electrospinning polymer fibers -...
TRANSCRIPT
![Page 1: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/1.jpg)
Perform an audio check by going to
Tools > Audio > Audio Setup Wizard
The webinar will begin at 1pm Eastern Time
Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience to Undergraduates
May 15, 2014
![Page 2: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/2.jpg)
![Page 3: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/3.jpg)
Chat Box
![Page 4: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/4.jpg)
Chat Box
Send Questions
and Message
Here
![Page 5: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/5.jpg)
Begin Recording
The webinar will begin at 1pm Eastern Time
Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience to Undergraduates
May 15, 2014
![Page 6: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/6.jpg)
Hosted by MATEC NetWorks www.matecnetworks.org
Brought to You By:
The NACK Network, established at the Pennsylvania State
College of Engineering, and funded in part by a grant from
the National Science Foundation (DUE 1205105).
Brought to you by:
![Page 7: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/7.jpg)
Dr. Nicholas Pinto Professor in the Department of Physics and
Electronics at the University of Puerto Rico, Humacao
Campus.
• His research is in the field of conducting polymers
for use as gas sensors, devices and in organic
electronics at the nanoscale.
• He is also engaged in efforts to integrate
undergraduate research into the Senior Lab course
Moderator: Mike Lesiecki
MATEC
Today’s Presenter
![Page 8: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/8.jpg)
Electrospinning polymer fibers: A simple technique of introducing nanoscience to undergraduates
Nicholas J. Pinto
Dept. of Physics and Electronics
University of Puerto Rico-Humacao
![Page 9: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/9.jpg)
http://www.freeworldmaps.net/centralamerica/puertorico/location.html
![Page 10: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/10.jpg)
Bonding p 2 eV
10 eV
En
erg
y
D.L. Smith, MRS Bull 29, 647 (2004).
Polyaniline Electronic structure
Conducting polymers/Metal oxides
Figure 1: Chemical structure of 4-polyethylenedioxythiophene (PEDOT)
doped with poly(styrene sulfonic acid) (PSS) PEDOT-PSS blend (Baytron P).
PSS
PEDOT
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
Figure 1: Chemical structure of 4-polyethylenedioxythiophene (PEDOT)
doped with poly(styrene sulfonic acid) (PSS) PEDOT-PSS blend (Baytron P).
PSS
PEDOT
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
Poly(3-hexylthiophene)
[P(ND12OD-T2)]n - ActivInkTM
SnO2
ZnO
Antibonding s
Antibonding p
Bonding p
Bonding s
![Page 11: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/11.jpg)
Conductivity of Electronic Polymers
106
104
102
100
10-2
10-4
10-6
10-8
10-10
10-12
10-14
10-16
Ag, CuFeMg
In, Sn
Ge
Si
AgBr
Glass
Diamond
Nylon
Quartz
INS
UL
AT
OR
SS
EM
ICO
ND
UC
TO
RS
ME
TA
LS
INC
RE
AS
ING
DO
PIN
G L
EV
EL
S
Conductivity increases with increased doping
S/cm
Doped trans-(CH)x
[105 S/cm]
Doped polyaniline
[103 S/cm]
trans-(CH)x
[10-5 S/cm]
Polyaniline
[10-10 S/cm]
![Page 12: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/12.jpg)
Electrospinning
High Voltage
Supply
Polymer
solution
Cathode
Fibers
![Page 13: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/13.jpg)
![Page 14: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/14.jpg)
![Page 15: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/15.jpg)
Polystyrene in THF (MW 212,000) – 20kV/ 20cm Average diameter 60 nm
MacDiarmid, Johnson, Pinto, Synth. Metals 119, 27 (2001)
![Page 16: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/16.jpg)
(a) (b)
(c) (d)
H H
FF F
H
n
F
F
m
Figure 1: Chemical structure of 4-polyethylenedioxythiophene (PEDOT)
doped with poly(styrene sulfonic acid) (PSS) PEDOT-PSS blend (Baytron P).
PSS
PEDOT
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
Figure 1: Chemical structure of 4-polyethylenedioxythiophene (PEDOT)
doped with poly(styrene sulfonic acid) (PSS) PEDOT-PSS blend (Baytron P).
