Researches published in scientific journal in 2017

No

Paper Name

Researcher name

Journal

Vol

No

Pages

Impact factor

Abstract

1

PHOTONIC CRYSTAL FIBER MAGNETIC FIELD SENSOR BASED ON AMPERE FORCE

Dr. Ayad Zwean Mohammed

Dr. Bushra Ruzoki 

Lena K.Humdi

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

Dr. Ayad Zwean Mohammed

Dr. Bushra Ruzoki 

Fay Fathdel

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

Dr. Abdul hadi Khadim Judran

Azhar Mahmood Haleem

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

Dr. Ali Hadi

Ehsan Mohsen Abas

Sulafa Ismaeel 

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

Ikbal Salman Naji 

Farah Tarek Mohammed

Dr. Abdul Hadi Khadim Judran 

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

 

Dr. Abdul hadi Khadim Judran

Azhar Mahmood Haleem

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

Dr. Kadhim Abed Hubeeter

Kadhim AbdulSattar

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

Dr. Abdul hadi Khadim Judran

Azhar Mahmood Haleem

 

 

Engineering &Technology .Journal

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

Prof. Kahlid Salim Rasheed

Ihsan Fathalaa rustam

Dr. Mohammed Abdul Wahaab Munshed

 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

Dr. Ayad Zwean Mohamed

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

Dr. Mohammed Jalal 

Dr. Abdulla Kudthear

Weal Yas Naser 

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

 

Prof. Kahlid Salim Rasheed

Ihsan Fathalaa rustam

Dr. Mohammed Abdul Wahaab Munshed

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

Dr. Salah Aldeen Adnan

Mazen Ali Mohammed 

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

Dr. Salah Aldeen Taha

Ali Mahdi Hamadi

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

Dr. Abdula Khudaier Abass

Dr. Salah Alden Taha

Mohammed Abdul Sattar 

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

 

Dr. Salah Aldeen Taha 

Ali Mahdi Hamadi

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..

 

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