Since then, I got involved into teaching Computer Science and Engineering in the Institute of Science and Technology. I had a passion to work with deep science and therefore managed to get a PhD in Applied Physics, Electronics and Communication in 2006. Here I worked in a completely different dimension from my earlier work. Here I worked with Simulation of Semiconductors.

Summary of PhD Work

Semiconductor devices have been observed in terms of Electron transport through them using Monte Carlo Simulation. Monte Carlo Method as applied to charge transport in semiconductors, consists of simulation of motion of several electrons inside a crystal. Behaviour of electrons is observed under the action of applied forces due to applied electric fields. A comparative analysis is reported in terms of the relative number of scattering in the ternary systems of semiconductor. The scattering methods are polar optical phonon scattering, ionized impurity scattering non-polar acoustics optical phonon scattering. Emphasis has been given on ternary Al_xGa_1-xAs, Ga_xIn_1-xAs and Al_xIn_1-xAs systems. Influence of scattering mechanisms on electron velocity has been shown. Input parameters were temperature, dimension of the device, donor concentration.

Teaching and Chairing

Later I got fully involved in teaching and got appointed as Head of the Department of Computer Science and Engineering of United International University. I concentrated on Teaching and Learning and taught many different types of courses. I managed to expand the department size from a fledgling status to a very grown stage an served there as Departmental Head for 7 years. Still now I am working as a Professor in this University.

Consultant

I have worked as a Consultant for establishing a Distance Learning Resource Center for Bangladesh University of Health Science.

Development of Health Application

Research Grant received to build the “Mobile-Web based Electronic health records System for patient management in heart diseases” from  innovation fund of 2015-16 ICT Division, Ministry of Posts, Telecommunications and IT, Government of the People's Republic of Bangladesh of around 15500 USD, June 2016. Here, we have developed a mobile application for the use of doctors and nurses. This application simplifies the access of patient state through using of smart phone by doctors. Literally it has solved the challenges of doctors to fetch patient information. As a result prompt medical attention can be given by the doctors to the patients. This, in a way, reduces the hospital stay of the patients and makes the cure faster. Which also allows to deal with more number of patients within a certain period of time.

Development of NanoParticles

As I said earlier, I had a passion to work with semiconductor.  So I managed a research grant received for Preparation and Characterization of Plasmonic Metal Nanoparticles deposited on glass from United International University of around 10,700 USD, March 2016. In this research work, we managed to build a A Facile Arc-Discharge Method to Deposit Metal Nanoparticles on Glass Substrate. In this work, we developed a simple low-cost approach to produce nanoparticles using arc-discharge method. Unlike existing deposition techniques, this is the first instance that nanoparticles are deposited on a charge neutral substrate by arc discharge method. This work has been published in Nanoscience and Naotechnology Letter in 2019.

Being a team member to build Refreshable Digital Braille Display

A Research Grant received to build the “Refreshable Digital Braille Display” from Access to Information programme (A2i) of Prime Ministers Office (PMO) of around 30000 USD, June 2015.

Development of First Bangla Optical Character Recognition System

I got a Research Grant that I received to build the first Bangla Optical Character Recognizer (OCR) from Access to Information programme (A2i) of Prime Ministers Office (PMO) of around 28000 USD, October 2013. We developed the first successful Bangla Optical Charcter Recognizer. This OCR was capable to convert printed Bangla text into editable document in bangla font. The mention is found here https://a2i.gov.bd/service_fund/prototype-development-2/ More than a dozens of publication is available where I worked with Bangla OCR.

Being a Team Member to build the First and Only Bangladesh Research and Education Network

I was involved as a Consultant of International Partner (IP), Kent State University, to support building Bangladesh Research and Education Network BDREN to be operated as a trust initiated under University Grants Commission, supported by World Bank. 2012 – 2016. We already know that BdREN is the only framework providing high speed internet facility and computing facility throughout the country using Fiber network and connecting all the universities of the country for the first time.

Development and Deployment Architect - University Management System

While I was the Deparmtmental Head, I always had the question that why we are failing to develop a comprehensive and successful ERP Software to run University. So I approached our Honorable Vice Chancellor Prof. M Rezwan Khan back in around 2009-2010 and got his patronage to carry out a research on engineering a Comprehensive University Management System. Later we came up with a fantastic prototype that was able to be a very good candidate to work as a comprehensive management software.

