Nanoscience and Nanotechnology

Nanoscience and Nanotechnology is an international and multidisciplinary peer-reviewed journal covering fundamental and applied research in all disciplines of science, engineering and medicine.

Khalid Omar

Editorial Board Member of Nanoscience and Nanotechnology

Assistant Professor, School Of Physics, Universiti Sains Malaysia, Malaysia

Research Areas

Nanostructured Materials, Laser Technology, Laser in Medical, Biophysics Radiation, Pourus Solar Cell

Education

2004-2005Post-DoctorateLaser-Induce Etching, Jamia Millia Islamia, New Delhi, India (Central University)
2000-2003Ph.DLaser Technology/ Nanostructure, Jamia Millia Islamia, New Delhi, India (Central University)
1984-1986M.ScApplied Physics, University of Technology, School of Applied Sciences. Baghdad, Iraq
1972-1977B.Sc Physics, Al-Mustansiryah University, Faculty of Sciences, Department of Physics-Baghdad, Iraq

Experience

2005-present Senior Lecturer (Associate Prof. post under processing), School of Physics, Universiti Sains Malaysia
1987-2000 Specialized Physicist/Scientific Researcher, Lecturer, Laser Research Centre, part-time Lecturer at Baghdad University/Laser Institute for Postgraduate Studies, and University of Technology, School of Applied Sciences, Baghdad, Iraq
1986-1987 Lecturer, University of Technology, School of Applied Sciences, Baghdad, Iraq
1980-1984 Technical Supervisor/Lecturer, North Petroleum Company, Kirkuk, Iraq
1977-1980Journalist, Al-Jumhoryaih newspaper, Baghdad, Iraq

Academic Achievement

Thanks from Universiti Sains Malaysia, letter no. TNC (P&I) 58/01/iiJld.5 dated 5th June 2007 for fabrication a new flow sensor for Ar-Ion Laser, 05/06/2007
Sanjungan prize (Writer of 1 Journal), (2009), Universiti Sains Malaysia, Malaysia
Sanjungan prizes (Co-Writer of 2 Journals), (2010), Universiti Sains Malaysia, Malaysia
A biographee in the 2010 Edition of Marquis Who's Who in the world, 2010
Top 100 Scientists, The International Biographical Centre, Cambridge, England, April 2010
Selected within 2000 Outstanding Intellectuals of The 21st Century, 2011, The International Biographical Centre, Cambridge, England, Nov. 2010
A biographee in the 2011 Edition of Marquis Who's Who in the world, 2011
Sanjungan prizes (Co-Writer of 2 Journals), (2011), Universiti Sains Malaysia, Malaysia

Membership

Iraqi Physics and Mathematics Association, from 1977
Semiconductor International, accounts No. 04607487, from 2002
American Association for the Advancement of Science (AAAS), from 2003
Malaysian Academic Association, from 2006
Association of Iraqi Community, Malaysia, from 2008
TWAS Associateship. The Academy of Sciences for the Developing World (TWAS), c/o ICTP-Strada Costiera 11-34151 Trieste-ITALY, March 2011

