ت |
اسم البحث |
اسم الباحث / الباحثين |
اسم المجلة |
المجلد |
العدد |
رقم الصفحة |
Impact factor |
Abstract |
1 |
PHOTONIC CRYSTAL FIBER MAGNETIC FIELD SENSOR BASED ON AMPERE
FORCE |
أ.م.د. اياد زوين محمد
د.بشرى رزوقي مهدي
الطالبة في رضا |
Sci.Int.(Lahore) |
29 |
1 |
99-102 |
|
Magnetic field PCF modal interferometer sensor
based on Ampere force is proposed . We fabricated this
sensor by splicing section of PCF between two SMFs to
achieved Mach-Zehnder interferometer. Ampere force is
generated When electrical current flow in AL wire passes
perpendicular magnetic field applied. It leads to vibration
AL wire is installed with PCF. Cladding mode of PCF is
sensitive to external effect. The magnetic field varies in
range from (5.2mT) to (31.7mT). The greatest value of the
sensitivity of this sensor reached equal to (31.2pm/mT). |
2 |
Micro-structure Chemical Fiber Sensor |
أ.م.د. اياد زوين محمد- د.بشرى رزوقي مهدي -الطالبة في رضا |
FONDAZIONE GIORGIO RONCHI |
Vol ANNO LXXII |
2 |
250-256 |
|
Photonic crystal fiber interferometers have
unique properties so that they are widely used for sensing
applications. In this work PCFs solid core (LMA-10) based on
Mach-Zehnder modal interferometer for sensing PH values is
presented. The general structure of the sensor was applied
by fusion splice PCF at 1.4 cm length between two SMF-25, at
the fusion splice region where the air holes were fully
collapsed, so that the core and cladding mode could couple
and recombine, the sensor was immersed in a solution at
different PH values (2, 4, 6, 7, 8, 12, 13) that leads to
different refractive indices (RI) in the range
1.3428-1.3439. The maximum sensitivity achieved from this
design is equal 842 nm/RIU |
3 |
Antimicrobial Activity of TiO2 NPs against Escherichia coli
ATCC 25922 and Staphylococcus aureus ATCC 25923 |
أ.م.د. عبد الهادي كاظم جدران - ازهار محمود حليم |
International Journal of Computation and Applied Sciences
IJOCAAS |
2 |
1 |
10-006 |
|
Titanium dioxide (TiO2) nanoparticles (NPs)
colloidal that have been synthesized via Nd-YAG laser
technique in pure distilled water. The produced NPs were
characterized by UV-Vis absorption spectrophotometer and
Transmission Electron Microscope (TEM). The surface Plasmon
resonance of the colloidal determined by UV-Vis absorption
spectra and the absorption peak located at 200nm. TEM
exhibits that the size of NPs ranged between 10-80 nm. The
antimicrobial activity was tested against Escherichia coli
ATCC (gram negative bacteria) and Staphylococcus aureus ATCC
25923 (gram positive bacteria). Prepared TiO2 NPs exhibited
inhibitory activity in both bacteria strains with best
selectivity against gram-negative bacteria |
4 |
Investigation of the Non-linear Properties of Hybrid
Chlorophyll α doped Tio2 Nano Particles |
أ.م.د.علي هادي عبد المنعم
احسان محسن عباس
سلافة اسماعيل ابراهيم |
International Journal of Computation and Applied Sciences
IJOCAAS, |
2 |
1 |
27-32 |
|
Our work is studying the optical nonlinearity
properties of Chlorophyll-a doped epoxy resin polymer with
TiO2 nanoparticle effect. Using EZ-scan technique with
continuous wave Nd: Chlorophyll YAG laser operating at (532)
nm wavelength as excitation source. The samples exhibit
absorption nonlinearities which due to saturable absorption
(SA) process. The nonlinear refractive index n2 is a
positive sign, indicates self-focusing optical nonlinearity
process. The nonlinear refractive index n2, and the
nonlinear absorption coefficient B are found to be of the
order of 10-11 cm2/W and 10-1 cm/W respectively. The Tio2
nanoparticle concentration enhancing the nonlinear optical
properties of samples |
5 |
Preparation and characterization cadmium nano nickel ferrite
at different sintering temperature by sol gel method |
اقبال سلمان ناجي
فرح
طارق محمد
أ.م.د.عبد الهادي كاظم جدران |
Indian Journal Of Natural Sciences |
7 |
38 |
11604-11614 |
|
Nano-hematite (α-Fe2O3) and nano-cadmium ferrite (CdFe2O4)
are prepared using template-assisted sol-gel method. The
prepared samples are analyzed using X-ray diffraction (XRD),
Fourier transform infrared spectroscopy (FTIR), scanning
electron microscopy (SEM), and Mössbauer spectroscopy
techniques for structural and microstructural studies.
