Spectroscopic characterization
Materials
characterization,
identification
of
chemical
groups,
colorimetry,
estimation
of
optic
gap
using
Infrared
spectroscopy
(FTIR),
micro-Infrared
spectroscopy
(μ-FTIR)
and
UV-Vis
Spectrophotometry.
Studied
spectra
range
NIR
(9000-4000
cm
-1
),
MIR
(4000-400
cm
-1)
,
FIR
(400-80 cm
-1
) and UV-Vis (200-900 nm).
Instrumentation
•
AGILENT
TECHNOLOGIES
CARY
670
Infrared
spectrometer
(FTIR)
able
to
measure transmittance and reflectivity in the range 9000-80 cm-1 which includes:
o
Specular reflectance unit with incidence angle 10°
o
ATR unit with diamond crystal (Diamond ATR) operating at MIR and FIR
o
Low temperature unit for the range -150 up to 500 °C
o
Environmental
Chamber
for
controllable
atmosphere
(up
to
1500
psi)
and
temperature (up to 1000 oC) conditions operating also in vacuum
•
AGILENT
TECHNOLOGIES
CARY
620
micro-Infrared
spectroscopy
(μ-FTIR)
connectable
to
the
CARY
670
system
able
to
measure
transmittance
and
reflectivity
with the following sensors:
o
MCT, range 9000-450 cm-1, line scan and mapping
o
Focal
Plane
Array
FPA
imaging
64×64,
for
simultaneous
capture
of
4096
independent
spectra.
An
ATR
unit
for
continuous
monitoring
in
contact
with
sample is also available.
•
Perkin-Elmer
Spectrum1000
Infrared
spectrometer
(FTIR),
able
to
measure
transmittance and reflectivity in the range 4000-400 cm-1 which includes:
o
Variable
Angle
Specular
Reflectance
for
mirror
reflectance
measurements
on
samples with smooth surface.
o
Diffuse
Reflectance
for
scattering
measurements
on
samples
with
rough
surfaces.
•
Perkin-Elmer
i-Series
micro-Infrared
spectroscopy
(μ-FTIR)
connectable
to
the
Spectrum1000,
with
sensor
MCT,
able
to
measure
transmittance
and
reflectivity
in
the range 4000-550 cm-1, line scan and mapping.
•
Perkin-Elmer
Lambda18
UV-Vis
spectrometer
with
double
beam
and
double
monochromator
in
the
range
187-900
nm.
Includes
integrated
sphere,
deuterium
and
tungsten
lamps
automatically
switched.
Both
bulk
samples
and
powders
can
be
characterized.
•
Sample preparation instrumentation:
o
Leica
RM2155
automatic
microtome
for
hard
materials
at
thicknesses
0.5-60
μm.
o
PRESI
LE
CUBE
automatic
grinding
machine
for
smoothing
and
glazing
of
samples with rotation speed 150-300 rpm.
Publications
1
.
Tsampali,
E.,
Tsardaka,
E.-C.,
Pavlidou,
E.,
Paraskevopoulos,
K.M.,
Stefanidou,
M.
Comparative
study
of
the
properties
of
cement
pastes
modified
with
nano-silica
and
Nano-Alumina
(2019) Solid State Phenomena, 286, pp. 133-144.
2
.
Grigoriadou,
I.,
Pavlidou,
E.,
Paraskevopoulos,
K.M.,
Terzopoulou,
Z.,
Bikiaris,
D.N.
Comparative
study
of
the
photochemical
stability
of
HDPE/Ag
composites
(2018)
Polymer Degradation and Stability, 153, pp. 23-36.
3
.
Metaxa,
C.,
Ozsdolay,
B.D.,
Zorba,
T.,
Paraskevopoulos,
K.,
Gall,
D.,
Patsalas,
P.
Electronic
and
optical
properties
of
rocksalt-phase
tungsten
nitride
(B1-WN)
(2017)
Journal
of
Vacuum
Science
and
Technology
A:
Vacuum,
Surfaces
and
Films,
35
(3),
art. no. 031501.
4
.
Pandoleon,
P.,
Kontonasaki,
E.,
Kantiranis,
N.,
Pliatsikas,
N.,
Patsalas,
P.,
Papadopoulou,
L.,
Zorba,
T.,
Paraskevopoulos,
K.M.,
Koidis,
P.
Aging
of
3Y-TZP
dental
zirconia
and
yttrium
depletion
(2017)
Dental
Materials,
33
(11),
pp.
e385-
e392.
5
.
Stefanaki,
E.-C.,
Hatzikraniotis,
E.,
Vourlias,
G.,
Chrissafis,
K.,
Kitis,
G.,
Paraskevopoulos,
K.M.,
Polymeris,
G.S.
Thermal
Stability
Study
from
Room
Temperature
to
1273
K
(1000
°C)
in
Magnesium
Silicide
(2016)
Metallurgical
and
Materials
Transactions
A:
Physical
Metallurgy
and
Materials
Science,
47
(10),
pp.
5146-5158.
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