Publications: Journals

[1]  Khalid M. Omar, N. K. Ali, Z. Hassan, M. R. Hashim and H. Abu Hassan,"Spectroscopic investigation of porous Silicon prepared by Laser-Induced Etching". Journal of Optoelectronic and Advanced Materials (JOAM), Vol.10, No.10, pp. 2653-2656, Oct. 2008.
[2]  K. M. Omar, N. K. Ali, Z. Hassan, M. R. Hashim, H. Abu Hassan, "The Methodology Effects on Surface Morphology Pattern of Porous Semiconductors". Current Issues of Physics in Malaysia, Vol. 1017, pp.129-133, (2008). ISBN 978-0-7354-0538-7.
[3]  Yam, F. K., Hassan, Z., Omar, K. M.,"Nanoporous GaN film generated by electro chemical etching". Sains Malaysiana, 37 (3): 285-288, Sep. 2008.
[4]  Khalid M. Omar, N. K. Ali, Z. Hassan and Md R. Hashim, "The methodology effects on surface morphology pattern of porous semiconductors". American Institute of Physics AIP, Vol. 1017, pp. 129, May 20, 2008, Materials Physics and Application.
[5]  F. Z. Jasim, K. Omar, and Z. Hassan, "The Size Effect in Small Aperture Confined Vertical Cavity Surface Emitting Laser". American Institute of Physics AIP, Vol. 1136, pp. 103-107, June 1, 2009, Nanoscience and Nanotechnology.
[6]  F. Z. Jasim, K. Omar, and Z. Hassan, "The Studies of Doping Concentration Effects on VCSEL Laser". American Institute of Physics AIP, Vol. 1136, pp. 243-247, June 1, 2009, Nanoscience and Nanotechnology.
[7]  N. Hussain, K. O. Al-Hadithi and M. S. Jaafar, "The Structure of Intact Side Tissue Loss Based on FTIR Spectroscopic Measurements". American Institute of Physics AIP, Vol. 1172, pp. 111-113, Nov. 11, 2009.
[8]  Farah Z. Jasim, Khalid Omar and Z. Hassan, "The effect of doping concentration on VCSEL performance". Journal of Optoelectronic and Advanced Materials-Rapid Communications (OAM-RC), Vol. 3, No.1, pp. 10-12, Jan. 2009.
[9]  Khalid Omar, Z. Hassan, Asmiet Ramzy and H. Abu Hassan, "Laser Effects on Porous Silicon Synthesis by Photoelectrochemical Etching Process". Journal of Optoelectronic and Advanced Materials (JOAM), Vol 11, No. 11, p. 1641- 1646, Nov. 2009.
[10]  Farah Z. Jasim, Khalid Omar, Z. Hassan, "Temperature Effect on VCSEL Output Performance". Journal of Optoelectronic and Advanced Materials-Rapid Communications (OAM-RC), Vol. 3, No. 11, p.1136- 1138, Nov. 2009.
[11]  Farah Z. Jasim, Khalid Omar, Z. Hassan, "Multiple Quantum Well of GaAs VCSEL structure". Journal of Optoelectronic and Advanced Materials (JOAM). Vol. 11, No. 11, p. 1723- 1727, Nov. 2009.
[12]  Farah Z. Jasim, Khalid Omar, Z. Hassan, "Small Aperture Confined Vertical Cavity Surface Emitting Laser Effects on Output Performance". Journal of Optoelectronic and Advanced Materials-Rapid Communications (OAM-RC), Vol. 3, No. 11, p. 1247- 1249, Nov. 2009.
[13]  A. Ramzy, K. Omar, Z. Hassan, H. Abu Hassan, "Laser Effects on Porous Silicon Synthesis by Photoelectrochemical Etching Process". Optoelectronics and Advanced Materials-Rapid Communications (JOAM-RC), Vol. 3, No.11, p. 1190-1194, 2009.
[14]  Wisam J Aziz, Asmat Ramizy, K. Ibrahim, Khalid Omar, Z. Hassan, " The Performance of silicon solar cell with different texturing processes". Journal of Optoelectronic and Advanced Materials (JOAM), Vol. 11, No. 11, p. 1632-1636, Nov. 2009.
[15]  W. J. Aziz, A. Ramizy, K. Ibrahim, K. Omar, Z. Hassan "Effect the orientation of porous silicon on solar cells performance". Journal of Optoelectronic and Advanced Materials-Rapid Communications (JOAM-RC), Vol. 3, No. 12, p. 1368- 1370, Nov. 2009.
