Now showing items 116-135 of 206

    • Modular architecture of a non-contact pinch actuation micropump 

      Chee, Pei Song; Rashidah, Arsat. Dr.; Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; Ruzairi, Abdul Rahim, Prof. Dr.; Leow, Pei Ling (MDPI, Basel, Switzerland., 2012-09)
      This paper demonstrates a modular architecture of a non-contact actuation micropump setup. Rapid hot embossing prototyping was employed in micropump fabrication by using printed circuit board (PCB) as a mold material in ...
    • Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method 

      Mohammad, Kashif; Syed Muhammad, Usman Ali; Mohamed A, Mohd Ali; Abdulgafour, H. I.; Uda, Hashim, Prof. Dr.; Willander, Magnus; Zainuriah, Hassan (WILEY-VCH Verlag GmbH & Co., 2012-01)
      Two-dimensional (2D) ZnO nanoflakes were grown on thin aluminum layer, deposited on silicon substrate, using a sol-gel method. The surface morphologies of ZnO nanoflakes at different precursor concentrations were studied ...
    • Morphological, structural, and electrical characterization of sol-gel-synthesized ZnO nanorods 

      Muhammad Kashif, Muhammad Faroow; Uda, Hashim, Prof. Dr.; Md Eaqub, Ali, Dr.; Foo, Kai Loong; Syed Muhammad Usman, Ali Shah, Dr. (Hindawi Publishing Corporation, 2013)
      ZnO nanorods were grown on thermally oxidized p-type silicon substrate using sol-gel method. The SEM image revealed high-density, well-aligned, and perpendicular ZnO nanorods on the oxidized silicon substrate. The XRD ...
    • Morphological, structural, and gas-sensing characterization of tin-doped indium oxide nanoparticles 

      Ayeshamariam, A.; Muhammad, Kashif; Bououdina, M.; Uda, Hashim, Prof. Dr.; Jayachandran, M.; Md. Eaqub, Ali (Elsevier, 2014-01)
      Tin-doped indium oxide (ITO) nanoparticles with stable cubic phases were synthesized using a sol–gel combustion method that includes gelation and combustion in organic fuel. The influence of SnO₂ on the phase and morphology ...
    • Morphology and optical investigations of ZnO pyramids and nanoflakes for optoelectronic applications 

      N. K., Hassan; M. Roslan, Hashim; Yarub, Al - Douri (Elsevier, 2014-06)
      Zinc-oxide (ZnO) pyramidal and nanoflakes were grown by electrochemical deposition of Zn(NO3)2·6H2O on n-type Si substrate with different crystallographic orientations and on indium tin oxide (ITO)-coated glass. Various ...
    • Morphology, analysis and properties studies of CdS nanostructures under thiourea concentration effect for photovoltaic applications 

      Yarub, Al-Douri, Assoc. Prof. Dr.; Jamal H., Waheb; Mohammed Ameri; Khenata, R.; Abdelmadjid, Bouhemadou; Ali Hussain, Reshak, Prof. Dr. (Electrochemical Science Group, 2013-08)
      CdS nanostructures are prepared by sol-gel spin coating method using different thiourea concentrations. The thiourea concentration effect for CdS nanostructures deposited on quartz substrate is studied. The CdS nanostructures ...
    • Nanobioprobe for the determination of pork adulteration in burger formulations. 

      Md. Eaqub, Ali; Shuhaimi, Mustafa, Assoc. Prof Dr.; Uda, Hashim, Prof. Dr.; Yaakob, Che Man, Prof. Dr; Foo, Kai Loong (Hindawi Publishing Corporation, 2012)
      We report the development of a swine-specific hybrid nanobioprobe through a covalent integration of a fluorophore-labeled 27-nucleotide AluI-fragment of swine cytochrome b gene to a 3nm gold nanoparticle for the determination ...
    • Nanobiosensor for the detection and quantification of pork adulteration in meatball formulation 

      Md. Eaqub, Ali, Dr.; Uda, Hashim, Prof. Dr.; Shuhaimi, Mustafa; Yaakob, Che Man; Tijjani Adam, Shuwa; Qazi Muhammad, Humayun (Taylor & Francis, 2014)
      A 27-nucleotide AluI fragment of swine cytochrome b (cytb) gene was integrated to 3-nm diameter citrate–tannate-coated gold nanoparticles to fabricate a species-specific nanobiosensor. The biosensor was applied to authenticate ...
    • Nanoelectrode chrome photomask design and specification for biosensor fabrication 

      Balakrishnan, Sharma Rao; Uda, Hashim, Prof. Dr. (Trans Tech Publications, 2013)
      This paper explains the most crucial part of any microchip fabrication, which is the mask design for photolithography process. The design is initially sketched roughly to meet the design specification and later on designed ...
    • Nanoparticle sensor for label free detection of swine DNA in mixed biological samples 