PSS
PEDOT
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
SO3 -
SO3
SO3SO
3SO3 -
SO3 -SO
3
H
SO3 H
SO3
H
H H
H
SSS S
O O
S
O O O O
S
O O
S
O O
O O
S
O O
O O
S
O O
+++
(b)
(a)
PVDF-TrFE/PEDOT-PSSA
![Page 17: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/17.jpg)
(a) (b)
(c) (d)
(e) (f)
PVDF-TrFE/PEDOT-PSSA
Pinto, Macromolecules 42, 7924 (2009).
![Page 18: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/18.jpg)
Diameter comparison between human hair and e-spun fiber
N.J. Pinto (ACS Book Chapter 2010)
![Page 19: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/19.jpg)
Substrates
SiO2
![Page 20: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/20.jpg)
Isolated polymer nanofibers
![Page 21: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/21.jpg)
5mm
50 mm
![Page 22: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/22.jpg)
0 5 10 15 mm
250
0
-250
nm
I V
(b)
(a)
VB (V)
0 1 2 3 4 5
I (n
A)
0
10
20
30
s = 0.08 S/cm
Simple resistor (PANi-HCSA)
Pinto, Am. J. Phys. 76, 1163 (2008).
![Page 23: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/23.jpg)
0 500 1000 1500 2000
R/R
N
0
1
2
3
N2
methanol
T(s)
0 500 1000 1500 2000
R/R
N
0
1
2
3
methanol
N2
Gas sensor (PANi-HCSA)
Pinto, Johnson, MacDiarmid, Sens. Actuator B 129 , 621 (2008).
![Page 24: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/24.jpg)
EF EF
EC
EV
EF
EC
EV
EF
EC
EV
EF
EC
EV
EF
EF
EF
Metal semiconductor
before contact
Metal semiconductor
after contact
Metal semiconductor
junction under reverse
bias
Metal semiconductor
junction under forward
bias
Metal
n-doped Si
Schottky Diode
![Page 25: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/25.jpg)
Schottky nano-diode (contd.) n-doped Si/SiO2 (r=0.1-1.0 W-m)
![Page 26: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/26.jpg)
Vbias
I SiO2n-doped Si
Au electrode
Electrospun fiber
cleaved surface
Schottky diode using PANi nanofibers
Au contact
Si-- contact
fiber
![Page 27: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/27.jpg)
Device characteristics at 300 K
• Ifor/Irev = 30
• Ideality factor n 4
• 0.4 V < Von < 0.6 V
• b = 0.49 V
Vbias (V)
-1.0 -0.5 0.0 0.5 1.0
I (n
A)
-2
-1
0
1
2
![Page 28: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/28.jpg)
Diode / Sensor
Vbias (V)
-2 -1 0 1 2
I (n
A)
0.0
0.4
0.8
1.2
1.6
vac
vac
NH3
Pinto, Johnson, MacDiarmid, Appl. Phys. Lett. 89, 033505 (2006).
![Page 29: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/29.jpg)
Field effect transistor ([P(ND12OD-T2]n*)
* poly[N,N-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyll-alt-5,5-(2,2-bithiophene)]
Rosado, Pinto, IJCE 6, 175 (2013).
VDS (V)
0 10 20 30 40I D
S (
nA
)
0.0
0.1
0.2
0.3
0.4
0.5
0 V
40 V
60 V
80 V
100 V
![Page 30: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/30.jpg)
VDS
(V)
0 20 40 60 80 100
I DS (
nA
)
0
50
100
150
200
70V
30V0V
Effect of UV radiation ([P(ND12OD-T2]n*)
Rosado, Pinto, PMSE Preprints 109, 1 (2013).
t (s)
0 100 200 300 400
R (
GW
)
4
8
UVOFF
UVON
![Page 31: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/31.jpg)
50mm
P3HT SnO2
Crossed nanofibers: n-SnO2 and p-P3HT
![Page 32: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/32.jpg)
0 1 2 3 4 5
I DS
(nA
)
0.00
0.04
0.08
0.12
VDS (V)
-5 -4 -3 -2 -1 0
I DS
(nA
)
-0.6
-0.4
-0.2
0.0
5V
5V
0V0V
-5V
-5V
Crossed nanofibers: n-SnO2 and p-P3HT
VG VDS
VGS IDS
Si++
![Page 33: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/33.jpg)
V (V)-4 -2 0 2 4
I (p
A)
0
100
200
300
400
LUMO
HOMO
EC
EV
EF
EG=2.2V
EG=3.6V
Crossed nanofibers: n-SnO2 and p-P3HT
Pinto, Agarwal, Appl. Phys. Lett. 94, 083504 (2009).