[16]  Asmiet Ramizy, Khalid Omar and Z. Hassan, "High Photoluminescence of Silicon Nanostructures Synthesized by Laser-Induced Etching". Microelectronics International, Vol. 27, No. 1, pp. 45-48, 2010.
[17]  Asmiet Ramizy, Wisam J Aziz, Z. Hassan, Khalid Omar and K. Ibrahim, "The effect of porosity on the properties of silicon solar cell ". Microelectronics International, Vol. 27, No. 2, pp. 117-120, 2010.
[18]  Khaled A. Al-Khaza'leh, Khalid Omar, Abbas F. M. Alkarkhi, M. S. Jaafar, "Optimization of viability using Response Surface Methodology of the effect of time and concentration on Sn(IV) chlorin e6 dichloride trisodium photosensitizer". Journal of Optoelectronic and Biomedical Materials. Vol. 2, No. 4, pp. 273-280, Oct-Dec. 2010.
[19]  Farah Z. Jasim, Khalid Omar and Z. Hassan, "New design of GaAs Multiple Quantum Well VCSEL structure". Accepted, Journal of Materials Science-Poland.
[20]  F. Z. Jasim, K. Omar and Z. Hassan, "The Effect of Number of Distributed Bragg reflectors on VCSEL Output Performance". Journal of Optoelectronic and Advanced Materials-Rapid Communications (JOAM-RC), Vol. 4, No. 6, p. 774- 777, 2010.
[21]  Wisam J. Aziz, Asmiet Ramizy, K. Ibrahim, Z. Hassan, Khalid Omar, "The effect of anti-reflection coating of porous silicon on solar cells efficiency". OPTIK, Int. J. Light Electron Opt., Vol. 122, No. 16 (2011), pp. 1462-1465.
[22]  Asmiet Ramizy, Z. Hassan and Khalid Omar, "Porous Silicon Nanowires fabricated by Electrochemical and Laser-Induced Etching". Journal of Materials Science: Materials in Electronics, Vol. 22, (2011) pp. 717-723.
[23]  Asmiet Ramizy, Z. Hassan and Khalid Omar, "Nanostructured GaN on Silicon Fabricated by Electrochemical and Laser-induced Etching". Materials Letters, 65 (2011) 61-63.
[24]  Khaled A. Al-Khaza'leh, Khalid Omar, M. S. Jaafar," pH effect on cellular uptake of Sn(IV) chlorin e6 dichloride trisodium salt by cancer cells". Journal of Biological Physics, Vol. 37, No. 1 (2011), pp. 153-161.
[25]  Asmiet Ramizy, Wisam J. Aziz, Z. Hassan, Khalid Omar and K. Ibrahim, "Improved Performance of Solar Cell based on Porous Silicon Surfaces". In Press, Corrected Proof, Available online 9 March 2011, OPTIK.
[26]  Asmiet Ramizy, Z. Hassan and Khalid Omar, "Laser-Induced Etching Parameters Impact on Optical Properties of the Silicon Nanostructures". Science China–Technology Sciences, Vol. 54, No. 1 (2011), pp. 58-62. January 2011.
[27]  Asmiet Ramizy, Wisam J. Aziz, Z. Hassan, Khalid Omar, and K. Ibrahim, "Solar Cells Performance Affected by Doping type of Porous Silicon". Accepted, Materials Science-Poland.
[28]  Asmiet Ramizy, Z Hassan, Khalid Omar, "Porous GaN on Si (111) and its application to gas sensor". Sensors & Actuators B: Chemical, Vol. 155, No. 2 (2011), pp. 699-708.
[29]  Asmiet Ramizy, Z. Hassan, Khalid Omar, Y. Al-Douri, M. A. Mahdi, "New optical features to enhance solar cell performance based on porous silicon surfaces". Applied Surface Science, Vol. 257, No. 14, (2011), pp. 6112–6117.
[30]  Khalid Omar, "Gamma-Ray radiation attenuated by barium sulfate–cement barrier". Elixir Bio. Phys. Vol. 34 (2011), pp. 2502-2504.