      M. E., Ali; Uda, Hashim, Prof. Dr.; S., Mustafa; Y. B., Che Man; M. H. M., Yusop; Mohd Fazalul, Bari; Kh. N., Islam; M. F., Hasan (IOP Publishing Ltd., 2011-05-13)
      We used 40 5nm gold nanoparticles (GNPs) as colorimetric sensor to visually detect swine-specific conserved sequence and nucleotide mismatch in PCR-amplified and non-amplified mitochondrial DNA mixtures to authenticate ...
    • Negative Pattern Scheme (NPS) design for nanowire formation using scanning electron microscope based electron beam lithography technique 

      Mohammad Nuzaihan, Md Nor; Uda, Hashim, Prof. Dr.; Siti Fatimah, Abdul Rahman; Tijjani Adam, Shuwa (Trans Tech Publications, 2014)
      In this work, we report the used of Negative Pattern Scheme (NPS) by Electron Microscope Based Electron Beam Lithography (EBL) Technique in connection with scanning electron microscope (SEM) for creating extremely fine ...
    • New optical features to enhance solar cell performance based on porous silicon surfaces 

      A., Ramizy; Z., Hassan; K., Omar; Y., Al-Douri; M.A., Mahdi (Elsevier B.V., 2011-05)
      Electrochemical etching is used to fabricate porous silicon (PS) surfaces for both sides of the Si wafer. The effect of PS on performance of Si solar cells is investigated and the reflected mirrors are manipulated to enhance ...
    • A Novel AC technique for high quality porous GaN 

      Ainorkhilah, Mahmood; Naser Mahmoud, Ahmed, Dr.; Yuhamdan, Yusof; Yam, Fong Kwong, Dr.; Chuah, Lee Siang, Dr.; Husnen R., Abd; Zainuriah, Hassan (Electrochemical Science Group (ESG), 2013-04)
      In this paper, we report the formation of porous GaN films under a novel alternatingcurrent (sine-wave a.c. (50 Hz)) photo-assisted electrochemical etching (ACPEC) conditions. The ac formed porous GaN with excellent ...
    • Novel in-house fabrication of nano lab-on-chip devices 

      Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; Dhahi, Th Sabar; Leow, Pei Ling; Chee, Pei Song (Bentham Science Publishers, 2013)
      20nm SiNWs transducers have been fabricated by means of simple in-house fabrication method. A low cost, simple top-down approach has been successfully used for the fabrication of very sensitive SiNWs. The fabrication was ...
    • A novel method for the synthesis of calcium carbonate (aragonite) nanoparticles from cockle shells 

      Kh Nurul, Islam; Md Zuki, Abu Bakar, Prof. Dr.; Md. Eaqub, Ali, Dr.; Mohd Zobir, Hussein, Prof. Dr.; Noordin, Mohamed Mustapha, Prof. Dr.; Loqman, Mohamad Yusof, Dr.; Hanif, Wahid; Uda, Hashim, Prof. Dr.; Miah, Gous (Elsevier B.V., 2013-02)
      We report a simple, novel and low-cost method for the synthesis of aragonite nanoparticles from cockle shells. Aragonite is one of the least abundant biogenic polymorphs of calcium carbonate and is widely used as a biomaterial ...
    • Numerical simulation of microfluidic separators 

      Shahrul Aizzam, Ariffin; Uda, Hashim, Prof. Dr.; Tijjani Adam, Shuwa (Trans Tech Publications, 2013)
      Microfluidic devices present a powerful platform for working with living cells and even gases. Parameter such as the length and volume scales of these devices in miniaturize system makes it possible to develops and perform ...
    • Optical properties of GaN nanostructures for optoelectronic applications 

      Yarub, Al-Douri, Assoc. Prof. Dr. (Elsevier B.V., 2013)
      Electrochemical deposition method is used to prepare GaN nanostructure. The morphological studies using scanning electron microscopy (SEM), photoluminescence (PL) the refractive index and optical dielectric constant are ...
    • Optical properties of Si quantum dot potential under pressure effect 

      Yarub, Al - Douri (Trans Tech Publications, Switzerland., 2012)
      Further study of the quantum dot potential under hydrostatic pressure for Si is presented. This potential has been calculated by means of our recent empirical model. The indirect energy gap (Γ-X) is calculated using the ...
    • Optoelectronic properties of GaAs and AlAs under temperature effect 

      Yarub, Al-Douri, Assoc. Prof. Dr.; Ali Hussain, Reshak, Prof. Dr.; Uda, Hashim, Prof. Dr. (Elsevier GmbH, 2013-08)
      An application study of optoelectronic properties as a function of the temperature for GaAs and AlAs according to our model has been presented using empirical pseudopotential method (EPM). The structural phase transition ...
    • Parametric study and thickness evaluation of photoresist development for the formation of microgap electrodes using surface nanoprofiler 

      Qazi Muhammad, Humayun; Uda, Hashim, Prof. Dr. (Scientific.Net, 2012-12)
      A compact nanolaboratory on single chip is one of the challenging tasks for future reproductively of sensitive and selective lab-on-chip. This paper reports a simple and controllable technique for patterning microgap ...