V (V)-4 -2 0 2 4
I (p
A)
-60
-40
-20
0
20
40
60
80
![Page 34: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/34.jpg)
Crossed nanofibers: n-SnO2 and PEDOT-PSSA
75 mm
SnO2
PEDOT-PSSA
VG VDS
VGS IDS
Si++
![Page 35: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/35.jpg)
V (V)
-1.0 -0.5 0.0 0.5 1.0
I ( m
A)
-6
-4
-2
0
2
4
6
I ( m
A)
-0.2
-0.1
0.0
0.1
0.2
-40V
0V
+40V
V (V)
-1.0 -0.5 0.0 0.5 1.0
I ( m
A)
0.0
0.5
1.0
1.5
T (s)
0.0 0.1 0.2 0.3
V (
V)
-2
0
2
Carrasquillo, Pinto, Mat. Sci. Engg. B 177, 805 (2012).
Crossed nanofibers: n-SnO2 and PEDOT-PSSA
![Page 36: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/36.jpg)
P3HT
PEDOT
Crossed nanofibers: p-P3HT and PEDOT-PSSA
![Page 37: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/37.jpg)
VDS
(V)
-4 -2 0
I DS (
nA
)
-0.4
-0.2
0.0
VGS
(V)-40 -20 0
I DS (
pA
)
-40
-20
0
0V, -10V
-20V
-30V
-40V
-50V
Crossed nanofibers: p-P3HT and PEDOT-PSSA
VDS
VGS IDS
Si++
![Page 38: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/38.jpg)
VTS
+1V
0V
-1V
-2V
-3V
-4V
-5V
-50 -40 -30 -20 -10 0
I T (
nA
)
-1.2
-0.8
-0.4
0.0
VGS
(V)
-50 -40 -30 -20 -10 0
I DS (
nA
)
-0.6
-0.4
-0.2
0.0
VTS
(V)
-4 -2 0
m (
cm2
/Vs)
10-3
10-2
-4.9 eV
-5.0 eV
-5.1 eV
Au(D) P3HT PEDOT P3HT Au(S)
-5.1 eV E
VTS = 0
VTS < 0
E
Crossed nanofibers: p-P3HT and PEDOT-PSSA
VDS
IDS
VGS VTS 1 2
3
4
![Page 39: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/39.jpg)
Conclusions
Electrospinning is a simple technique to make fibers
Diodes, FET’s, Sensors
Some of these devices are multifunctional
All of the work presented was done by High School students and Undergraduates
Acknowledgements
National Science Foundation
DoD
![Page 40: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/40.jpg)
Final Questions
Please type all questions into the Chat Box
![Page 41: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/41.jpg)
Whether you are joining us live or watching the recorded version of this webinar, please take 1 minute to provide your feedback and
suggestions.
How Can We Better Serve You?
http://questionpro.com/t/ABkVkZQFNq
![Page 42: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/42.jpg)
To access this recording, slides, and handout visit
nano4me.org/webinars.php
Webinar Recordings
![Page 43: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/43.jpg)
If you attended the live version of this
1.5 hour webinar and would like a
certificate of participation, please email:
Certificate of Participation
![Page 44: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/44.jpg)
Aug 11 – 14: Nanotechnology Course Resources II: Patterning,
Workshop Characterization, and Applications
June 4 – 6: MNT Conference, Albuquerque, NM
July 21 – 24: HI-TEC Conference, Chicago, IL
Want more events? Visit www.nano4me.org/webinars for more
details about these and other upcoming workshops and webinars in
2014.
2014 Events Calendar
![Page 45: Electrospinning Polymer Fibers - Networknano4me.org/webinar/webinars/pdf/NACK_webinar_Electrospinning_… · Electrospinning Polymer Fibers: A Simple Technique of Introducing Nanoscience](https://reader034.vdocument.in/reader034/viewer/2022042318/5f071f447e708231d41b6a60/html5/thumbnails/45.jpg)
Thank you for attending the NACK Network webinar:
Electrospinning Polymer Fibers:
A Simple Technique of Introducing
Nanoscience to Undergraduates
Thank you!