Nano-α-Fe2O3 with particle size ~60 nm is formed at 500°C,
while nano-CdFe2O4 with smaller particle size (~40 nm) is
formed at 600°C. It is found that with a simple sol-gel
process we can prepare nano-CdFe2O4 with better conditions
than other methods: pure phase at lower sintering
temperature and time (economic point) and of course with a
smaller particle size. So, based on the obtained
experimental results, a proposed theoretical model is made
to explain the link between the use of the sol-gel process
and the formation of nano-CdFe2O4 as a pure phase at low
temperature. This model is based on a simple magnetostatic
interaction between the formed nuclei within the solution
leading to the formation of the stable phase at low
temperature. |
6 |
Anti-dermatophyte effect of TiO2 nanoparticles colloidal
prepared by pulsed laser ablation |
ا.م.د عبد الهادي كاظم جدران
ازهار
محمود حليم |
Advances in Environmental Biology |
10 |
12 |
43-54 |
|
Background: Dermatophytes are a pathogens that
can cause fungal infection (Dermatophytosis), and
Trichophyton rubrum (T.rubrum) is one of them. It infects
superficial layer of the human tissues such as skin, hair
and nails. Objective: This work was carried out to study the
antifungal activity of TiO2 nanoparticles (TiO2 NPs) which
have been prepared by green method. It was prepared using
Q-switched pulsed Nd:YAG laser ablation of a pure titanium
plate immersed in double distilled de-ionized water (DDDW).
Fungal cell suspension 1 105 cell/ml was treated with
different concentrations (37, 75 and 150) μg/ml and (100,
200 and 300) μg/ml of prepared and standard TiO2 NPs,
respectively.Result: UV-visible absorption spectrophotometer
exhibited the absorption peak of TiO2 NPs colloidal that
peaked at 290nm and demonstrated that TiO2 NPs production is
more efficient at 700 pulse and 1064 nm. The morphology and
the self-assembly pattern of TiO2 NPs were characterized
using Transmission Electron Microscopy (TEM) and Atomic
Force Microscopy (AFM), TiO2 NPs shape was spherical and the
particle size distribution ranged from 30 to 110 nm at
1064nm and from 10 to 90 nm at 532nm. Particle size analyzer
showed the particle size distribution intensity. Zeta
potential determined the surface charge of the colloidal
which was -14.81mv. The prepared TiO2 NPs exhibited
significant antifungal activity against T. rubrum by
reduction their colony diameters Conclusion: Evident growth
inhibition of T. rubrum colonies diameters was observed at 3
and 6 days incubation times and the growth-inhibitory effect
of TiO2 NPs was more effective at 150 μg/ml concentration
and 3 hrs exposure time |
7 |
Chaotic Spiking and Mixed Mode Oscillations by
Optoelectronic Feedback |
أ.م.د.كاظم عبد حبيتر
كاظم عبد الستار |
Australian Journal of Basic and Applied Sciences |
10 |
16 |
14-21 |
|
We report theoretically and experimentally the
nonlinear dynamic of existence steady state to periodic,
period doubling, Mixed Mode Oscillations and chaotic spiking
in Light Emitting Diode (LED). The chaotic dynamics is
completely determined by the variation of the injecting bias
current. Chaotically spiking attractors in LED with
optoelectronic feedback is observed as a result of canard
phenomena in three-dimensional phase space (incomplete
homoclinic scenarios). injecting current on the transition
among steady state to periodic , period doubling, Mixed Mode
Oscillations, Chaotic, bifurcation, FFT, stair case, and
attractors, have been also investigated. |
8 |
Copper oxide NPS :Synthesis and their Anti- Dermatophyte
activity against Trichophyton Rubrum |
أ.م.د.عبد الهادي كاظم جدران
ازهار محمود حليم |
مجلة الهندسة والتكنولوجيا |
35 |
3 |
276-281 |
|
Trichophyton rubrum (T.rubrum) is a pathogenic
dermatophyte that can causes fungal infection in keratinized
layer of the human tissues such as skin, hair and nails.
This work was carried out to study the antifungal activity
of CuO nanoparticles (CuO NPs) on the viability of T.rubrum.
