Uda Hashim, Prof. Ts. Dr.: Recent submissions

Now showing items 101-120 of 243

    • Design and fabrication of PDMS microchamber for fast reaction assays in biosensing application. 

      Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; A.Wesam, Al-Mufti (Trans Tech Publications, 2013)
      A simple design of a microchamber for use in reacting assays with limited sample availability has been proposed, analyzed using COMSOL 3.5 Multiphysics simulation and fabricated using soft-lithography technique. The design ...

    • The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel 

      Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; Md. Eaqub, Ali, Dr.; Leow, Pei Ling (American Scientific Publishers All rights reserved., 2013-01)
      Here we reported on fabrication of multi-layer microstructures that takes the advantage of electroosmosis to mix fluids. Microlaboratories for biochemical applications often require rapid mixing of different fluid streams. ...

    • Alternative-current electrochemical etching of uniform porous silicon for photodetector applications 

      Husnen R., Abd; Yarub, Al-Douri, Assoc. Prof. Dr.; Naser Mahmoud, Ahmed, Dr.; Uda, Hashim, Prof. Dr. (Electrochemical Science Group, 2013)
      The twining of alternative-current (AC) with electrochemical etching (ECE) to fabricate porous silicon (PS) is studied. The porosity percentage is obtained by gravimetric analysis. The effect of different current densities; ...

    • Design of 3D micromixer for bio-synthesis using COMSOL multiphysics software package 

      Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; Leow, Pei Ling, Dr.; Foo, Kai Loong (American Scientific Publishers, 2013-12)
      Moving parts of micrometer scale make the chips very expensive and fragile and are therefore to be avoided if at all possible. An alternative method for transporting fluid in the samples is through capillary effect, the ...

    • Effect of manganese content on the fabrication of porous anodic alumina 

      Voon, Chun Hong; Mohd Nazree, Derman, Dr.; Uda, Hashim, Prof. Dr. (Hindawi Publishing Corporation, 2012)
      The influence of manganese content on the formation of well-ordered porous anodic alumina was studied. Porous anodic alumina has been produced on aluminium substrate of different manganese content by single-step anodizing ...

    • Effect of different seed solutions on the morphology and electrooptical properties of ZnO Nanorods 

      Muhammad Kashif, Muhammad Faroow; Uda, Hashim, Prof. Dr.; Md. Eaqub, Ali, Dr.; Syed Muhammad, Usman Ali Shah, Dr.; Mohamad Rusop, Mahmood, Assoc Prof. Dr.; Zafar Hussain, Ibupoto; Willander, Magnus (Hindawi Publishing Corporation, 2012)
      The morphology and electrooptical properties of ZnO nanorods synthesized on monoethanolamine-based seed layer and KOHbased seed layer were compared. The seed solutions were prepared in monoethanolamine in 2-methoxyethanol ...

    • Isolation, characterization, and identification of biological control agent for potato soft rot in Bangladesh 

      Mohammad Mizanur Mustafizur, Rahman; Md Eaqub, Ali, Dr.; Adalat, Khan; Abdul Mannan, Akanda, Dr.; Md Kamal, Uddin; Uda, Hashim, Prof. Dr.; Sharifah Bee, Abd Hamid, Prof. Dr. (Hindawi Publishing Corporation, 2012)
      A total of 91 isolates of probable antagonistic bacteria of potato soft rot bacterium Erwinia carotovora subsp. carotovora (Ecc) were extracted from rhizospheres and endophytes of various crop plants, different soil ...

    • Study of frequency dependent electrical properties of ZnO nanorods 

      Muhammad Kashif, Muhammad Faroow; Uda, Hashim, Prof. Dr.; Syed Muhammad Usman, Ali Shah, Dr.; Zafar Hussain, Ibupoto; Willander, Magnus, Prof. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      Impedance spectroscopy is used to study the frequency dependent electrical parameters such as impedance, dielectric constant and conductivity of ZnO nanorods MSM structure in the range of 1 Hz to 10MHz under atmospheric ...

    • Structural, morphological and optical studies of CdS nanostructures 

      Abdulwahab, S. Z. Lahewil; Yarub Al-Douri, Dr.; Uda, Hashim, Prof. Dr.; Ahmed, N. M. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      Cadmium sulfide (CdS) thin films of nanostructure were prepared with Cd:S (1.2 to 0.05 mol/L) and different spin coating speed (1000 and 5000 rpm) using sol-gel spin coating technique. Structural, morphological and ...

    • A review of microfluidic sensing system for medical application 

      Hidayah, Hadi; Yufridin, Wahab, Dr.; Razaidi, Hussin; Uda Hashim, Prof. Dr.; Huzein Fahmi, Hawari; Latty Shazana, Ismail (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      In this paper, we present about the preview paper of Microfluidic sensing system and simulation using COMSOL Multiphysics. Based on the basic Microfluidic system, pervious paper and work can help us to more understand and ...

