e4ecf5">
<P class="style9"><FONT FACE="arial"><B>Part No.</B></FONT></P> </TD>
<TD WIDTH=27% BGCOLOR="#e6e6ff">
<P ALIGN=CENTER class="style9"><FONT COLOR="#00af00"><FONT FACE="arial"><B>IME 4C Chip Carrier</B></FONT></FONT></P> </TD>
<TD WIDTH=35% BGCOLOR="#f5eeeb">
<P ALIGN=CENTER class="style9"><FONT COLOR="#00af00"><FONT FACE="arial"><B>STC 4P</B></FONT></FONT> </P> </TD>
</TR>
</TABLE>
</DL>
<BLOCKQUOTE STYLE="text-align: left"><FONT SIZE=1> </FONT><A HREF="#top"><FONT face-arial SIZE=-1>Back
to Index</FONT></A></BLOCKQUOTE>
<TABLE WIDTH=650 BORDER=0 CELLPADDING=0 CELLSPACING=0>
<COL WIDTH=256*>
<TR>
<TD WIDTH=100%>
<H3><A NAME="methods"></A><IMG SRC="tbullet.gif" NAME="Graphic13" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<FONT SIZE=3><FONT FACE="arial">Methods</FONT></FONT></H3>
<BLOCKQUOTE>
<div align="justify"><FONT FACE="arial"><span class="style9"><B><FONT COLOR="#00af00">Ø
</FONT></B>Films or coatings may be applied to the SDE device by
dip coating, spin casting, spray painting, air-brushing, brush
painting, by Langmuir-Blodgett thin film deposition technique, by
electropolymerization, and/or by molecular self assembly.</span></FONT></div>
</BLOCKQUOTE>
<div align="justify">
<BLOCKQUOTE class="style9"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B><FONT COLOR="#000000">The chip may be immersed in
organic, or aqueous medium to a level above the geometric area
occupied by microdiscs. </FONT></FONT> </BLOCKQUOTE>
<BLOCKQUOTE class="style9" STYLE="font-weight: medium"><FONT FACE="arial"><B><FONT COLOR="#00af00">Ø
</FONT></B>Electrical contact is made via the bonding pad provided on
one end of the long aqxis of the chip.</FONT> Bonding may be via low temperatre soldering (650-700 C), conductive epoxy, </BLOCKQUOTE>
</div>
<P ALIGN=justify class="style9"> <A HREF="#top">Back to
Index</A></P>
<HR align="JUSTIFY">
<P ALIGN=justify><A NAME="appnotes"></A><IMG SRC="tbullet.gif" NAME="Graphic14" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<B><FONT SIZE=3>Application Notes </FONT></B> </P>
<div align="justify">
<BLOCKQUOTE class="style9">For further information, request
Application Notes or you may <A HREF="files.html">download
application note files</A>:</BLOCKQUOTE>
<BLOCKQUOTE class="style9" STYLE="margin-left: 2.08cm; margin-right: 2.08cm"><FONT FACE="arial">Single Disc Electrodes (SDE<SUP>TM</SUP>) is the tradename for a family
of devices developed by ABTECH. Also called microelectrodes, these devices are microfabricated (using microelectronics
fabrication techniques) to form patterns of conductors deposited
on an insulating substrate chip.</FONT></BLOCKQUOTE>
</div>
<P ALIGN=LEFT><A HREF="#top"><FONT face-arial SIZE=-1>Back to Index</FONT></A></P> </TD>
</TR>
<TR>
<TD WIDTH=100%>
<HR>
</TD>
</TR>
</TABLE>
</DL>
</P>
<P ALIGN=CENTER STYLE="margin-left: 1cm"><FONT FACE="Verdana, Arial"><FONT SIZE=1></FONT></FONT></P>
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