CuO NPs have been synthesized by pulsed laser ablation of
copper target immersed in liquid media using Q-switched
pulsed Nd:YAG laser with 1064 nm. The optical properties and
the surface charge of CuO NPs colloidal were characterized
using UV–Vis spectrophotometer and Zeta potential
techniques. UV–Vis spectrophotometer exhibited two peaks of
absorption of CuO NPs colloidal: sharp peak at 200 nm and
another peak at 630 nm. Zeta potential technique showed
negative charge of CuO NPs colloidal (-28.16 mV). The
morphological properties of CuO NPs such as particle size,
shape and particle size distribution were characterized
using Transmission Electron Microscopy (TEM) and Atomic
Force Microscopy (AFM), the shapes were spherical and the
particle size distribution was inhomogeneous which ranges
between 20 to 180 nm. The synthesized CuO NPs presented
suitable fungistatic activity against T.rubrum and its
highest growth-inhibitory effectiveness was at high
concentration (100 μg/ml) and high exposure time (3 hrs).
Moreover, the inhibition rate of T. rubrum progressively
increased with increasing CuO NPs concentration and exposure
time. |
9 |
The effect of water content on damage depth in tissue
subjected to Co2 laser and experimental and theoritcal study |
أ.خالد سالم شبيب
- احسان فتح الله رستم
أ.د. محمد عبد الوهاب منشد |
International Journal of Advanced Research |
4 |
10 |
260-269 |
|
In this paper, the effect of subjecting CW CO2 laser on
three types of tissues, having different water content
(muscle, brain and lung) have been studied and the damage
depth in tissue subjected to CO2 laser are found
theoretically and experimentally. This paper, studied the
thermal damage using two methods, thermal Dose (CEM43) and
Arrhenius’ equation. From this work, it is found that: the
damage depth that occurs due to apply CW CO2 laser, is
decreased with the increase of laser power, velocity, and
water content in tissue. Arrhenius model is found to be more
accurate than CEM43 based on the damage assessment. The
results of this research provide useful information to the
surgeon who aimed to decrease damage depth, which decrease
healing time. |
10 |
Optical Safety System |
أ.م.د.اياد زوين محمد |
Engineering &Technology .Journal |
34 |
12 |
2207-2215 |
|
Laser fence is a mechanism used to detect objects that
passes vision line between the laser source and optical
detector. While, Motion detection theory is the operation of
detecting a variation in the location of a body relative to
its environment or a variation in the circumference relative
to a body. Therefore, this work provides an intelligent link
between those two methods using optical communication, by
using a new method for detecting moving objects from static
background based on different window frames, which achieves
the most efficient security system based on high assessment.
This assessment was achieved by using visual basic language
to evaluate the system. The system program is by using c# as
program language to detect a penetration. |
11 |
Thermal Lensing Reduction in Conventional and Composite
Nd:YAG Laser Rod |
أ.م.د.محمد جلال عبد الرزاق
م.د.عبد الله خضير عباس
وائل ياس ناصر |
Engineering &Technology .Journal |
34 |
11 |
2031 -2035 |
|
A finite-element method (FEM)
was used to simulate numerically the effect of thermal
lensing in YAG rods doped with Nd ion using LASCAD software.
The temperature distribution and thermal lensing focal
length of the composite laser rod (YAG/Nd:YAG) with one
undoped end cap was considered and compared with
conventional laser rod (Nd:YAG) by applying software.