[31]  Khalid Omar, Y. Al-Douri, Asmiet Ramizy, Z. Hassan, "Stiffness properties of porous Silicon nanowires fabricated by electrochemical and laser-induced etching". Journal of Superlattices and Microstructures, Vol. 50, No. 2 (2011), pp. 119-127.
[32]  Khaled A. Al-Khaza'leh, Khalid Omar, M. S. Jaafar, Guat-Siew Chew, " Effect of Acidification on the Absorption and Fluorescence Properties of Sn(IV) Chlorin e6 Dichloride Trisodium Salt", Arabian Journal For Science and Engineering, Vol. 36 (2011) pp.579-606, Springer.
[33]  M. Zaien, K. Omar, and Z. Hassan," Growth of nanostructured CdO by solid-vapor deposition". In press, International Journal of the Physical Sciences. June 2011.
[34]  Khaled A. Al-Khaza'leh, Khalid Omar, M. S. Jaafar, " Photobleaching of Sn(Iv) Chlorin e6 Dichloride Trisodium Salt in Different Environments". In press, African Journal of Biotechnology. June 2011.
[35]  Khalid Omar, "Detection of the vapor benzene composition formed inside the car cabin". Elixir Chem. Phys. Vol. 36 (2011), pp. 3501-3503.
[36]  Naser M. Ahmed, Asmiet Ramizy, Z. Hassan, Ali Amer, Khalid Omar, Yarub Al-Douri, "Nano and micro porous GaN characterization using image processing method". Accepted, OPTIK, 13/06/2011.
[37]  A. M. Musa and N. A. Ammar, K. M. Ommer, "Rectifying contact studies of semiconductors by means of laser-Induced diffusion". J. Engineering and Technology (Iraq), Vol. 5, No. 3, p.82-111, 1988.
[38]  Khalid M. Omar, Zahid H. Khan, R. K. Soni and S. C. Abbi,"Temperature Dependence of Raman Spectra of Porous GaP". Journal of Physical Science, Vol. 18(2), 49-57, 2007.
[39]  Khalid M. Omar, "Morphology studies of porous GaP, synthesis by laser-induce etching". Journal of Physical Science, Vol. 18(1), 103-116, 2007.
[40]  Khalid M. Omar, Zahid H. Khan, R. K. Soni and S. C. Abbi, "The effect of etchant concentration on surface morphology, of porous GaP produced by laser-induced etching". Modern Applied Science (MAS), Vol. 2, No. 2, pp.41-50, March 2008.
[41]  Abbas F.M. Alkarkhi, Anees Ahmad, Norli Ismail, Azhar mat Easa and Khalid Omar, "Assessment of Surface Water Through Multivariate Analysis". Journal of Sustainable Development, Vol. 1, No. 3, pp. 27-33, Nov. 2008.
[42]  Khalid Omar, Khaled A. Al-Khaza'leh, M. S. Jaafar, Y. Jidin, and N. N. Bidi, "Laser Effects on Skin Melanin". Modern Applied Science (MAS), Vol. 3, No. 1, pp. 57-61, Jan. 2009.
[43]  Khalid Omar, M. D. Johan Ooi and M. Hussin, "Investigation on Dielectric constant of Zinc Oxide". Modern Applied Science (MAS), Vol. 3, No. 2, pp.110-115, Feb. 2009.
[44]  Khalid Omar, Z. Hassan, K. Goh and H. Teh and H. Abu Hassan, "Synthesis porous GaN by using UV-assisted electrochemical Etching and its optical studies". Modern Applied Science (MAS), Vol. 3, No. 3, pp. 132-139, March 2009.
[45]  Khaled A Al-Khaza'leh, Khalid Omar, M. S. Jaafar, "The Effect of Sn(IV) Chlorin e6 on HepG2 Cancer cell Lines". Journal Advances in Natural Science, Vol. 2, No. 2, pp. 47-52, 2009.
[46]  Asmiet Ramizy, Wisam J. Aziz, Z. Hassan , and K. Ibrahim, and Khalid Omar, "The Effect of Different Anti-Reflection Coating Process on Silicon Solar Cells Performance". World Academy of Science, Engineering and Technology, Vol. 62, pp. 1554-1561, 2010.
[47]  Farah Z. Jasim, Khalid Omar, Z. Hassan, "The Effect of Reflectivity on VCSEL Output Performance". International Journal of Nanoelectronics and Materials (IJNeaM). Vol. 4, No. 1, pp. 65-72, 2011.

