INCREASE OF THE
COMPETITIVENESS OF THE EXISTING ESR LABORATORY FROM
THE
MULTIFUNCTIONAL AND NANOSTRUCTURED SYSTEMS DEPARTMENT, INCDTIM
Activities
Results
Personal
Impact
Objectives:
The general
objective of this
project is the modernization of the existing ESR laboratory
from the
multifunctional and nanostructured systems department, INCDTIM
Cluj-Napoca.
The
modernization of the existing ESR laboratory will give rise to:
(i) development
of CD activity at INCDTIM Cluj-Napoca, since it will permit
the
development of the subjects which could be touched inside the top level
research on European and national stage. These subjects imply the
development
and the characterization of new materials and multifunctional products
(ii) certification of the ESR
laboratory in order
to be able to produce specific services
(iii) increase of the
quality and
diversification in the educational area through the partnerships
with the
universities by means of the training programs in magnetic resonance
domain
(iv) involving of
the young specialists in the magnetic resonance area who will
represent and important reservoir of high qualified personal
(v) setting up of a
magnetic resonance research
base with multiple users in the
Northwest
region.
The
specific objectives staggered
on the project’s time schedule:
I. Acquisition of a last generation and highly performant electron spin resonance (ESR) spectrometer and the necessarily accessories
II. Testing
the spectrometer capacities and bringing it to a proper use.
The project’s goal is to enhance
the
competitiveness of the CDI activities in the magnetic resonance
spectroscopy
area through the new scientific infrastucture.
This fact will
permit:
(i) a fast integration in
the
European research area and particularly the increase of the
competitiveness in
the priority scientific domain- Nanosciences and Nanotechnologies, the
multifunctional materials
(ii)
implication in
the most advanced
experimental techniques of the magnetic resonance area
(iii) maximum
valorification of the very qualified human potential existing in this
area at
INCDTIM Cluj-Napoca
Activities:
In correlation with the
above specific objectives, we propose the following activities which could ensure their
achievement:
I. Acquisition
of a electron spin resonance (ESR)
spectrometer.
A.1. Fitting out of the ESR laboratory.
A.2.
Aquisition of the ESR spectrometer.
II. Testing
the spectrometer capacities and bringing it to a proper use.
A.3.
Assembling, testing of the
spectrometer and the training of the specialists.
The
above activities imply the following issues:
A.1. - assurance of
the utilities necesarily to the most propitious
conditions for the scientific research by means of the prologement of
the water
and electricity facilities, voltage stabilization and the laboratory
air
conditioning.
A.2.- getting in
touch with the enterprises which build the
spectrometers
- setting
up of the legal procedures for the international auction
- signing up
of the contract
- aquisition
and the transport of the spectrometer.
A.3. - reception of
the ESR spectrometeer and of the
accesories
- assembling
and bringing the spectrometer in to a proper use- will be done by the
specialized team from the enterprise
- testing of the
specified performance parameters- will be
done by the specialized team from the enterprise
- demonstration
of the spectrometer
capacities and setting up the preliminary experimental
measurements
- training of the specialized persons
from the laboratory who will perform the experiments- will be done by
the
specialized team from the enterprise
Results:
(i) development
and the modernization of the CD infrastructure in the ESR
spectroscopy
area
(ii) creation
of the new
working places. Two young physicists will be hired in order to
cover the
necesarily scientific activities as a result of the spectrometer
aquisition.
(iii) increase
of
the research capacities.
It will be
setted up new
applied research research topics in accordance with the European
tendencies
such as: nanotechnologies
and nanosciences, multifunctional materials (nanometrology,
spin dynamics, magnetic and
crystalline interactions, structural morphology in nanomaterials
applied in
nanoelectronics,multifunctional materials for the efficient conversion
of the
solar energy, polymeric nanocomposites for shieding and sensors), protection
of the environement (cantitative and qualitative analysis of the
pollution
factors and resulted products from the accidental irradiation),
control of the food
quality (ESR
spectroscopy is a standard method recognize by European Commission for
the
quality control of irradiated products which are exported), medicine
and biology (characterization
of the covered magnetic nanoparticles with different surfactants for
very high
temperature and of
the drugs as a result of the molecular encapsulation).