    • Development of interdigitated electrode molecular imprinted polymer sensor for monitoring alpha pinene emissions from mango fruit 

      Huzein Fahmi, Hawari; Nurul Maisyarah, Samsudin; Ali Yeon, Md Shakaff, Prof. Dr.; Supri, A. Ghani, Dr.; Mohd Noor, Ahmad, Prof. Dr.; Yufridin, Wahab, Dr.; Uda, Hashim, Prof. Dr. (Malaysian Technical Universities Network (MTUN), 2012-11-20)
      Alpha Pinene is a type of terpene hydrocarbons commonly emitted in substantial amounts by plants such as mango. Using Interdigitated Electrode (IDE) structure, a sensor for detecting Alpha Pinene volatile by using molecular ...

    • Recognition of Limonene volatile using Interdigitated Electrode molecular imprinted polymer sensor 

      Huzein Fahmi, Hawari; Nurul Maisyarah, Samsudin; Mohd Noor, Ahmad, Prof. Dr.; Ali Yeon, Md Shakaff, Prof. Dr.; Supri., A. Ghani, Prof. Madya Dr.; Yufridin, Wahab, Dr.; Uda, Hashim, Prof. Dr. (Institute of Electrical and Electronic Engineers (IEEE), 2012-02-08)
      Limonene is a type of terpene hydrocarbons commonly produced by plants and known to possess a strong smell of oranges. Electronic nose (e-nose) is an artificial olfaction device that is able to replicate the human ...

    • Resist uniformity evaluation through swing curve phenomena 

      Uda, Hashim, Prof. Dr.; Tijjani Adam, Shuwa (INSInet Publications, 2012)
      In fabrication of Micro/ Nano structure, alignment and exposure are the most critical steps in photolithography process, the resolution requirements and precise alignment are vital; each mask needs to be precisely aligned ...

    • Low cost fabrication of micromixer and microchamber for microfluidic lab-on-chip 

      Uda, Hashim, Prof. Dr.; Tijjani Adam, Shuwa; M. Wesam, Al-Mufti; Ling, Peter Jie Lung; Shahrul Aizzam, Ariffin (Institute of Electrical and Electronic Engineers (IEEE), 2012)
      Microfluidic technology has been given the contribution in biomedical and chemistry. The testing and diagnosis on bio-reagents has the efficiency increased through the implementation of microfluidic technology, such as lab ...

    • Computational micro fluid dynamics using COMSOL multiphysics for sample delivery in sensing domain 

      Uda, Hashim, Prof. Dr.; Tijjani Adam, Shuwa; Diyana, P. N. A.; Ten, Seng Teik (Institute of Electrical and Electronic Engineers (IEEE), 2012)
      Engineering of fluid flow with within various structure for different application is a scientific quest and Microfluidic devices present a powerful platform for working with living cells and other medical application. The ...

    • Subnanometer poly-silicon gap structure formation: Comparison study between size expansion and size reduction 

      Uda, Hashim, Prof. Dr.; Nazwa, Taib; Thikra, S. Dhahi (American Institute of Physics., 2012)
      This study describes the comparison among the three fabrication methods of an array of poly-silicon nanogap structures. The three different methods are size expansion technique (SET), size reduction technique (SRT) and ...

    • Silicon nanowire sensor by mix and match lithography process: Fabrication and characterization 

      Uda, Hashim, Prof. Dr. (American Institute of Physics, 2012-06-06)
      Silicon nanowires (SiNWs) have attracted significant interest in the study because of their potential to impact applications from nanoscale electronics to biomedical engineering. E-Beam Lithography couple with standard ...

    • A review on the label free nanowire based biosensor 

      Haarindra Prasad, s/o Rajintra Prasat; Uda, Hashim, Prof. Dr. (AENSI Publications, 2012)
      Advancement in nanotechnologies has encourage researchers to conduct studies related to nanowires formation. Studies regarding the types of nanowire based biosensors have been conducted and reported in this papers. Methods ...

    • Fabrication of polysilicon nanowires using trimming technique 

      Uda, Hashim, Prof. Dr.; Shahrul Aizzam, Ariffin; Tijjani Adam (AENSI Publications, 2012-04)
      Recently most researches are more to scaling down the electronic devices and this fact including component, structure and complexity of electronic devices. These matters also include fabrication of nanowires in certain ...

    • Structural, analysis and optical studies of cadmium sulfide nanostructured 

      Abdulwahab, S. Z. Lahewil; Yarub, Al-Douri, Assoc. Prof. Dr.; Uda, Hashim, Prof. Dr.; Naser Mahmoud, Ahmed, Dr. (Elsevier Ltd., 2013)
      Cadmium sulfide (CdS) thin films of nanostructure were prepared and deposited on glass substrates with Cd:S (1.2 to 0.05 mol/L) annealed at 400ºC and different spin coating speed (1000 and 5000 rpm) using sol-gel spin ...