Publications: Conferences/Workshops/Symposiums

[1]  K. M. Omar, R. K. Soni, B. G. Rasheed, S. C. Abbi and Z. H. Khan, "Synthesis and optical properties of porous GaP". Proc. International Conference on Physics of Semiconductor Devices, Vol.1 (Dec.11-15, 2001), pp. 248. New Delhi, India.
[2]  K. M. Omar, R. K. Soni, S. C. Abbi and Z. H. Khan, "Laser-induced etching in GaP". Proc. Power Beams & Materials Processing, PBAMP-2002, pp.749-755, Mumbai, India. 2002.
[3]  R. K. Soni, K. M. Omar, S. K. Mohanta, S. C. Abbi and Z. H. Khan, "Laser Controlled Micro and Nano Structures on Semiconductor Surfaces ". Proc. of International Conference on Laser Applications and Optical Metrology, (ICLAOM-03), Dec.2003, p.360, Indian Institute of Technology-Delhi, India.
[4]  S. K. Mohanta, K. M. Omar, R. K. Soni, S. C. Abbi and Z. H. Khan, "Photoluminescence from laser etched self-organized nanostructures in porous GaP". Proc. of the Twelfth International Workshop on the Physics of Semiconductor Devices, vol. II, pp. 1056, 2003, IWPSD-2003 (Nanostructure), Dec. 15-20, 2003, Chennai, India.
[5]  C. J. Wong, H. S. Lim, M. Z. MatJafri, K. Abdullah, Khalid. M. Omar Al-Hadithi and N. M. Saleh, 2006, "PM10 concentration measurement from Internet Protocol camera", Proceeding of the Map India 2006 (Proceeding in CD), 30 January- 1 February 2006, New Delhi, India.
[6]  H. S. Lim, M. Z. MatJafri, K. Abdullah, C. J. Wong, N. M. Saleh and Khalid. M. Omar Al-Hadithi, 2006, High spatial resolution land cover mapping using remotely sensed image, Proceeding of the Map India 2006 (Proceeding in CD), 30 January- 1 February 2006, New Delhi, India.
[7]  H. S. Lim, M. Z. MatJafri, K. Abdullah, N. M. Saleh, C. J. Wong, Khalid. M. Omar Al-Hadithi and Sultan AlSultan, 2006, Land cover classification over Makkah, Saudi Arabia, Proceeding of the Map India 2006 (Proceeding in CD), 30 January- 1 February 2006, New Delhi, India.
[8]  Sultan AlSultan, H. S. Lim, M. Z. MatJafri, K. Abdullah, N. M. Saleh, Khalid. M. Omar Al-Hadithi and C. J. Wong, 2006, A new Algorithm for land Surface temperature Measurements, Proceeding of the Map India 2006 (Proceeding in CD), 30 January- 1 February 2006, New Delhi, India.
[9]  F. K. Yam, Z. Hassan and K. M. Omar, "Dark Current Reduction in MSM Photodetector based on nanoporous GaN". ISESCO International Workshop and Conference on Nanotechnology (IWCN2007), 12th-15th June 2007. P21, pp.51.
[10]  F. K. Yam, Z. Hassan and K. M. Omar, "Studies of Nanoporous GaN Film Generated by Elecrtoless Chemical Etching". ISESCO International Workshop and Conference on Nanotechnology (IWCN2007), 12th-15th June 2007. P8, pp 38.
[11]  Khalid M. Omar, N. K. Ali, Z. Hassan, M. R. Hashim and H. Abu Hassan, "Laser Processing and Spectroscopic Characterization of Porous Silicon". IEEE International Nanoelectronics Conference (INEG) 2008, Shanghai, Nanophotonics & Electronics Forum, 24-27 March, 2008, Shanghai, China.
[12]  Farah Z. Jasim, Khalid Omar, Z. Hassan, "The studies of Doping Concentrations effects on VCSEL Laser". The NANO-SciTech 2008 organized by Universiti Teknologi MARA (UiTM) and Nagoya Institute of Technology (NIT), Japan. The International conference on Nanoscience and Nanotechnology, S & T Twin Tower, Shah Alam , 18th- 21st Nov. 2008.