Results show that thermal lensing effects were reduced by a
factor of 2 using (YAG/Nd:YAG) composite rod at pump power
of 20W. . |
12 |
Experimental estimation of thermal damage in tissue
subjected to continues wave Co2 laser |
ا.خالد سالم شبيب
- احسان فتح الله رستم
أ.د. محمد عبد الوهاب منشد |
international Journal of Scientific and research
Publications |
6 |
11 |
94-100 |
|
In This work, the water content is determined in muscle,
liver, heart, brain and lung. In addition, this work
estimate the damage depth in different types of tissues
subjected to continuous wave CO2 laser. In this paper, three
types of tissues have been used (muscle, lung and brain)
which are subjected to different power level of CO2 laser
intensity for 20 s. Some conclusions are obtained; as laser
power increased the damage depth decreased; In addition, it
is found that as water content increased the damage depth
decreased, because of the water content of brain tissue is
more than lung and muscle tissue, so that brain has damage
depth less than muscle and lung tissues. The results of this
research are of great interest in the medical field when
using CO2 laser as cutting tool in surgery, which helps
surgeons to know the damage that occurs when tissue is cut
using CO2 laser. |
13 |
Combined effect of turbulence and weather on Radio over Free
Space Optics Ro-FSO |
أ.م.د.صلاح الدين عدنان طه
مازن علي احمد |
Advance in Natural and Applied Sciences |
11 |
9 |
104-109 |
|
Radio over free space optics (Ro-FSO) is a modern
communication techniques that promising a development
future. In this paper, design Ro-FSO for simulation
transmissions 2.5 Gbps and 10 Gbps over maximum distance are
possible of FSO under clear and heavy fog weather condition,
with compression the ability of two radio frequencies for
transporting date rate along farthest link through FSO
channel. The maximum distance of transporting 2.5 Gbps was
11.5 km by radio frequency 20 GHz opposite when
transmissions 10 Gbps maximum link has been operated was
10.9 km by radio frequency 60 GHz under clear weather, the
similar under heavy fog condition except decreased the
distance in FSO from kilometers to a few meters. Finally, by
accreditation of radio frequency bandwidth GHz for carrying
information Gbps placed on optical wave to be transmitted
over optical channel FSO is influenced by many factors of
turbulence and weather attenuation. Combined effect of
turbulence and weather on Radio over Free Space Optics RoFSO |
14 |
Design and Fabrication of Evanescent wave
Fiber Optic Sensor
|
أ.م.د.صلاح الدين عدنان طه
علي مهدي حمادي |
Advance in Natural and Applied Sciences |
11 |
4 |
130-139 |
|
Optical fibers have been widely used in the field of
sensors. In this paper single mode fiber optic sensor is
designed and constructed for detecting the concentration of
solutions based on the excitation of the evanescent wave at
the cladding/core interface. Two wavelengths of 650nm and
850nm have been used. 3 cm of cladding has been removed in
the middle of 1 m SMF-28 by using Hydrofluoric acid (HF).The
sensing region is immersed in various concentrations of
Sodium Chloride (Nacl) and Sucrose solutions. Light Emitting
Diode (LED) is connected to one end of the fiber and the
other end to Optical Spectrum Analyzer and/or power meter.
As the concentration of solution increases the intensity
decreases, the output power decreases, and the absorbance of
evanescent wave increases .The sensitivities of this sensor
for sucrose solutions at 850 nm and 650 nm are 0.18 nW/(%w/v)
and0.1637nW/(%w/v),respectively and for NaCl solutions at
850 nm and 650 are 0.437 nW/(%w/v) and 0.337 nW/(%w/v),respectively |
15 |
Comparison of Discrete Lــband Raman Fiber Amplifier in Two
Different Configurations |
م.د عبد الله خضير عباس
ا.م.دصلاح الدين طه عدنان
م. محمد عبد الستار |
Advance in Natural and Applied Sciences |
11 |
9 |
224-241 |
|
The performance of a discrete L band Raman fiber amplifier (RFA)
is investigated and compared for two different
configurations: single and double pass utilizing
OptiSystem-10. The comparison between these two types of RFA
under same input design parameters is done. By varying Raman
pump power from 50 to 600 mW both amplifiers provide about
12 dB average gain level when the RPP is about 600 mW and
250 mW for SP- and DP-RFA, respectively. This represents
about 41% in pump power conservation so the DP-RFA provided
same gain level to the SP-RFA at approximately half pump
power. According to the results, the Raman pump power (RPP)
of 600 mW and 300 mW is determined as the optimum pump power
(OPP) for the SP-RFA and DPRFA, respectively. The
performance parameters for both amplifiers are evaluated and
compared at OPP. |
16 |
Tipped Fiber Bragg Grating Sensor for concentration
measurements |
أ.م.د.صلاح الدين عدنان طه علي مهدي حمادي |
International Journal of Computation and Applied Sciences
IJOCAAS |
2 |
3 |
123-127 |
|
An optical fiber sensing system
for concentration measurement, based on Tipped Fiber Bragg
Grating is presented. Laser Diode (LD) with wavelength of
1550 nm has been used. The Fiber Bragg Grating is cleaved by
using optical cleaver. The FBG tip is immersed in different
concentrations of Sodium Chloride (Nacl) solutions range
from 5% to 25% and Sucrose solutions range from 10% to 50%.
As the concentration of solution increases the shift in
Bragg wavelength toward red region increases. The
sensitivities of this sensor for different concentrations of
Nacl solutions and Sucrose solutions are 𝟖.𝟑 ×
𝟏𝟎−𝟖µm/(%w/v) and 𝟑.𝟎𝟖𝟓× 𝟏𝟎−𝟔 µm/(% w/v),respectively.. |