(Iv) increase
of
the international visibility. The existence
of the new infrastructure will gives
new opportunities for the international cooperations and in this way we
can
deeply imply in the european research projects. The goal is to get
100000 EUR/
year.
(v)
increase od
the efficiency in the CD activities – by means of
the enlargement of the scientific
subjects and the number of projects in which it will be possible to be
implied.
(vi)
setting up of
modern facilities for the training and the formation of young
researchers. We will
contribute to the practical
education of the PhD students in the ESR spectroscopy, its aplications
and the
development of new specific methods.
(vii) setting up of a magnetic
resonance research base with
multiple users in the North-West region.
(viii) new
knowledges, methods
and experimental procedures.
(ix) studies,
analysies, mesurements, testings– as resulting from the demands of
productive sector
and industrial beneficiaries.
Obtained results::
The main objective of the project is the increase of the competitiveness of the existing ESR laboratory from the multifunctional and nanostructured systems department, INCDTIM Cluj-Napoca, through the acquisition of a last generation and high performant ESR spectrometer.
1. Digital electronics
Hall field controller
- Operating range 50 G – 20 kG
- Field setting resolution of 24 bit
- Number of points for field sweep from 2 to 120000
- Sweep range 0 – 20 kG in one scan
- Stability better than 10 mG/h
- Fast field scans with 320 sec/points
- 1 mG resolution
- 1.5 – 15 kG range
- Probe diameter not more than 6 mm
- High speed field tracking of 500 G / sec
- Modulation frequency range 80 Hz – 100 kHz, continuously variable
- Signal detection with amplitude resolution of 24 bit
- Signal detection bandwidth of 300 kHz
- Detection of 1st and 2nd harmonic
- Detection of in- and out-of-phase signal
- Double modulation techniques
- Time constant from 0.01 msec to 5 sec
- Modulation amplifier compatible with all resonators in all frequency bands
- Sweep width 200 G
- Scan speed 0.5 msec to 5 sec
2. Microwave units
X-band microwave bridge- Operating range 9.2 – 9.9 GHz
- Tune picture width 10 – 80 MHz with electronic zoom
- 600 mW maximum power
- 200 mW levelled power in full operating range
- 60 dB power attenuation in 1 dB steps
- Signal amplifier with at least 6 MHz bandwidth
- Integrated frequency counter with 1 kHz resolution
- Compatible with Helium and Nitrogen VT systems
- Optical grid with more than 50 % transmission
- 10 mm sample access
- Integrated modulation coils
- Modulation amplitude up to 20 G
- Automatic tuning
- Modulation amplitude of up to 20 G at 100 kHz
- Weak-pitch sensitivity of 3000 : 1
- Absolute sensitivity of 109 spins/G
- Perpendicular mode for measuring allowed transitions
- Parallel mode for measuring forbidden transitions
- 10 mm sample access
- Integrated modulation coils
- Modulation amplitude up to 10 G
- Automatic tuning
- Compatible with Helium and Nitrogen VT systems
- 10 mm sample access
- Automatic tuning
- Compatible with Helium and Nitrogen VT systems
- Operating frequency 34 GHz +,- 150 MHz
- 50 MHz tune picture width
- 100 mW maximum power
- 60 dB power attenuation in 1 dB steps
- Signal amplifier with 6 MHz bandwidth
- 3 mm sample access
- Variable frequency
- Variable coupling
- Integrated modulation coils
- Modulation amplitude up to 20 G
- Variable temperature 3.8 – 300 K, continuously
- Compatible with Helium and Nitrogen VT systems
- Weak-pitch sensitivity of 2000 : 1
- Oxygen in air sensitivity of 200 : 1