[13]  Farah Z. Jasim, Khalid Omar and Z. Hassan, "The Size Effect in Small Aperture Confined Vertical Cavity Surface Emitting Laser". The NANO-SciTech 2008 organized by Universiti Teknologi MARA (UiTM) and Nagoya Institute of Technology (NIT), Japan. The International conference on Nanoscience and Nanotechnology, S & T Twin Tower, Shah Alam, Malaysia, 18th- 21st Nov. 2008.
[14]  Farah Z. Jasim, Khalid Omar and Z. Hassan, "Study of Radius Size Effects on Vertical Cavity Surface Emitting Laser Performance". 4th International Conference on Recent Advances in Materials, Minerals and Environment and 2nd Asian Symposium on Materials and Processing (RAMM & ASMP 2009), June 1st-3rd 2009, Penang, Malaysia, p.218.
[15]  Farah Z. Jasim, Khalid Omar, Z. Hassan, "Thermal effects on Performance of Vertical Cavity Surface Emitting Lasers. International Conference on Nanotechnology-Research and Commercialisation (ICONT2009)"International Conference on Nanotechnology-Research and Commercialization, 14th-17th December 2009. Bayview Hotel, Langkawi Island, Malaysia. PG4-S1-13-X, pp.68.
[16]  Asmiet Ramizy, Khalid Omar, Z. Hassan, "Surface Morphology of Porous Silicon Prepared by Laser-Induced Etching". 11th International Conference on Electronic Materials and Packaging (EMAP 2009), School of Mechanical Engineering, USM. December 1st-3rd, 2009. The Gurney Hotel and Residences, Penang, Malaysia. pp. 83.
[17]  N. Hussain, K. O. Al-Hadithi and M. S. Jaafar, "The Structure of Intact Side Tissue Loss Based on FTIR Spectroscopic Measurements". CP1172, the International Conference on Laser Applications-ICLA 2009, Cairo, Egypt.
[18]  Asmiet Ramizy, Wisam J. Aziz, Khalid Omar, Z. Hassan, and K. Ibrahim, "Effect of Electrochemical Anodization Parameters affected on the Properties of the Silicon Nanostructures. International Conference on Nanotechnology-Research and Commercialisation (ICONT2009)"International Conference on Nanotechnology-Research and Commercialization, 14th-17th December 2009. Bayview Hotel, Langkawi Island, Malaysia. P6C-S2-6, pp.100.
[19]  Wisam J. Aziz, Asmiet Ramizy, K. Ibrahim, Khalid Omar, and Z. Hassan, "Effect the Orientation of Porous Silicon on Solar Cells Efficiency. International Conference on Nanotechnology-Research and Commercialisation (ICONT2009)"International Conference on Nanotechnology-Research and Commercialization, 14th-17th December 2009. Bayview Hotel, Langkawi Island, Malaysia. PG2-S3-23, 25.
[20]  Khalid Omar, Asmiet Ramizy, Wisam J. Aziz, Z. Hassan , and K. Ibrahim," The Doping Effect of Porous Silicon on Solar Cells Performance". The 2nd ISESCO, International Workshop and Conference on Nanotechnology (IWCN2010). (25th-27th Jan, 2010). BO13, p. 59. Kuala Lumpur, Malaysia.
[21]  Asmiet Ramizy, Wisam J. Aziz, Z. Hassan, and K. Ibrahim, and Khalid Omar, "The Effect of Different Anti-Reflection Coating Process on Silicon Solar Cells Performance". World Academy of Science, Engineering and Technology, Vol. 62, pp. 1554-1561, Feb. 2010, Penang, Malaysia.
