Raouf  A.H. El-Mallawany Author of Evaluating Organization Development
FEATURED AUTHOR

Raouf A.H. El-Mallawany

Prof.
Menofia University

Emeritus Prof. of Solid State Physics Phys. Dept., Faculty of Sci., Menofia University,Egypt E-mail: [email protected] Tel: 002-01221956595................................................... Scopus I.D.7003506640: 70 Articles, Citations =1203, h-index =23....... Google Scholar Citation =1865, h-index =27, i10-index = 47....... www.researchgate.net/profile/Raouf_Elmallawany/Total Impa

Biography

R.El-Mallawany served as a research group leader for semiconducting tellurite glasses at Menofia Univ., Egypt.  He published more than 90 international articles, taught physics for undergraduates & postgraduates for nearly 4 decades and supervised and examined 25 Ph.D. & M.Sc. thesis at 9 Egyptian & Arab Universities:
1-Menofia, 2- Alexandria, 3-AlAzhar,
4-Zagazig,     5-Ain Shams, 6-Algeria,
7-Sudan Tech.   8-Qatar Univ.,     9- Northern Borders Univ.    


         Also, cooperated with 15 American, European and Asian Universities in the experimental & theoretical contribution in optical, electrical, thermal, elastic and vibrational aspects in condensed matter physics “Semiconducting Glasses”.

1-Brunel Univ.,UK,
2-Bath Univ.,  UK,
3-Univ. of California, UCAL, USA,                            
4-Inter. Center for Theortical Physics, Italy,
5-Renn Univ.Fr.,                      
7-Otto Schott Institute, DDR,      
8-Lehigh Univ. USA,
9-Instit. for Laser, Buffalo Univ. USA,
10-Mater. Res. Instit, Penn State Univ.USA,
11-Fedral Portogal Univ.,Potogal,    
12-Centre Européen de la Céramique, France,
13-Fock Institute of Physics, Saint-Petersburg State University, Russia.
14- Gandhigram Rural Institute- Deemed Univ., India,
15- Putra Univ., Malaysia.
www.ehis.navy.mil/eurogram/julaug98/Woscal.htm
MWN Doha   www.materialsworld.net/mwn/d_organizers.htm - 13k -
http://www.materialsworld.net/mwn/d_report.htm.

Areas of Research / Professional Expertise

    1-Researcher, Lecturer, Supervisor, Reviewer, Organizer and Advisor for Nearly 4 Decades in Educational Carrier..............
    .........
    2-Experimental & theoretical contribution in optical, electrical, thermal, elastic and vibrational aspects in condensed matter physics and in Cooperation with Arab, European, American and Asian Universities.................................

    3-Gathering and correlating all physical properties for the 1.st time of this unique solid material and suggesting new directions for research in a Handbook......................................

    4-Invitation form the International Materials Institute IMI, USA to Put the Handbook in 5 Video international educational seminars to help researchers all over the world. www.lehigh.edu/imi/resources.htm....................................

    5-Professional Academic Administrative & Skills in Higher Education Projects, International Cooperation& leadership Potentials and knowledge of International University Styles and awarded 3 national awards...............................

          

      Prior to article 1 by ElMallawany (1984) Cited > 120 times, tellurite glasses was considered as intermediate glass former and no international attention on it and after 25 Years by modifying it with transition metal or rare earth ions it got unique properties (Article 2012). Telluride glasses have very high potential applications in area of optoelectronics such as laser technology and fiber optics. The interference and independent of the physical processes occurring simultaneously are the key problems in the field of material science and after solving the theoretical difficulties with amorphous solids ( Article 1992) Cited > 50 times, telluride glasses got a high international research attention and relative new commerce together with information technology and fiber amplifier . The considerable theoretical difficulties experienced for amorphous solids are amplified by the lack of precise experimental information. To fill this gap, the present work is carried out. The mutual benefits of the proposed cooperative research effort are seen as providing the fundamental base for finding new optical glasses with new applications especially  which are of interest of all countries all over the world.