3. Magnetic Field Units
- Electro magnet
- 72 mm air gap
- Maximum field of 14 kG
- Homogeneity of 10 mG at 3400 G in a volume of 10x10x20 mm3
- Weight less than 1900 kg
- Pole tips for maximum field of 17 kG at 56 mm air gap
- Magnet power supply of stability class 10-6 ”
- Heat exchanger for magnet and power supply
4. Instrument Control Software
Software to control all instrument parametersData acquisition with the following modes:
- Field sweep
- Time sweep
- Rapid scan
- Power sweep
- Temperature sweep
- Field vs. time
- Field vs. power
- Field vs. temperature
- Time vs. field
- Field vs. goniometer angle
- Rapid scan vs. time
5. Data Analysis Software
Spectrum processing- Integration with automatic baseline subtraction
- Integral normalization
- Filtered differentiation
- Smoothing routines
- Peak-picking with position and distance indication
- g-factor transformation
- P1/2 analysis of saturation curves
- Spectrum algebra for add, subtract, multiply, divide
- Line shape fit for derivative and absorption signals
- Time constant fit
- Spectrum transformation with stretch and shift function
- Baseline correction with polynom and spline functions
- Quick and easy cursor read-out of line position, line width, signal amplitudes and g-factor
- Spectrum display as line, points, histogram, contour, stack-plot
- Spectrum export as ASCII, post script, TIFF, JPEG, PDF
- Simulation package for liquids, powers and single crystals
- Isolated spins systems
- Coupled spin systems
- Simulation of parallel mode spectra
- Unlimited number of electron and nuclear spins
- Spectrum optimization
- Multiple isotopes
- Spectrum calculation based on exact matrix diagonalization.
6. Variable Temperature Equipment
- Helium base VT system compatible with X- and Q-band resonators Temperature range 3.8 – 300 K
- Nitrogen based VT system compatible with X- and Q-band resonators Temperature range 100 – 700 K
7. Further Possible System Extensions
Upgrade to X- and Q-band ENDORUpgrade with L-, S-, K- and W-Band Microwave Frequencies
Upgrade to Pulse-EPR, Pulse-ENDOR and Pulse-ELDOR
Disemination:
1. O.Raita, D.Toloman, A.Popa, M.Stan, Al.Darabont and L.M.Giurgiu
EPR INVESTIGATIONS OF Sn1-xFexO2 NANOPOWDERS
Journal of Physics, in press
2.A.Popa, M. Jivanescu, D Toloman, O. Raita, L. M. Giurgiu
FERROMAGNETIC RESONANCE MEASUREMENTS ON Co NANOWIRES
Journal of Physics, in press
3.D Toloman, A R Biris, A Popa, O Raita, L M Giurgiu, I Ardelean
RAMAN and EPR STUDIES OF CALCIUM-PHOSPHATE GLASSES DOPED WITH MANGANESE IONS
Journal of Physics, in press
1. Adriana POPA, Dana TOLOMAN, Oana RAITA, Manuela STAN, Alexandru DARABONT, Liviu GIURGIU
MAGNETIC RESONANCE INVESTIGATION OF Co2+ IONS IN NANOPARTICLES OF ZnO PREPARED IN Air AND Ar ATMOSPHERE
Procc. 10-th“ International Balkan Workshop on Applied Physics”, Constanta, p.90, (2009)
2.D.Toloman, A.R.Biris, A.Popa, O.Raita, L.M.Giurgiu, I.Ardelean
RAMAN and EPR STUDIES of xMnO(1-x)[1.5P2O5 CaO] GLASS SYSTEM
Procc. 10-th“ International Balkan Workshop on Applied Physics”, Constanta, p.89, (2009)
3. O.Raita, A.Popa, D.Toloman, Al.Darabont, M.Stan and L.M.Giurgiu
MAGNETIC RESONANCE INVESTIGATIONSOF Sn1-XFeXO2 NANOPOWDERS
Procc. 10-th“ International Balkan Workshop on Applied Physics”, Constanta, p.89, (2009)
|
Nr
crt |
Institution |
Name |
Scientific
title |
Atribute
in the project |
Age |
|
1. |
INCDTIM
Cluj-Napoca |
Dr. Liviu
Mihail Giurgiu |
CS I |
Project
Director |
63 |
|
2. |
INCDTIM
Cluj-Napoca |
Dr. Sorin
Farcas |
CS
II |
Responsable
for new equipments buying |
62 |
|
3. |
INCDTIM
Cluj-Napoca |
Dr.