[22]  Asmiet Ramizy, Z. Hassan, Khalid Omar, "Enhancement in Efficiency of Silicon Solar Cell Based on Porous Surfaces". The 8th International Symposium on Semiconductor Light Emitting Devices, ISSLED2010, p.26, May 16th-21th, 2010, the Lake View Hotel, Peking University, Beijing, China.
[23]  Asmiet Ramizy, Z. Hassan, Khalid Omar, "Laser-induced etching parameters impact on optical properties of the silicon nanostructures". The 8th International Symposium on Semiconductor Light Emitting Devices, ISSLED2010, p.26, May 16th-21th, 2010, the Lake View Hotel, Peking University, Beijing, China.
[24]  Khaldun A. Salman, Khalid Omar, Z. Hassan, A.J. Ghazai and A. J. Hashim, " Effect of etching time on porous silicon processing". International Conference on Nanotechnology for sustainability and growth (ICONT2011), Grand Borneo Hotel, Sabah, Malaysia, June 06-09 2011.
[25]  A. J. Hashim, Khalid Omar, M. S. Jaafar, A.J. Ghazai and Khaldun A. Salman, "Structural and optical properties of ZnO film prepared using RF-Sputtering Technique". International Conference on Nanotechnology for sustainability and growth (ICONT2011), Grand Borneo Hotel, Sabah, Malaysia, June 06-09 2011.
[26]  Azrul Nizam Alis, M. S. Jaafar and Khalid M. Omar, "Studies on flux variations between human urine and aging using He-Ne laser". 5 th National Seminar on Medical Physics, Grand seasons Hotel, Kuala Lumpur, 14-15 December 2006. ISBN 983-43150-4-X, pp. 61-67.
[27]  Nor Fadhlin Jaafar, M.S. Jaafar and Khalid M. Omar, "CO2 Laser-Shorea Collina SPP. Wood Interaction and its Characterization". 5th National Seminar on Medical Physics, Grand seasons Hotel, Kuala Lumpur, 14-15 December 2006. ISBN 983-43150-4-X, pp. 47-52.
[28]  D. A. Fattah, M.S. Jaafar, Khalid M. Omar, A. N. Alias, Hussein. S, Ramzun M. R., Rafidah Z., "Identification of Urine Glucose Flux Pattern Using He-Ne Laser and Encircled Flux Analysis System". National Physics Conference, 26-28 December 2007, PERFIK2007, Terengganu Heritage Bay Club, Pulau Duyung,21030, Kuala Terengganu, Terengganu, Malaysia.
[29]  Khalid M. Omar, N. K. Ali, Z. Hassan, and Md. R. Hashim," The Methodology Effects on Surface Morphology Pattern of Porous Semiconductors". National Physics Conference, 26-28 December 2007, PERFIK2007, Terengganu Heritage Bay Club, Pulau Duyung,23100, Kuala Terengganu, Terengganu, Malaysia.
[30]  Farah Z. Jasim, Khalid Omar, Z. Hassan, "Aperture Oxide Confinement Effects in Vertical Cavity Surface Emitting Laser". Presented at PERFIK2009 Conference, Malacca, Malaysia 7th-9th December 2009, OPL-4, pp.27.

Publications: Books/Book Chapters

[1]  Asmiet Ramizy, Y. Al-Douri, Khalid Omar, Z. Hassan, "New Optical Insights to Enhance Solar Cell Performance Based on Porous Silicon Surfaces. InTech book project under the working title "Solar Cells", ISBN: 978-953-307-316-3. InTech Open Access Publisher, June 2011.
[2]  Khalid Omar, Zahid H. Khan, R. K. Soni, "Laser-Induced Etching and Characterization semiconductor nanomaterials". ISBN: 978-3-8443-0509-8, Lambert Academic Publishing (LAP), Germany, May 2011.