Personal Interests




    Author  and  Reviewer  in  International  Journals :
    cap: Current Applied Physics
    elspec: Journal of Electron Spectroscopy and Related Phenomena
    jalcom: Journal of Alloys and Compounds
    jecs: Journal of the European Ceramic Society
    lumin: Journal of Luminescence
    matchemphys: Materials Chemistry and Physics
    meas: Measurement
    mlblue: Materials Letters
    molstruc: Journal of Molecular Structure
    mr: Microelectronics Reliability
    noc: Journal of Non-Crystalline Solids
    optics: Optics Communications
    physb: Physica B
    pnsmi:  Progress in Natural Science: Materials International
    rinp: Results in Physics
    rpc: Radiation Physics and Chemistry
    saa: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
    ssc: Solid State Communications
    ssscie: Solid State Sciences
    ultras: Ultrasonics
    Journal Optical Engineering and Applications JOEA

Books

Featured Title
 Featured Title - Tellurite Glasses Hdbk Physical Properties & Data 2ed - 1st Edition book cover

Articles

Ceramics International,Available online 9 July 2014

Optical Properties of quaternary TeO2-ZnO-Nb2O5-Gd2O3 glasses


Published: Jul 15, 2014 by Ceramics International,Available online 9 July 2014
Authors: N. Elkhoshkhany, Rafik Abbas. R. El-Mallawany, A.J. Fraih
Subjects: Materials Science

Measurements of UV spectra in the wavelength range of 380–500 nm. •Identification of density, oxygen packing density and molar volume vs. Gd2O3 mol%. •Calculation of optical parameters; Eopt , ΔE, n,αo2−(Eg)αo2−(Eg), Λ(Eg). •FTIR spectra in the range of wave numbers 350–4000 nm recorded and designated.

Measurement, Volume 47, January 2014, Pages 22-25

Estimation of uncertainty for sulfonated grafted low density polyethylene dosime


Published: Jul 15, 2014 by Measurement, Volume 47, January 2014, Pages 22-25
Authors: H.M. Diab, R. El-Mallawany
Subjects: Materials Science

Highlights •The TL response of the new set of grafted polymer samples satisfies many requirements for dosimetry. •Sources of uncertainty; detector errors, reader errors, thermal treatments, over response. •For the used procedure, uncertainties multiply coverage factor to obtain the expanded uncertainty.

Ceramics International 40 (5), 7389-7394  (2014).

Simulation ofacousticpropertiesofsometelluriteglasses


Published: Jan 01, 2014 by Ceramics International 40 (5), 7389-7394 (2014).
Authors: R El-Mallawany, MS Gaafar, MAM Abdeen, SY Marzouk
Subjects: Materials Science

The Artificial Neural Network (ANN) technique is introduced in the current study to simulate and predict density,longitudinal and shear ultrasonic velocities and elastic moduli for sometellurite glasses.

Ceramics International, Volume 40, Issue 8, Part A, September 2014, Pages 11985-11994

Thermal properties of quaternary TeO2–ZnO–Nb2O5–Gd2O3 glasses


Published: Jan 01, 2014 by Ceramics International, Volume 40, Issue 8, Part A, September 2014, Pages 11985-11994
Authors: N. Elkhoshkhany, Rafik Abbas, R. El-Mallawany, k.S.H. Humoud Sharba
Subjects: Materials Science

Quaternary tellurite glass systems in the form 75TeO2–15ZnO–(10−x ) Nb2O5–x Gd2O3 (x =0.5, 1.0, 1.5, 2.0 and 2.5 mol%) have been prepared by the melt quenching technique. Density, molar volume and oxygen packing density of every glass composition have been measured and calculated.

Chalcogenide Letters Vol. 11, No. 5, May 2014, p. 227 - 232

PREDICTION OF ULTRASONIC PARAMETERS AT LOW TEMPERATURES


Published: Jan 01, 2014 by Chalcogenide Letters Vol. 11, No. 5, May 2014, p. 227 - 232
Authors: R. EL-MALLAWANY, M. S. GAAFARb, Y. A. AZZAM,
Subjects: Materials Science

The deformation potential in x Nb2O5 - (1-x) TeO2, 0.1 PbO - x Nb2O5 - (0.9-x) TeO2 and 0.2 PbO - x Nb2O5 - (0.8-x) TeO2 tellurite glass systems, was calculated using the Central Force Theory (CFT).

Advances in Condensed Matter Physics,Volume 2014, Article ID 174362, 7 pages

Effect of Concurrent ZnO Addition and AlF3 Reduction on


Published: Jan 01, 2014 by Advances in Condensed Matter Physics,Volume 2014, Article ID 174362, 7 pages
Authors: Haji Abdul Aziz Sidek, Raouf El-Mallawany,Krishnaswamy Hariharan,Shaharuddin Rosmawati
Subjects: Materials Science

The compositional dependence of the ultrasonic velocities and related parameters are discussed to understand the rigidity and compactness of the glass system studied.