Startup Established in 2013

Finally we initiated a startup EDUSOFT CONSULTANTS LTD in 2013 to promote the scaling and commercialization of the University management system ERP known as UCAM. Currently UCAM is being used as the major management system in some of the frontline universities like BUP, MIST, BSMEMU, BSMRAU, IBA-DU, BOU, UIU, UAP, UITS, BUFT, MIU, GUB, BRUR, ISU, GLOBAL UV, etc. It encompasses modules like admission, registration, curriculum, billing, result, HR, payroll, Leave, Accounts, Finance, Hotel and many other modules.

Development and Deployment Architect – School and College Management System

We have also developed a Comprehensive School and College Management System and implemented the system in several organizations. The complete package developed in C# ASP.NET platform. It is a system that manages and keeps track of a student’s academic career starting from admission till ending his academic career. It also integrates accounts management system to keep track of financial issues. At present, 3 schools and colleges are using this product.

Development and Deployment Architect of Accounting Software

My first experience with a software on Integrated Accounts and Inventory – This software works for a steel industry. It was deployed around 1998 in Foxpro 2.5 and still running. Full Account support is given here. Manufacturing Account, Profit and Loss Account and Balance Sheets are prepared. Some inventory management is also included in this system. Now this legacy system is being replaced with a similar modified solution developed in C# ASP.NET.

Development of First Commercial Version of OBE Software

Currently we have come up with the first Outcome Based Education Software in Bangladesh. This is another milestone of myself in developing a software which will help Bangladeshi universities and the Engineering departments to start the practicing of Outcome Based Education in a quicker way. 2 universities are now using this software.

Developing a new model for Software Engineering

We have proposed a new Engineering Model called 3D model for Software Engineering, where the Ds stand for Design, Develop and Deploy. Design indicates the design of the product making as well as the process design. Develop and Deploy is also hinting to the product and process. The process improvement is managed through observation and management, which are fed back into the system through proper documentation. We did some client surveys, organization surveys, and observed work patterns of a group of human resources for a period. We measured some of the parameters before and after the implementation of 3D model. We found that implementation of 3D model gives an improved process and product development environment with no extra manpower or extra costing. At this moment, we are carrying out a 12 Lakh taka funded research, funded by United International University to better evaluate this process and its effectiveness to improve the software development performance of software industries.

Research and Publication

I have a number of journal and international conference pulications on Education, Health, Software Engineering, Plasmonics and Nanoparticles, computer networking and many others.

Key Resource person for LMS and OBE

I also work as a trainer, consultant, key resource person for the implementation of Digitization in Learning and Learning Management system. I also serve as an expert in the implementation of Outcome Based Education in the Engineering departments of various universities.

Before joining UIU, he had been serving as an Associate Professor in the same Department of Brac University (BracU). He had also served as an Assistant Professor in the Dept. of Computer Science under the Faculty of Computer and Information Systems at Islamic University of Madinah (IUM), Saudi Arabia. Before travelling to IUM, he had been working as an Assistant Professor in Computer Science and Engineering Department of Islamic University of Technology (IUT), OIC, Gazipur, Bangladesh. He has been awarded PhD in Computer Engineering from Kyung Hee University, South Korea in the field of Smart Internet of Things (IoT) in 2013. Dr. Motahar had also served as the Chief Technical Officer of BERNET (Currently BdREN) of University Grants Commission of Bangladesh (UGC). As the community service, he has been working as an Associate Editor of International Journal of Computers and Applications, Taylor & Francis Group, UK since 2017. He has published around 70 research articles in the reputed international journals and conferences. His research interest includes Smart IoT, NB-IoT, IP-WSN, Cloud Computing, Network Virtualization, Edge Intelligence, Machine Learning etc. For the last four years, Dr. Motahar had been actively engaged in outcome based education (OBE) for ABET and BAETE. He led the OBE Committee, Curriculum Committee and supervised the Cloud Computing Research Lab at BracU. He also served as the adviser of IEEE CS students chapter at BracU.