Adriana Paula Popa |
CS
III |
Responsable
for instalation the new equipment |
31 |
|
4. |
INCDTIM
Cluj-Napoca |
Dr. Oana
Raita |
CS
III |
Assistent for instalation and
Performing
testing of the spectrometer Laboratory
certification |
30 |
|
5. |
INCDTIM
Cluj-Napoca |
Dr.
Ovidiu Pana |
CS I |
Responsable
for performing testing |
53 |
|
6. |
INCDTIM
Cluj-Napoca |
Drd. Dana
Toloman |
CS
III |
Asistent
for Q-band instalation and Unit Endor |
30 |
|
7. |
INCDTIM
Cluj-Napoca |
Drd. Izabella Craciunescu |
CS
III |
Asistent
for instalation variable temperature unit |
30 |
The scientific
impact related to the aquisition of the ESR
spectrometer consists of:
(i) facilitiy
to be implied in the following new research domains in accordance
with the
European tendencies:
-
characterization by ESR of the nanometrology in
nanoparticles and magnetic/metallic nanowires
-
characterization of the spin dynamics and
magnetic/cristalline interactions in the
nanomaterials applied in nanoelectronics, the
efficient conversion of the solar energy
and those specific to the photosynthesis process
- investigation
of the morphology and the structure of the
nanocomposites resulting
from the molecular encapsulation of the drugs and covered magnetic
nanoparticles used in very high temperature
(ii) realization for the first time in
Romania of
the following new applications:
- ESR
experiments at high frequency/magnetic field (Q-band).
The
investigations will be directed towards:
(i) the elucidation and the separation of the inner core- outer shell
effects
which are characteristics to the magnetic naoparticles (ii) the
increase of the
precision of the nanometrological characterization of metallic/magnetic
nanoparticles (iii) the spin dynamics characterization as function of
frequency
and temperature in the nanostructures applied to spintronics in order
to
improuve the specific properties of the electronic components in nano
range
(iv) the precise identification and the characterization of the
dynamical
properties of the paramagnetic centers which appear in the new
multifunctional
materials during identificarea precisa si
caracterizarea proprietatilor dinamice ale centrilor (produsilor
de the
process of the solar energy conversion in electricity. These results
will be
compared with thwe obtained ones in the frame of the bilateral and
intergovernemental agreements with the Physical-Chemistry Institute
from
Stuttgart University and the magnetic resonance department from the
Demokritos
Institute, Athens, respectively.
(iii)
the
achievement of a portofolio for the applications of ESR spectroscopy.
With respect to
this, we intend
to set up the new ESR methods applied in the material, environmental
and food
control areas targeting to:
- the
evaluation of hte mean size of
fine naoparticles
- the evaluation
of the concentration of the paramagnetic ions
- the
quantitative determination of the concentration of the pollution
factors as carbonic particles, heavy metal ions and so on
- the
determination of the free radical concentration in the irradiated foods
in order to prolonge their validity period.
Economical/social
impact for the regional
socio-economical development.
The north-western
development region is one of the relatively
developed zone from
consists of the
utilization of
the new technologies based on knowledge. It is characterized by a
high-qualified manpower, the developed academic medium, the high
potential for
the research and qualified high schools. The statistics show that the
number of
researchers as compared with the total population is smaller than the
corresponding one in the European countries and also in other regions
of our
country. Based on these facts, we
consider that the proposed project frames in the priority referring to
the enhancement of CDI potential of the northwestern
region. Therefore,
the investments in the modernization of the infrastructure in the CDI
system
represents a priority for this region since it could contribute
to the
stabilization of the highly qualified man power and to the stimulation
of the
creation of new industrial entities.